[afnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 19 18:02:18 UTC 2024


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 20 Apr, 2024

  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:                              944392
    Prefixes after maximum aggregation (per Origin AS):          360904
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      460300
Total ASes present in the Internet Routing Table:                 75677
    Prefixes per ASN:                                             12.48
Origin-only ASes present in the Internet Routing Table:           64892
Origin ASes announcing only one prefix:                           26586
Transit ASes present in the Internet Routing Table:               10785
Transit-only ASes present in the Internet Routing Table:            517
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                     121
    Max AS path prepend of ASN (150315)                             116
Prefixes from unregistered ASNs in the Routing Table:              1044
    Number of instances of unregistered ASNs:                      1046
Number of 32-bit ASNs allocated by the RIRs:                      44204
Number of 32-bit ASNs visible in the Routing Table:               36243
Prefixes from 32-bit ASNs in the Routing Table:                  185454
Number of bogon 32-bit ASNs visible in the Routing Table:            16
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            589
Number of addresses announced to Internet:                   3028224640
    Equivalent to 180 /8s, 127 /16s and 10 /24s
    Percentage of available address space announced:               81.8
    Percentage of allocated address space announced:               81.8
    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:      311370

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

Prefixes being announced by APNIC Region ASes:                   250540
    Total APNIC prefixes after maximum aggregation:               73742
    APNIC Deaggregation factor:                                    3.40
Prefixes being announced from the APNIC address blocks:          242704
    Unique aggregates announced from the APNIC address blocks:   100466
APNIC Region origin ASes present in the Internet Routing Table:   14096
    APNIC Prefixes per ASN:                                       17.22
APNIC Region origin ASes announcing only one prefix:               4271
APNIC Region transit ASes present in the Internet Routing Table:   1872
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                        121
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9479
Number of APNIC addresses announced to Internet:              761931136
    Equivalent to 45 /8s, 106 /16s and 37 /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, 131072-153913
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:                    275322
    Total ARIN prefixes after maximum aggregation:               124663
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           280196
    Unique aggregates announced from the ARIN address blocks:    133382
ARIN Region origin ASes present in the Internet Routing Table:    19136
    ARIN Prefixes per ASN:                                        14.64
ARIN Region origin ASes announcing only one prefix:                6960
ARIN Region transit ASes present in the Internet Routing Table:    1985
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4877
Number of ARIN addresses announced to Internet:              1268923648
    Equivalent to 75 /8s, 162 /16s and 61 /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,  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:                    264976
    Total RIPE prefixes after maximum aggregation:               126706
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           259717
    Unique aggregates announced from the RIPE address blocks:    163430
RIPE Region origin ASes present in the Internet Routing Table:    28606
    RIPE Prefixes per ASN:                                         9.08
RIPE Region origin ASes announcing only one prefix:               12110
RIPE Region transit ASes present in the Internet Routing Table:    3975
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          31
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11737
Number of RIPE addresses announced to Internet:               714687488
    Equivalent to 42 /8s, 153 /16s and 68 /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,
                        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:                  121535
    Total LACNIC prefixes after maximum aggregation:              28949
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:         119765
    Unique aggregates announced from the LACNIC address blocks:   49448
LACNIC Region origin ASes present in the Internet Routing Table:  11081
    LACNIC Prefixes per ASN:                                      10.81
LACNIC Region origin ASes announcing only one prefix:              2599
LACNIC Region transit ASes present in the Internet Routing Table:  2396
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8956
Number of LACNIC addresses announced to Internet:             177085440
    Equivalent to 10 /8s, 142 /16s and 28 /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:                  30975
    Total AfriNIC prefixes after maximum aggregation:              6161
    AfriNIC Deaggregation factor:                                  5.03
Prefixes being announced from the AfriNIC address blocks:         41421
    Unique aggregates announced from the AfriNIC address blocks:  13111
AfriNIC Region origin ASes present in the Internet Routing Table:  1829
    AfriNIC Prefixes per ASN:                                     22.65
AfriNIC Region origin ASes announcing only one prefix:              646
AfriNIC Region transit ASes present in the Internet Routing Table:  357
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1194
Number of AfriNIC addresses announced to Internet:            105283840
    Equivalent to 6 /8s, 70 /16s and 129 /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        9882       8744      69  CHINAMOBILE-CN China Mobile Communicati
  7545        5665        778     678  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936       4192      76  ERX-CERNET-BKB China Education and Rese
  7552        3879       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3618       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3595        499     257  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3290       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2782        864     374  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2313      11524     584  KIXS-AS-KR Korea Telecom, KR
  4755        2199        434     196  TATACOMM-AS TATA Communications formerl

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        9846      11366    3476  AMAZON-02, US
 11492        4603        305     604  CABLEONE, US
  7155        4170        287      90  VIASAT-SP-BACKBONE, US
  6327        3609       1320      75  SHAW, CA
 22773        3512       3048     241  ASN-CXA-ALL-CCI-22773-RDC, US
   174        3319       6629     838  COGENT-174, US
   749        3202      54912    2454  DNIC-AS-00749, US
 16625        3112       1323    2216  AKAMAI-AS, US
   367        2828       3551    1347  DNIC-ASBLK-00306-00371, US
  7018        2767      23647    1772  ATT-INTERNET4, 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        7711       1709     144  UNI2-AS, ES
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 20940        3879       3396     128  AKAMAI-ASN1, NL
  9009        3284        285    1607  M247, RO
 12389        2976       2303     899  ROSTELECOM-AS, RU
  8551        2640        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2349        364     583  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
  8452        1549       1852      14  TE-AS TE-AS, EG
 44477        1536        100     727  STARK-INDUSTRIES, 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       12393       3319     483  UNINET, MX
 10620        3524        495     908  Telmex Colombia S.A., CO
 13999        2530        350     660  Mega Cable, S.A. de C.V., MX
 11830        2004        369      64  Instituto Costarricense de Electricidad
 28573        1340       2313     251  Claro NXT Telecomunicacoes Ltda, BR
  3816        1314        788     192  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1156        175     429  Techtel LMDS Comunicaciones Interactiva
  6503        1133        314     478  Axtel, S.A.B. de C.V., MX
  6147        1102        369      22  Telefonica del Peru S.A.A., PE
 22884        1068        114     390  TOTAL PLAY TELECOMUNICACIONES SA DE CV,

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        1549        545      28  RAYA-AS, EG
 24863        1501        389      20  LINKdotNET-AS, EG
 36992        1368       1519     282  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1206         76      63  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         557       1861      35  IAM-AS, MA
 15399         531         56      54  WANANCHI-, KE
 36914         483         82       3  KENET-AS, KE
 24757         436         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       12393       3319     483  UNINET, MX
  9808        9882       8744      69  CHINAMOBILE-CN China Mobile Communicati
 16509        9846      11366    3476  AMAZON-02, US
 12479        7711       1709     144  UNI2-AS, ES
  7545        5665        778     678  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936       4192      76  ERX-CERNET-BKB China Education and Rese
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 11492        4603        305     604  CABLEONE, US
  7155        4170        287      90  VIASAT-SP-BACKBONE, US
  7552        3879       1330      20  VIETEL-AS-AP Viettel Group, 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        9882         9813  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7711         7567  UNI2-AS, ES
 16509        9846         6370  AMAZON-02, US
  7545        5665         4987  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936         4860  ERX-CERNET-BKB China Education and Research Net
 39891        4758         4698  ALJAWWALSTC-AS, SA
  7155        4170         4080  VIASAT-SP-BACKBONE, US
 11492        4603         3999  CABLEONE, US
  7552        3879         3859  VIETEL-AS-AP Viettel Group, VN
 20940        3879         3751  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
     65536  DOCUMENT     5.102.30.0/24            65512  -Private Use AS-, ZZ
     33123  UNALLOCATED  8.10.69.0/24               174  COGENT-174, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     40493  UNALLOCATED  8.17.26.0/24              3356  LEVEL3, US
     46639  UNALLOCATED  8.17.66.0/24               701  UUNET, US
     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  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

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
23.140.216.0/24      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
23.175.120.0/24      Origin:    400967  ASSUREDNET-ASN1, US
23.175.120.0/24     Transit:     21700  NEPTUNE-NETWORKS, US
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US
27.0.192.0/22        Origin:    138415  YANCYLIMITED-AS-HK Yancy Limited, HK
27.0.192.0/22       Transit:     51847  NEAROUTE, HK

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      /10:37      /11:95      /12:298     
/13:583     /14:1195    /15:2068    /16:13285   /17:8263    /18:13701   
/19:24845   /20:43905   /21:51701   /22:111356  /23:98720   /24:573584  
/25:726     /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        6826        7711  UNI2-AS, ES
  8151        6425       12393  UNINET, MX
 11492        3516        4603  CABLEONE, US
 39891        3440        4758  ALJAWWALSTC-AS, SA
  6327        3406        3609  SHAW, CA
  7155        3114        4170  VIASAT-SP-BACKBONE, US
 22773        2601        3512  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2145        2490  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2137        3524  Telmex Colombia S.A., CO
  8551        2116        2640  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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

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

   1:1654      2:1502      3:324       4:6         5:4527      6:163    
   7:6         8:1513      9:1        11:172      12:1456     13:371    
  14:2399     15:317      16:209      17:369      18:765      20:361    
  21:4        22:188      23:6690     24:2711     25:2        27:2561   
  29:19       31:2698     32:48       34:60       35:131      36:2298   
  37:4471     38:7279     39:891      40:123      41:4093     42:984    
  43:2376     44:314      45:17061    46:4442     47:305      49:1948   
  50:1922     51:573      52:1584     54:311      55:927      56:5      
  57:169      58:1922     59:1251     60:1032     61:2592     62:2693   
  63:1892     64:5528     65:2346     66:4694     67:3002     68:1336   
  69:4115     70:1188     71:574      72:2892     74:2594     75:1551   
  76:610      77:2435     78:1849     79:2495     80:2182     81:1962   
  82:1560     83:1317     84:1640     85:3129     86:841      87:2266   
  88:1241     89:4070     90:667      91:8104     92:2215     93:2667   
  94:3676     95:4138     96:1294     97:314      98:1038     99:742    
 100:78      101:1186    102:3143    103:32556   104:4845    105:651    
 106:949     107:2772    108:1111    109:4113    110:2146    111:3297   
 112:2074    113:1594    114:1785    115:2033    116:1889    117:2624   
 118:2392    119:1969    120:1808    121:1327    122:2662    123:2237   
 124:1622    125:2888    126:32      128:1482    129:937     130:1120   
 131:1842    132:803     133:410     134:1719    135:319     136:938    
 137:1062    138:2831    139:1550    140:1392    141:1367    142:1587   
 143:1481    144:1005    145:345     146:2063    147:1854    148:2494   
 149:2580    150:1036    151:1343    152:2028    153:524     154:6491   
 155:1450    156:2470    157:1722    158:1117    159:2328    160:2641   
 161:1637    162:3587    163:1697    164:1639    165:2130    166:1172   
 167:1792    168:3914    169:798     170:4826    171:1021    172:3828   
 173:3032    174:901     175:1201    176:3648    177:4649    178:3572   
 179:2267    180:2356    181:3690    182:3432    183:1806    184:2271   
 185:20730   186:5010    187:4480    188:4063    189:4172    190:9294   
 191:1446    192:10972   193:9066    194:7473    195:5275    196:3145   
 197:2478    198:6037    199:7652    200:8044    201:6311    202:10478  
 203:10170   204:4566    205:3775    206:4494    207:3495    208:4153   
 209:5066    210:4658    211:2580    212:4288    213:3426    214:1061   
 215:50      216:6775    217:2821    218:1362    219:579     220:2048   
 221:1033    222:880     223:2241   

End of report



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