[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 26 18:02:19 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 27 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:                              945677
    Prefixes after maximum aggregation (per Origin AS):          361558
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      461329
Total ASes present in the Internet Routing Table:                 75744
    Prefixes per ASN:                                             12.49
Origin-only ASes present in the Internet Routing Table:           64957
Origin ASes announcing only one prefix:                           26638
Transit ASes present in the Internet Routing Table:               10787
Transit-only ASes present in the Internet Routing Table:            515
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:              1054
    Number of instances of unregistered ASNs:                      1056
Number of 32-bit ASNs allocated by the RIRs:                      44273
Number of 32-bit ASNs visible in the Routing Table:               36321
Prefixes from 32-bit ASNs in the Routing Table:                  185962
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:            600
Number of addresses announced to Internet:                   3028129152
    Equivalent to 180 /8s, 125 /16s and 149 /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:      311967

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

Prefixes being announced by APNIC Region ASes:                   250709
    Total APNIC prefixes after maximum aggregation:               73906
    APNIC Deaggregation factor:                                    3.39
Prefixes being announced from the APNIC address blocks:          242790
    Unique aggregates announced from the APNIC address blocks:   100697
APNIC Region origin ASes present in the Internet Routing Table:   14121
    APNIC Prefixes per ASN:                                       17.19
APNIC Region origin ASes announcing only one prefix:               4280
APNIC Region transit ASes present in the Internet Routing Table:   1880
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9507
Number of APNIC addresses announced to Internet:              761371776
    Equivalent to 45 /8s, 97 /16s and 156 /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:                    275608
    Total ARIN prefixes after maximum aggregation:               124937
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           280646
    Unique aggregates announced from the ARIN address blocks:    133663
ARIN Region origin ASes present in the Internet Routing Table:    19144
    ARIN Prefixes per ASN:                                        14.66
ARIN Region origin ASes announcing only one prefix:                6970
ARIN Region transit ASes present in the Internet Routing Table:    1980
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:    4891
Number of ARIN addresses announced to Internet:              1268586752
    Equivalent to 75 /8s, 157 /16s and 25 /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:                    265665
    Total RIPE prefixes after maximum aggregation:               126893
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           260334
    Unique aggregates announced from the RIPE address blocks:    163822
RIPE Region origin ASes present in the Internet Routing Table:    28629
    RIPE Prefixes per ASN:                                         9.09
RIPE Region origin ASes announcing only one prefix:               12121
RIPE Region transit ASes present in the Internet Routing Table:    3978
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          28
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11759
Number of RIPE addresses announced to Internet:               714824960
    Equivalent to 42 /8s, 155 /16s and 93 /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:                  121581
    Total LACNIC prefixes after maximum aggregation:              28932
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:         119777
    Unique aggregates announced from the LACNIC address blocks:   49590
LACNIC Region origin ASes present in the Internet Routing Table:  11085
    LACNIC Prefixes per ASN:                                      10.81
LACNIC Region origin ASes announcing only one prefix:              2614
LACNIC Region transit ASes present in the Internet Routing Table:  2392
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:  8960
Number of LACNIC addresses announced to Internet:             177147648
    Equivalent to 10 /8s, 143 /16s and 15 /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:                  31060
    Total AfriNIC prefixes after maximum aggregation:              6200
    AfriNIC Deaggregation factor:                                  5.01
Prefixes being announced from the AfriNIC address blocks:         41530
    Unique aggregates announced from the AfriNIC address blocks:  13091
AfriNIC Region origin ASes present in the Internet Routing Table:  1841
    AfriNIC Prefixes per ASN:                                     22.56
AfriNIC Region origin ASes announcing only one prefix:              653
AfriNIC Region transit ASes present in the Internet Routing Table:  360
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1204
Number of AfriNIC addresses announced to Internet:            105882112
    Equivalent to 6 /8s, 79 /16s and 162 /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        9891       8744      68  CHINAMOBILE-CN China Mobile Communicati
  7545        5668        777     678  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4938       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3881       1330      20  VIETEL-AS-AP Viettel Group, VN
  9498        3610        500     257  BBIL-AP BHARTI Airtel Ltd., IN
  7713        3584       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3288       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2781        863     372  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2308      11524     584  KIXS-AS-KR Korea Telecom, KR
  4755        2197        434     195  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        9805      11358    3507  AMAZON-02, US
 11492        4597        305     618  CABLEONE, US
  7155        4169        287      89  VIASAT-SP-BACKBONE, US
  6327        3614       1320      79  SHAW, CA
 22773        3506       3046     240  ASN-CXA-ALL-CCI-22773-RDC, US
   174        3414       6630     840  COGENT-174, US
   749        3200      54911    2452  DNIC-AS-00749, US
 16625        3113       1323    2217  AKAMAI-AS, US
   367        2820       3548    1345  DNIC-ASBLK-00306-00371, US
396982        2767       3639     415  GOOGLE-CLOUD-PLATFORM, 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        7709       1708     144  UNI2-AS, ES
 39891        4741        285      59  ALJAWWALSTC-AS, SA
 20940        3904       3396     132  AKAMAI-ASN1, NL
  9009        3298        286    1620  M247, RO
 12389        2771       2293     883  ROSTELECOM-AS, RU
  8551        2626        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2347        363     584  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
  8452        1563       1852      14  TE-AS TE-AS, EG
 44477        1531        100     723  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       12384       3314     484  UNINET, MX
 10620        3526        495     909  Telmex Colombia S.A., CO
 13999        2540        351     661  Mega Cable, S.A. de C.V., MX
 11830        2004        369      64  Instituto Costarricense de Electricidad
 28573        1347       2313     251  Claro NXT Telecomunicacoes Ltda, BR
  3816        1314        788     192  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1165        176     433  Techtel LMDS Comunicaciones Interactiva
  6503        1133        314     478  Axtel, S.A.B. de C.V., MX
  6147        1104        369      22  Telefonica del Peru S.A.A., PE
 22884        1071        114     374  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        1503        389      20  LINKdotNET-AS, EG
 36992        1370       1519     282  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1203         76      65  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         556       1861      35  IAM-AS, MA
 15399         531         55      54  WANANCHI-, KE
 36914         486         82       3  KENET-AS, KE
 24757         435         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       12384       3314     484  UNINET, MX
  9808        9891       8744      68  CHINAMOBILE-CN China Mobile Communicati
 16509        9805      11358    3507  AMAZON-02, US
 12479        7709       1708     144  UNI2-AS, ES
  7545        5668        777     678  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4938       4192      74  ERX-CERNET-BKB China Education and Rese
 39891        4741        285      59  ALJAWWALSTC-AS, SA
 11492        4597        305     618  CABLEONE, US
  7155        4169        287      89  VIASAT-SP-BACKBONE, US
 20940        3904       3396     132  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
  9808        9891         9823  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7709         7565  UNI2-AS, ES
 16509        9805         6298  AMAZON-02, US
  7545        5668         4990  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4938         4864  ERX-CERNET-BKB China Education and Research Net
 39891        4741         4682  ALJAWWALSTC-AS, SA
  7155        4169         4080  VIASAT-SP-BACKBONE, US
 11492        4597         3979  CABLEONE, US
  7552        3881         3861  VIETEL-AS-AP Viettel Group, VN
 20940        3904         3772  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
23.176.168.0/24      Origin:     17095  BUILDBUDDY-01, US
23.176.168.0/24     Transit:     36236  NETACTUATE, 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     
/13:582     /14:1183    /15:2067    /16:13275   /17:8269    /18:13744   
/19:24829   /20:43910   /21:51691   /22:111358  /23:98731   /24:574852  
/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        6820        7709  UNI2-AS, ES
  8151        6426       12384  UNINET, MX
 11492        3510        4597  CABLEONE, US
 39891        3424        4741  ALJAWWALSTC-AS, SA
  6327        3410        3614  SHAW, CA
  7155        3113        4169  VIASAT-SP-BACKBONE, US
 22773        2596        3506  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2153        2499  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2139        3526  Telmex Colombia S.A., CO
  8551        2102        2626  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)
----------------------------------------------

   1:1653      2:1487      3:332       4:6         5:4528      6:163    
   7:6         8:1511      9:1        11:172      12:1458     13:365    
  14:2411     15:317      16:209      17:369      18:767      20:364    
  21:4        22:188      23:6760     24:2711     25:2        27:2568   
  29:19       31:2606     32:48       34:61       35:131      36:2294   
  37:4475     38:7352     39:893      40:122      41:4124     42:985    
  43:2382     44:314      45:17082    46:4460     47:306      49:1947   
  50:1925     51:573      52:1578     54:307      55:986      56:5      
  57:169      58:1922     59:1246     60:1031     61:2597     62:2694   
  63:1898     64:5522     65:2340     66:4678     67:2991     68:1337   
  69:4107     70:1190     71:576      72:2889     74:2600     75:1554   
  76:611      77:2470     78:1854     79:2510     80:2189     81:2008   
  82:1556     83:1335     84:1656     85:3140     86:848      87:2262   
  88:1243     89:4089     90:671      91:8102     92:2299     93:2684   
  94:3663     95:4132     96:1295     97:315      98:1043     99:741    
 100:74      101:1184    102:3166    103:32588   104:4860    105:656    
 106:945     107:2791    108:1111    109:4055    110:2148    111:3295   
 112:2070    113:1594    114:1798    115:2035    116:1897    117:2623   
 118:2392    119:1970    120:1807    121:1327    122:2688    123:2234   
 124:1626    125:2887    126:32      128:1483    129:937     130:1130   
 131:1832    132:804     133:410     134:1733    135:321     136:937    
 137:1066    138:2823    139:1557    140:1396    141:1367    142:1585   
 143:1477    144:1001    145:361     146:2053    147:1867    148:2497   
 149:2699    150:1035    151:1348    152:2050    153:524     154:6469   
 155:1460    156:2466    157:1753    158:1149    159:2322    160:2654   
 161:1657    162:3563    163:1700    164:1640    165:2122    166:1173   
 167:1790    168:3871    169:798     170:4828    171:1024    172:3837   
 173:3041    174:897     175:1204    176:3641    177:4683    178:3737   
 179:2221    180:2347    181:3719    182:3437    183:1808    184:2267   
 185:20753   186:5000    187:4451    188:4066    189:4161    190:9400   
 191:1466    192:10969   193:9094    194:7493    195:5260    196:3161   
 197:2476    198:6051    199:7717    200:7993    201:6319    202:10487  
 203:10176   204:4585    205:3790    206:4494    207:3540    208:4150   
 209:5061    210:4656    211:2581    212:4270    213:3439    214:1060   
 215:50      216:6773    217:2950    218:1359    219:579     220:2053   
 221:1033    222:883     223:2245   

End of report


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