[afnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri May 30 18:02:16 UTC 2025


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
UKNOF, TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 31 May, 2025

  IPv4 BGP Table (Global) as seen at Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              985921
    Prefixes after maximum aggregation (per Origin AS):          380656
    Deaggregation factor:                                          2.59
    Unique aggregates announced (without unneeded subnets):      482972
    Number of IPv4 prefixes with a valid ROA:                    543024
    Number of IPv4 prefixes with an invalid ROA:                   1315
    Number of IPv4 prefixes with no ROA:                         441582
Total ASes present in the Internet Routing Table:                 76950
    Prefixes per ASN:                                             12.81
Origin-only ASes present in the Internet Routing Table:           65862
Origin ASes announcing only one prefix:                           26966
Transit ASes present in the Internet Routing Table:               11088
Transit-only ASes present in the Internet Routing Table:            557
Average AS path length visible in the Internet Routing Table:       5.2
    Max AS path length visible:                                     152
    Max AS path prepend of ASN (150261)                             150
Prefixes from unregistered ASNs in the Routing Table:              1016
    Number of instances of unregistered ASNs:                      1029
Number of 32-bit ASNs allocated by the RIRs:                      46546
Number of 32-bit ASNs visible in the Routing Table:               38337
Prefixes from 32-bit ASNs in the Routing Table:                  204194
Number of bogon 32-bit ASNs visible in the Routing Table:            46
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            443
Number of addresses announced to Internet:                   3111182720
    Equivalent to 185 /8s, 112 /16s and 225 /24s
    Percentage of available address space announced:               84.0
    Percentage of allocated address space announced:               84.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      322389

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   259242
    Total APNIC prefixes after maximum aggregation:               77989
    APNIC Deaggregation factor:                                    3.32
Prefixes being announced from the APNIC address blocks:          250277
    Unique aggregates announced from the APNIC address blocks:   104342
APNIC Region origin ASes present in the Internet Routing Table:   14645
    APNIC Prefixes per ASN:                                       17.09
APNIC Region origin ASes announcing only one prefix:               4455
APNIC Region transit ASes present in the Internet Routing Table:   1955
Average APNIC Region AS path length visible:                        5.4
    Max APNIC Region AS path length visible:                        152
Number of APNIC region 32-bit ASNs visible in the Routing Table:  10140
Number of APNIC addresses announced to Internet:              749584384
    Equivalent to 44 /8s, 173 /16s and 192 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-155961
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    291365
    Total ARIN prefixes after maximum aggregation:               131338
    ARIN Deaggregation factor:                                     2.22
Prefixes being announced from the ARIN address blocks:           291962
    Unique aggregates announced from the ARIN address blocks:    139565
ARIN Region origin ASes present in the Internet Routing Table:    19248
    ARIN Prefixes per ASN:                                        15.17
ARIN Region origin ASes announcing only one prefix:                7042
ARIN Region transit ASes present in the Internet Routing Table:    1999
Average ARIN Region AS path length visible:                         4.6
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    5227
Number of ARIN addresses announced to Internet:              1352670464
    Equivalent to 80 /8s, 160 /16s and 29 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-402332
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  45/8,  47/8,  48/8,  50/8,  52/8,
                        54/8,  55/8,  56/8,  63/8,  64/8,  65/8,  66/8,
                        67/8,  68/8,  69/8,  70/8,  71/8,  72/8,  73/8,
                        74/8,  75/8,  76/8,  96/8,  97/8,  98/8,  99/8,
                       100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8,
                       131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8,
                       139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8,
                       148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8,
                       159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8,
                       167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8,
                       184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8,
                       207/8, 208/8, 209/8, 214/8, 215/8, 216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    274531
    Total RIPE prefixes after maximum aggregation:               134444
    RIPE Deaggregation factor:                                     2.04
Prefixes being announced from the RIPE address blocks:           272807
    Unique aggregates announced from the RIPE address blocks:    175202
RIPE Region origin ASes present in the Internet Routing Table:    28956
    RIPE Prefixes per ASN:                                         9.42
RIPE Region origin ASes announcing only one prefix:               12096
RIPE Region transit ASes present in the Internet Routing Table:    4017
Average RIPE Region AS path length visible:                         5.3
    Max RIPE Region AS path length visible:                          69
Number of RIPE region 32-bit ASNs visible in the Routing Table:   12469
Number of RIPE addresses announced to Internet:               731677312
    Equivalent to 43 /8s, 156 /16s and 130 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-216475
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        53/8,  57/8,  62/8,  77/8,  78/8,  79/8,  80/8,
                        81/8,  82/8,  83/8,  84/8,  85/8,  86/8,  87/8,
                        88/8,  89/8,  90/8,  91/8,  92/8,  93/8,  94/8,
                        95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8,
                       185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8,
                       217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  124239
    Total LACNIC prefixes after maximum aggregation:              29552
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:         120623
    Unique aggregates announced from the LACNIC address blocks:   48961
LACNIC Region origin ASes present in the Internet Routing Table:  11264
    LACNIC Prefixes per ASN:                                      10.71
LACNIC Region origin ASes announcing only one prefix:              2682
LACNIC Region transit ASes present in the Internet Routing Table:  2540
Average LACNIC Region AS path length visible:                       5.9
    Max LACNIC Region AS path length visible:                        75
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  9223
Number of LACNIC addresses announced to Internet:             171972608
    Equivalent to 10 /8s, 64 /16s and 24 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-274844 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  35528
    Total AfriNIC prefixes after maximum aggregation:              6700
    AfriNIC Deaggregation factor:                                  5.30
Prefixes being announced from the AfriNIC address blocks:         49809
    Unique aggregates announced from the AfriNIC address blocks:  14496
AfriNIC Region origin ASes present in the Internet Routing Table:  1914
    AfriNIC Prefixes per ASN:                                     26.02
AfriNIC Region origin ASes announcing only one prefix:              691
AfriNIC Region transit ASes present in the Internet Routing Table:  377
Average AfriNIC Region AS path length visible:                      5.9
    Max AfriNIC Region AS path length visible:                       80
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1278
Number of AfriNIC addresses announced to Internet:            105083392
    Equivalent to 6 /8s, 67 /16s and 114 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 154/8, 196/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808       11131       8757     102  CHINAMOBILE-CN China Mobile Communication
  7545        6177        844     649  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4778       4192      76  ERX-CERNET-BKB China Education and Resear
  9498        4390        534     305  BBIL-AP BHARTI Airtel Ltd., IN
  7552        3921       1332      26  VIETEL-AS-AP Viettel Group, VN
  7713        3696       1044      66  TELKOMNET-AS-AP PT Telekomunikasi Indones
 45899        3287       1869     103  VNPT-AS-VN VNPT Corp, VN
 24560        2879        854     531  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd.,
  4766        2371      11522     627  KIXS-AS-KR Korea Telecom, KR
 45090        2208       1439      86  TENCENT-NET-AP Shenzhen Tencent Computer 

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509       13569      40828    5196  AMAZON-02, US
 11492        4735        314     586  CABLEONE, US
  7155        3864        286      85  VIASAT-SP-BACKBONE, US
  6327        3631       1320      81  SHAW, CA
   174        3365       8746     890  COGENT-174, US
 22773        3348       3033     170  ASN-CXA-ALL-CCI-22773-RDC, US
   749        3230      54783    2481  DNIC-AS-00749, US
396982        3175       3853     420  GOOGLE-CLOUD-PLATFORM, US
 16625        3022       1258    2229  AKAMAI-AS, US
 36352        2817        230     853  AS-COLOCROSSING, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        7720       1714     148  UNI2-AS, ES
 39891        4798        293      63  ALJAWWALSTC-AS, SA
 20940        3963       3395     127  AKAMAI-ASN1, NL
  9009        3898        356    2071  M247, RO
 12389        3082       2306     890  ROSTELECOM-AS PJSC Rostelecom. Technical 
 34984        2391        360     580  TELLCOM-AS, TR
212238        2221        161    1635  CDNEXT, GB
  8452        1611       1852      14  TE-AS TE-AS, EG
 13188        1606        100      34  TRIOLAN, UA
 62240        1425         95     740  CLOUVIDER Clouvider - Global ASN, GB

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       12169       3253     582  UNINET, MX
 10620        3499        480    1017  Telmex Colombia S.A., CO
 13999        2512        540     362  Mega Cable, S.A. de C.V., MX
 11830        1990        369      64  Instituto Costarricense de Electricidad y
 28573        1361       2438     262  Claro NXT Telecomunicacoes Ltda, BR
  3816        1338        785     210  COLOMBIA TELECOMUNICACIONES S.A. ESP BIC,
  6147        1198        371      22  Telefonica del Peru S.A.A., PE
 11664        1190        278      33  Techtel LMDS Comunicaciones Interactivas 
 22884        1060         67     377  TOTAL PLAY TELECOMUNICACIONES SA DE CV, M
 26615        1035       2503      52  TIM SA, BR

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24835        1780        644      27  RAYA-AS, EG
 24863        1652        389      16  LINKdotNET-AS, EG
 29571        1610        102      33  ORANGE-COTE-IVOIRE, CI
 36992        1431       1519     280  ETISALAT-MISR, EG
 36903        1250        554      97  MT-MPLS, MA
 37069        1107       1100      18  MOBINIL, EG
 36935        1054        523      47  Vodafone-, EG
 20011         980        185     285  INTERNET-SOLUTIONS, ZA
 36914         558         82       3  KENET-AS, KE
 15399         541         57      59  WANANCHI-, KE

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509       13569      40828    5196  AMAZON-02, US
  8151       12169       3253     582  UNINET, MX
  9808       11131       8757     102  CHINAMOBILE-CN China Mobile Communication
 12479        7720       1714     148  UNI2-AS, ES
  7545        6177        844     649  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4798        293      63  ALJAWWALSTC-AS, SA
  4538        4778       4192      76  ERX-CERNET-BKB China Education and Resear
 11492        4735        314     586  CABLEONE, US
  9498        4390        534     305  BBIL-AP BHARTI Airtel Ltd., IN
 20940        3963       3395     127  AKAMAI-ASN1, NL

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  8151       12169        11587  UNINET, MX
  9808       11131        11029  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7720         7572  UNI2-AS, ES
  7545        6177         5528  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4798         4735  ALJAWWALSTC-AS, SA
  4538        4778         4702  ERX-CERNET-BKB China Education and Research Net
 11492        4735         4149  CABLEONE, US
  9498        4390         4085  BBIL-AP BHARTI Airtel Ltd., IN
  7552        3921         3895  VIETEL-AS-AP Viettel Group, VN
 20940        3963         3836  AKAMAI-ASN1, NL

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     22542  UNALLOCATED  8.7.205.0/24              3356  LEVEL3, US
     33123  UNALLOCATED  8.10.69.0/24               174  COGENT-174, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-D
     46639  UNALLOCATED  8.17.66.0/24               701  UUNET, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
    393266  UNALLOCATED  8.23.52.0/24             46887  CROWNCASTLE-AS46887, US
    396894  UNALLOCATED  8.28.201.0/24            46887  CROWNCASTLE-AS46887, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             3356  LEVEL3, US
     46639  UNALLOCATED  8.38.73.0/24              3356  LEVEL3, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
14.192.20.0/22       Origin:     26658  HENGTONG-IDC-LLC, US
14.192.20.0/22      Transit:      6939  HURRICANE, US
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  RESERVED, ZZ
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.147.240.0/24      Origin:     32302  RESERVED, ZZ
23.147.240.0/24     Transit:     32787  PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE
23.152.48.0/24       Origin:     46167  RESERVED, ZZ
23.152.48.0/24      Transit:      7018  ATT-INTERNET4, US

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:16      /10:41      /11:92      /12:299     
/13:581     /14:1212    /15:2144    /16:13918   /17:8330    /18:13775   
/19:24844   /20:44780   /21:52151   /22:112309  /23:102364  /24:608251  
/25:798     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 12479        6635        7720  UNI2-AS, ES
  8151        6362       12169  UNINET, MX
 11492        3532        4735  CABLEONE, US
 39891        3489        4798  ALJAWWALSTC-AS, SA
  6327        3426        3631  SHAW, CA
  7155        2823        3864  VIASAT-SP-BACKBONE, US
 22773        2496        3348  ASN-CXA-ALL-CCI-22773-RDC, US
 16509        2389       13569  AMAZON-02, US
 30036        2237        2578  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2186        3499  Telmex Colombia S.A., CO

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1716      2:1504      3:797       4:9         5:4659      6:162    
   7:6         8:1599      9:1        11:172      12:1361     13:429    
  14:2559     15:358      16:285      17:377      18:918      20:542    
  21:4        22:188      23:7548     24:2750     25:2        27:2707   
  29:19       31:3283     32:39       33:1        34:83       35:214    
  36:3032     37:4632     38:9194     39:910      40:170      41:4225   
  42:955      43:2578     44:378      45:18590    46:5081     47:320    
  49:1938     50:1886     51:592      52:1568     54:321      55:1098   
  56:11       57:265      58:2146     59:1370     60:1168     61:2805   
  62:2931     63:1805     64:5445     65:2175     66:4628     67:3045   
  68:1129     69:3853     70:1078     71:631      72:2844     74:2784   
  75:1508     76:621      77:2700     78:1892     79:1692     80:2220   
  81:2063     82:3099     83:1453     84:1865     85:3428     86:1067   
  87:2383     88:1290     89:4398     90:776      91:8376     92:2714   
  93:2911     94:4061     95:4335     96:1418     97:316      98:978    
  99:689     100:72      101:1221    102:3862    103:32235   104:5056   
 105:764     106:1036    107:2650    108:1258    109:4059    110:2247   
 111:3342    112:2117    113:1532    114:1978    115:2119    116:2052   
 117:2535    118:2368    119:1934    120:1988    121:1432    122:2777   
 123:2181    124:1632    125:2889    126:91      128:1598    129:968    
 130:1316    131:1978    132:785     133:449     134:1535    135:333    
 136:1350    137:1176    138:2885    139:1583    140:1606    141:1505   
 142:1907    143:1788    144:1150    145:509     146:2191    147:2109   
 148:2702    149:2888    150:1245    151:1938    152:2090    153:503    
 154:8008    155:1986    156:3302    157:1907    158:1329    159:2482   
 160:3821    161:1844    162:3774    163:2180    164:1720    165:2221   
 166:1494    167:1927    168:4320    169:794     170:5082    171:1010   
 172:4432    173:3307    174:916     175:1294    176:3700    177:4715   
 178:3647    179:2315    180:2630    181:4088    182:3442    183:1855   
 184:2069    185:21589   186:5148    187:4502    188:4235    189:4288   
 190:9555    191:1471    192:11307   193:9467    194:7794    195:5550   
 196:3264    197:3661    198:6207    199:8534    200:8217    201:6342   
 202:10459   203:10572   204:4567    205:3636    206:4508    207:3579   
 208:4230    209:5174    210:4840    211:2638    212:4571    213:3734   
 214:1029    215:48      216:6735    217:3118    218:1406    219:545    
 220:2092    221:1105    222:855     223:2428   

End of report



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