[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Feb 23 18:02:06 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 24 Feb, 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:                              941238
    Prefixes after maximum aggregation (per Origin AS):          358177
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      457381
Total ASes present in the Internet Routing Table:                 75487
    Prefixes per ASN:                                             12.47
Origin-only ASes present in the Internet Routing Table:           64706
Origin ASes announcing only one prefix:                           26609
Transit ASes present in the Internet Routing Table:               10781
Transit-only ASes present in the Internet Routing Table:            505
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:              1075
    Number of instances of unregistered ASNs:                      1077
Number of 32-bit ASNs allocated by the RIRs:                      43684
Number of 32-bit ASNs visible in the Routing Table:               35955
Prefixes from 32-bit ASNs in the Routing Table:                  182097
Number of bogon 32-bit ASNs visible in the Routing Table:            38
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            533
Number of addresses announced to Internet:                   3042201216
    Equivalent to 181 /8s, 84 /16s and 78 /24s
    Percentage of available address space announced:               82.2
    Percentage of allocated address space announced:               82.2
    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:      309759

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

Prefixes being announced by APNIC Region ASes:                   252126
    Total APNIC prefixes after maximum aggregation:               73065
    APNIC Deaggregation factor:                                    3.45
Prefixes being announced from the APNIC address blocks:          244812
    Unique aggregates announced from the APNIC address blocks:   100126
APNIC Region origin ASes present in the Internet Routing Table:   13999
    APNIC Prefixes per ASN:                                       17.49
APNIC Region origin ASes announcing only one prefix:               4223
APNIC Region transit ASes present in the Internet Routing Table:   1886
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         34
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9379
Number of APNIC addresses announced to Internet:              774672512
    Equivalent to 46 /8s, 44 /16s and 144 /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:                    273441
    Total ARIN prefixes after maximum aggregation:               123490
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           278214
    Unique aggregates announced from the ARIN address blocks:    132270
ARIN Region origin ASes present in the Internet Routing Table:    19109
    ARIN Prefixes per ASN:                                        14.56
ARIN Region origin ASes announcing only one prefix:                6970
ARIN Region transit ASes present in the Internet Routing Table:    1976
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:    4850
Number of ARIN addresses announced to Internet:              1269775872
    Equivalent to 75 /8s, 175 /16s and 62 /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:                    262978
    Total RIPE prefixes after maximum aggregation:               125867
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           257823
    Unique aggregates announced from the RIPE address blocks:    161794
RIPE Region origin ASes present in the Internet Routing Table:    28570
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12134
RIPE Region transit ASes present in the Internet Routing Table:    3967
Average RIPE Region AS path length visible:                         4.5
    Max RIPE Region AS path length visible:                          40
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11625
Number of RIPE addresses announced to Internet:               713528576
    Equivalent to 42 /8s, 135 /16s and 149 /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:                  121057
    Total LACNIC prefixes after maximum aggregation:              28946
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         119649
    Unique aggregates announced from the LACNIC address blocks:   49536
LACNIC Region origin ASes present in the Internet Routing Table:  11069
    LACNIC Prefixes per ASN:                                      10.81
LACNIC Region origin ASes announcing only one prefix:              2628
LACNIC Region transit ASes present in the Internet Routing Table:  2402
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:  8920
Number of LACNIC addresses announced to Internet:             177705984
    Equivalent to 10 /8s, 151 /16s and 148 /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:                  30561
    Total AfriNIC prefixes after maximum aggregation:              6095
    AfriNIC Deaggregation factor:                                  5.01
Prefixes being announced from the AfriNIC address blocks:         40207
    Unique aggregates announced from the AfriNIC address blocks:  13211
AfriNIC Region origin ASes present in the Internet Routing Table:  1832
    AfriNIC Prefixes per ASN:                                     21.95
AfriNIC Region origin ASes announcing only one prefix:              654
AfriNIC Region transit ASes present in the Internet Routing Table:  353
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       47
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1181
Number of AfriNIC addresses announced to Internet:            106212352
    Equivalent to 6 /8s, 84 /16s and 172 /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        9831       8740      57  CHINAMOBILE-CN China Mobile Communicati
  7545        5656        777     675  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4929       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4505        347      25  FPT-AS-AP FPT Telecom Company, VN
  7552        3882       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3592       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3510        497     252  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3290       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2740        860     372  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2297      11257     572  KIXS-AS-KR Korea Telecom, KR

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        9651      11239    3315  AMAZON-02, US
 11492        4581        304     644  CABLEONE, US
  7155        4181        288      96  VIASAT-SP-BACKBONE, US
 22773        3616       3062     300  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3596       1320      75  SHAW, CA
 16625        3216       1403    2292  AKAMAI-AS, US
   749        3183      54927    2435  DNIC-AS-00749, US
   174        3028       6638     674  COGENT-174, US
   367        2909       3694    1422  DNIC-ASBLK-00306-00371, US
396982        2758       3639     397  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        7611       1714     147  UNI2-AS, ES
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 20940        3871       3396     128  AKAMAI-ASN1, NL
  9009        3247        282    1584  M247, RO
 12389        2971       2303     906  ROSTELECOM-AS, RU
  8551        2655        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2351        363     595  TELLCOM-AS, TR
 13188        1526         95     119  TRIOLAN, UA
  8452        1502       1852      14  TE-AS TE-AS, EG
 44477        1486         97     707  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       12489       3372     604  UNINET, MX
 10620        3523        496     891  Telmex Colombia S.A., CO
 13999        2522        342     644  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1330       2319     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        787     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1212        340     498  Axtel, S.A.B. de C.V., MX
 11664        1142        179     419  Techtel LMDS Comunicaciones Interactiva
  6147        1088        369      22  Telefonica del Peru S.A.A., PE
 22884        1073        115     381  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        1548        545      28  RAYA-AS, EG
 24863        1544        389      16  LINKdotNET-AS, EG
 36992        1362       1519     281  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1145         73      63  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         554       1861      34  IAM-AS, MA
 36914         548         82       3  KENET-AS, KE
 15399         524         55      53  WANANCHI-, KE
 37342         486         32       1  MOVITEL, MZ

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       12489       3372     604  UNINET, MX
  9808        9831       8740      57  CHINAMOBILE-CN China Mobile Communicati
 16509        9651      11239    3315  AMAZON-02, US
 12479        7611       1714     147  UNI2-AS, ES
  7545        5656        777     675  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4929       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 11492        4581        304     644  CABLEONE, US
 18403        4505        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4181        288      96  VIASAT-SP-BACKBONE, US

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

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

   ASN  No of nets  Net Savings  Description
  9808        9831         9774  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7611         7464  UNI2-AS, ES
 16509        9651         6336  AMAZON-02, US
  7545        5656         4981  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4929         4854  ERX-CERNET-BKB China Education and Research Net
 39891        4758         4698  ALJAWWALSTC-AS, SA
 18403        4505         4480  FPT-AS-AP FPT Telecom Company, VN
  7155        4181         4085  VIASAT-SP-BACKBONE, US
 11492        4581         3937  CABLEONE, US
  7552        3882         3861  VIETEL-AS-AP Viettel Group, VN

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
    215433  UNALLOCATED  5.144.176.0/24           30823  AUROLOGIC aurologic GmbH, DE
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     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
     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

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
23.160.121.0/24      Origin:     39937  LTECH, US
23.160.121.0/24     Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE
23.176.160.0/24      Origin:    397327  RESERVED, ZZ
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, 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       /9:14      /10:37      /11:98      /12:300     
/13:576     /14:1191    /15:2062    /16:13380   /17:8225    /18:13728   
/19:24970   /20:44380   /21:51577   /22:110695  /23:98748   /24:570514  
/25:727     /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        6726        7611  UNI2-AS, ES
  8151        6447       12489  UNINET, MX
 11492        3494        4581  CABLEONE, US
 39891        3440        4758  ALJAWWALSTC-AS, SA
  6327        3393        3596  SHAW, CA
  7155        3125        4181  VIASAT-SP-BACKBONE, US
 22773        2652        3616  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2149        2492  MEDIACOM-ENTERPRISE-BUSINESS, US
  8551        2131        2655  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 10620        2129        3523  Telmex Colombia S.A., CO

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

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

   1:2316      2:1524      3:300       4:6         5:4472      6:164    
   7:6         8:1519      9:1        11:172      12:1468     13:388    
  14:2390     15:313      16:207      17:368      18:738      20:356    
  21:4        22:188      23:6603     24:2704     25:2        27:2566   
  29:19       31:2562     32:48       34:39       35:124      36:2178   
  37:4502     38:6936     39:892      40:140      41:4069     42:2176   
  43:2327     44:326      45:16862    46:4367     47:287      49:1932   
  50:1907     51:575      52:1582     54:312      55:883      56:5      
  57:150      58:2034     59:1180     60:1019     61:2591     62:2684   
  63:1910     64:5517     65:2308     66:4699     67:3050     68:1339   
  69:4053     70:1198     71:575      72:2898     74:2600     75:1554   
  76:633      77:2407     78:1844     79:2473     80:2137     81:1915   
  82:1500     83:1247     84:1654     85:3100     86:838      87:2219   
  88:1226     89:4000     90:678      91:7925     92:2189     93:2637   
  94:3653     95:4075     96:1286     97:312      98:1031     99:745    
 100:92      101:1173    102:3105    103:32551   104:4769    105:601    
 106:939     107:2765    108:1115    109:3997    110:2143    111:3215   
 112:2066    113:1815    114:1777    115:1970    116:1972    117:2653   
 118:2735    119:1948    120:1812    121:1329    122:2687    123:2227   
 124:1607    125:2875    126:28      128:1531    129:925     130:1094   
 131:1819    132:820     133:412     134:1709    135:312     136:922    
 137:1039    138:2793    139:1558    140:1374    141:1346    142:1561   
 143:1479    144:1009    145:345     146:2013    147:1708    148:2506   
 149:2543    150:1026    151:1323    152:1983    153:525     154:5707   
 155:1380    156:2102    157:1547    158:1096    159:2221    160:2604   
 161:1634    162:3604    163:1706    164:1633    165:2106    166:1073   
 167:1710    168:3837    169:786     170:4714    171:1020    172:3829   
 173:3026    174:900     175:1217    176:3653    177:4555    178:3530   
 179:2210    180:2364    181:3635    182:3449    183:2019    184:2266   
 185:20640   186:4905    187:4419    188:4034    189:4123    190:9325   
 191:1419    192:10985   193:9010    194:7428    195:5254    196:3149   
 197:2679    198:6017    199:7212    200:8081    201:6324    202:10492  
 203:10160   204:4545    205:3740    206:4485    207:3538    208:4134   
 209:4995    210:4643    211:2573    212:4292    213:3410    214:1115   
 215:44      216:6713    217:2817    218:1365    219:582     220:2051   
 221:1022    222:877     223:2235   

End of report


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