[afnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 28 18:03:41 UTC 2023


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
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 29 Apr, 2023

  BGP Table (Global) as seen in Japan.

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

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

BGP routing table entries examined:                              920274
    Prefixes after maximum aggregation (per Origin AS):          349049
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      449049
Total ASes present in the Internet Routing Table:                 74365
    Prefixes per ASN:                                             12.38
Origin-only ASes present in the Internet Routing Table:           63787
Origin ASes announcing only one prefix:                           26221
Transit ASes present in the Internet Routing Table:               10578
Transit-only ASes present in the Internet Routing Table:            435
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1078
    Number of instances of unregistered ASNs:                      1078
Number of 32-bit ASNs allocated by the RIRs:                      41758
Number of 32-bit ASNs visible in the Routing Table:               34510
Prefixes from 32-bit ASNs in the Routing Table:                  170749
Number of bogon 32-bit ASNs visible in the Routing Table:            13
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            635
Number of addresses announced to Internet:                   3060323968
    Equivalent to 182 /8s, 104 /16s and 214 /24s
    Percentage of available address space announced:               82.7
    Percentage of allocated address space announced:               82.7
    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:      307168

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

Prefixes being announced by APNIC Region ASes:                   243681
    Total APNIC prefixes after maximum aggregation:               69357
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          237917
    Unique aggregates announced from the APNIC address blocks:    97908
APNIC Region origin ASes present in the Internet Routing Table:   13396
    APNIC Prefixes per ASN:                                       17.76
APNIC Region origin ASes announcing only one prefix:               3929
APNIC Region transit ASes present in the Internet Routing Table:   1802
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8699
Number of APNIC addresses announced to Internet:              773438208
    Equivalent to 46 /8s, 25 /16s and 187 /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, 131072-151865
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:                    269219
    Total ARIN prefixes after maximum aggregation:               122319
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           271854
    Unique aggregates announced from the ARIN address blocks:    131001
ARIN Region origin ASes present in the Internet Routing Table:    19089
    ARIN Prefixes per ASN:                                        14.24
ARIN Region origin ASes announcing only one prefix:                6963
ARIN Region transit ASes present in the Internet Routing Table:    1964
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4790
Number of ARIN addresses announced to Internet:              1283916288
    Equivalent to 76 /8s, 135 /16s and 2 /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, 393216-401308
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,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  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:                    259353
    Total RIPE prefixes after maximum aggregation:               122220
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           255356
    Unique aggregates announced from the RIPE address blocks:    158069
RIPE Region origin ASes present in the Internet Routing Table:    28321
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12059
RIPE Region transit ASes present in the Internet Routing Table:    3972
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11156
Number of RIPE addresses announced to Internet:               717996416
    Equivalent to 42 /8s, 203 /16s and 193 /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
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        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:                  117852
    Total LACNIC prefixes after maximum aggregation:              28563
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         117112
    Unique aggregates announced from the LACNIC address blocks:   49293
LACNIC Region origin ASes present in the Internet Routing Table:  10991
    LACNIC Prefixes per ASN:                                      10.66
LACNIC Region origin ASes announcing only one prefix:              2654
LACNIC Region transit ASes present in the Internet Routing Table:  2306
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8779
Number of LACNIC addresses announced to Internet:             176720384
    Equivalent to 10 /8s, 136 /16s and 138 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                  29091
    Total AfriNIC prefixes after maximum aggregation:              5811
    AfriNIC Deaggregation factor:                                  5.01
Prefixes being announced from the AfriNIC address blocks:         37400
    Unique aggregates announced from the AfriNIC address blocks:  12252
AfriNIC Region origin ASes present in the Internet Routing Table:  1739
    AfriNIC Prefixes per ASN:                                     21.51
AfriNIC Region origin ASes announcing only one prefix:              616
AfriNIC Region transit ASes present in the Internet Routing Table:  333
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1086
Number of AfriNIC addresses announced to Internet:            107835136
    Equivalent to 6 /8s, 109 /16s and 111 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 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        9483       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5730        787     693  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863       4192      75  ERX-CERNET-BKB China Education and Rese
 45899        4054       1877      47  VNPT-AS-VN VNPT Corp, VN
  7713        3547       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
  7552        3227       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        2942        489     234  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2537      11251     591  KIXS-AS-KR Korea Telecom, KR
 24560        2386        837     442  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2184       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        8232      10772    2936  AMAZON-02, US
 11492        4545        301     593  CABLEONE, US
  7155        3975        281      51  VIASAT-SP-BACKBONE, US
 22773        3588       3057     284  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3523       1320      64  SHAW, CA
 16625        3171       1584    2361  AKAMAI-AS, US
   749        3071      53111    2323  DNIC-AS-00749, US
396982        2635       3590     366  GOOGLE-CLOUD-PLATFORM, US
  7018        2516      24151    1575  ATT-INTERNET4, US
 30036        2501        361     449  MEDIACOM-ENTERPRISE-BUSINESS, 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        7270       1706     140  UNI2-AS, ES
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 20940        4080       3399     164  AKAMAI-ASN1, NL
  8551        3889        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2951       2292     909  ROSTELECOM-AS, RU
  9009        2668        249    1400  M247, RO
 34984        2276        359     613  TELLCOM-AS, TR
  6849        2018        307      18  UKRTELNET, UA
 58224        1852        950     544  TCI, IR
 13188        1607        100      18  TRIOLAN, UA

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       11251       3343     591  Uninet S.A. de C.V., MX
 10620        3479        505     906  Telmex Colombia S.A., CO
 13999        2334        358     617  Mega Cable, S.A. de C.V., MX
 11830        2263        369      64  Instituto Costarricense de Electricidad
 28573        1333       2324     240  Claro NXT Telecomunicacoes Ltda, BR
  6503        1299        339     514  Axtel, S.A.B. de C.V., MX
  3816        1293        760     170  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1132        370      22  Telefonica del Peru S.A.A., PE
 11664        1099        180     444  Techtel LMDS Comunicaciones Interactiva
 26615        1035       2498      45  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
 24863        1585        393      19  LINKdotNET-AS, EG
 24835        1553        533      30  RAYA-AS, EG
 36992        1338       1518     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1024         67      46  ORANGE-COTE-IVOIRE, CI
 36935         875        520      42  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         529         54      48  WANANCHI-, KE
 37342         491         32       1  MOVITEL, MZ
 24757         489         73       5  EthioNet-AS, ET

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
  8151       11251       3343     591  Uninet S.A. de C.V., MX
  9808        9483       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8232      10772    2936  AMAZON-02, US
 12479        7270       1706     140  UNI2-AS, ES
  7545        5730        787     693  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 11492        4545        301     593  CABLEONE, US
 20940        4080       3399     164  AKAMAI-ASN1, NL
 45899        4054       1877      47  VNPT-AS-VN VNPT Corp, VN

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

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

   ASN  No of nets  Net Savings  Description
  9808        9483         9443  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7270         7130  UNI2-AS, ES
 16509        8232         5296  AMAZON-02, US
  7545        5730         5037  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863         4788  ERX-CERNET-BKB China Education and Research Net
 39891        4833         4774  ALJAWWALSTC-AS, SA
 45899        4054         4007  VNPT-AS-VN VNPT Corp, VN
 11492        4545         3952  CABLEONE, US
  7155        3975         3924  VIASAT-SP-BACKBONE, US
 20940        4080         3916  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
      3507  UNALLOCATED  5.105.166.0/24          213035  AS-SERVERION Serverion B.V.,
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
    396894  UNALLOCATED  8.28.201.0/24            46887  LIGHTOWER, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.139.232.0/24      Origin:    211619  MAXKO, HR
23.139.232.0/24     Transit:     42864  GIGANET-HU GigaNet Internet Service Prov

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       /9:14      /10:39      /11:103     /12:298     
/13:578     /14:1195    /15:2046    /16:13453   /17:8234    /18:14280   
/19:25215   /20:44283   /21:51252   /22:109692  /23:97666   /24:551168  
/25:742     /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        6330        7270  UNI2-AS, ES
  8151        5196       11251  Uninet S.A. de C.V., MX
 39891        3632        4833  ALJAWWALSTC-AS, SA
 11492        3454        4545  CABLEONE, US
  8551        3361        3889  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3332        3523  SHAW, CA
  7155        3042        3975  VIASAT-SP-BACKBONE, US
 22773        2652        3588  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2158        2501  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2034        3479  Telmex Colombia S.A., CO

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

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

   1:1821      2:1290      3:175       4:5         5:4516      6:128    
   7:6         8:1548      9:1        11:172      12:1535     13:380    
  14:2340     15:299      16:182      17:371      18:417      20:256    
  21:4        22:188      23:6246     24:2594     25:6        27:2459   
  29:19       31:2493     32:81       34:12       35:109      36:1939   
  37:4658     38:4467     39:822      40:151      41:3932     42:1231   
  43:2345     44:307      45:16532    46:4291     47:363      49:1758   
  50:1844     51:573      52:1592     54:390      55:858      56:8      
  57:112      58:1780     59:1152     60:990      61:2453     62:2663   
  63:1925     64:5669     65:2331     66:4995     67:3007     68:1352   
  69:4130     70:1235     71:671      72:2983     74:2612     75:1447   
  76:615      77:2441     78:1815     79:3173     80:2109     81:1762   
  82:1488     83:1278     84:1531     85:2985     86:764      87:2011   
  88:1169     89:3668     90:613      91:7740     92:2064     93:2627   
  94:3604     95:3999     96:1321     97:335      98:1153     99:746    
 100:73      101:1077    102:2629    103:31289   104:4628    105:488    
 106:948     107:2524    108:1030    109:4421    110:2090    111:3137   
 112:2036    113:1645    114:1651    115:2016    116:1923    117:2534   
 118:2381    119:2017    120:1794    121:1112    122:2593    123:2216   
 124:1614    125:2500    128:1377    129:1064    130:1020    131:1996   
 132:814     133:422     134:1904    135:303     136:878     137:944    
 138:2556    139:1574    140:1250    141:1464    142:1443    143:1501   
 144:1164    145:348     146:1942    147:1574    148:2353    149:2208   
 150:876     151:1158    152:1817    153:490     154:4443    155:1436   
 156:1784    157:1305    158:1064    159:2306    160:2544    161:1531   
 162:3516    163:1522    164:1617    165:1715    166:1040    167:1725   
 168:3857    169:943     170:4585    171:874     172:3547    173:2937   
 174:1072    175:1177    176:3693    177:4599    178:3592    179:2152   
 180:2573    181:3434    182:3380    183:1975    184:2371    185:20183  
 186:4747    187:3967    188:4109    189:3562    190:9155    191:1438   
 192:10947   193:8876    194:7336    195:5161    196:3063    197:2356   
 198:5944    199:6103    200:8039    201:5875    202:10671   203:10238  
 204:4587    205:3672    206:4354    207:3458    208:4072    209:4860   
 210:4427    211:2498    212:4137    213:3586    214:1090    215:59     
 216:6636    217:2682    218:1294    219:577     220:2015    221:972    
 222:890     223:2185   

End of report



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