[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Feb 16 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 17 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:                              942295
    Prefixes after maximum aggregation (per Origin AS):          358047
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      457204
Total ASes present in the Internet Routing Table:                 75421
    Prefixes per ASN:                                             12.49
Origin-only ASes present in the Internet Routing Table:           64642
Origin ASes announcing only one prefix:                           26587
Transit ASes present in the Internet Routing Table:               10779
Transit-only ASes present in the Internet Routing Table:            502
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:              1075
    Number of instances of unregistered ASNs:                      1085
Number of 32-bit ASNs allocated by the RIRs:                      43662
Number of 32-bit ASNs visible in the Routing Table:               35885
Prefixes from 32-bit ASNs in the Routing Table:                  181653
Number of bogon 32-bit ASNs visible in the Routing Table:            65
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            515
Number of addresses announced to Internet:                   3042124416
    Equivalent to 181 /8s, 83 /16s and 34 /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:      311250

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

Prefixes being announced by APNIC Region ASes:                   251971
    Total APNIC prefixes after maximum aggregation:               72931
    APNIC Deaggregation factor:                                    3.45
Prefixes being announced from the APNIC address blocks:          244695
    Unique aggregates announced from the APNIC address blocks:   100135
APNIC Region origin ASes present in the Internet Routing Table:   13993
    APNIC Prefixes per ASN:                                       17.49
APNIC Region origin ASes announcing only one prefix:               4233
APNIC Region transit ASes present in the Internet Routing Table:   1890
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:   9361
Number of APNIC addresses announced to Internet:              774459264
    Equivalent to 46 /8s, 41 /16s and 79 /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:                    274991
    Total ARIN prefixes after maximum aggregation:               123700
    ARIN Deaggregation factor:                                     2.22
Prefixes being announced from the ARIN address blocks:           279962
    Unique aggregates announced from the ARIN address blocks:    132230
ARIN Region origin ASes present in the Internet Routing Table:    19096
    ARIN Prefixes per ASN:                                        14.66
ARIN Region origin ASes announcing only one prefix:                6959
ARIN Region transit ASes present in the Internet Routing Table:    1977
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:    4844
Number of ARIN addresses announced to Internet:              1269649152
    Equivalent to 75 /8s, 173 /16s and 79 /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:                    262785
    Total RIPE prefixes after maximum aggregation:               125730
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           257444
    Unique aggregates announced from the RIPE address blocks:    161703
RIPE Region origin ASes present in the Internet Routing Table:    28554
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12101
RIPE Region transit ASes present in the Internet Routing Table:    3958
Average RIPE Region AS path length visible:                         4.5
    Max RIPE Region AS path length visible:                          37
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11600
Number of RIPE addresses announced to Internet:               713518592
    Equivalent to 42 /8s, 135 /16s and 110 /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:                  120961
    Total LACNIC prefixes after maximum aggregation:              28872
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:         119512
    Unique aggregates announced from the LACNIC address blocks:   49516
LACNIC Region origin ASes present in the Internet Routing Table:  11049
    LACNIC Prefixes per ASN:                                      10.82
LACNIC Region origin ASes announcing only one prefix:              2641
LACNIC Region transit ASes present in the Internet Routing Table:  2400
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:  8905
Number of LACNIC addresses announced to Internet:             177947136
    Equivalent to 10 /8s, 155 /16s and 66 /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:                  30512
    Total AfriNIC prefixes after maximum aggregation:              6103
    AfriNIC Deaggregation factor:                                  5.00
Prefixes being announced from the AfriNIC address blocks:         40167
    Unique aggregates announced from the AfriNIC address blocks:  13192
AfriNIC Region origin ASes present in the Internet Routing Table:  1829
    AfriNIC Prefixes per ASN:                                     21.96
AfriNIC Region origin ASes announcing only one prefix:              653
AfriNIC Region transit ASes present in the Internet Routing Table:  352
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       27
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1175
Number of AfriNIC addresses announced to Internet:            106250752
    Equivalent to 6 /8s, 85 /16s and 66 /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        9825       8739      55  CHINAMOBILE-CN China Mobile Communicati
  7545        5674        784     681  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4920       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4570        347      25  FPT-AS-AP FPT Telecom Company, VN
  7552        3877       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3592       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3488        497     252  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3290       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2711        861     373  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2301      11258     573  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        9617      11225    3379  AMAZON-02, US
 11492        4581        304     652  CABLEONE, US
  7155        4179        288      96  VIASAT-SP-BACKBONE, US
 22773        3619       3062     299  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3596       1320      75  SHAW, CA
 16625        3209       1399    2293  AKAMAI-AS, US
   749        3183      54927    2435  DNIC-AS-00749, US
   174        3013       6637     666  COGENT-174, US
   367        2905       3692    1408  DNIC-ASBLK-00306-00371, US
396982        2756       3639     396  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        7608       1714     147  UNI2-AS, ES
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 20940        3881       3396     129  AKAMAI-ASN1, NL
  9009        3276        284    1591  M247, RO
 12389        2969       2301     905  ROSTELECOM-AS, RU
  8551        2652        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2348        363     593  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
  8452        1497       1852      14  TE-AS TE-AS, EG
 44477        1484         97     709  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       12397       3389     604  UNINET, MX
 10620        3522        496     891  Telmex Colombia S.A., CO
 13999        2514        341     645  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1325       2319     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1305        787     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1213        340     498  Axtel, S.A.B. de C.V., MX
 11664        1136        178     426  Techtel LMDS Comunicaciones Interactiva
  6147        1087        369      22  Telefonica del Peru S.A.A., PE
 22884        1076        116     380  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        1547        545      28  RAYA-AS, EG
 24863        1530        389      16  LINKdotNET-AS, EG
 36992        1361       1519     281  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1135         73      60  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 36914         540         82       3  KENET-AS, KE
 15399         521         55      51  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       12397       3389     604  UNINET, MX
  9808        9825       8739      55  CHINAMOBILE-CN China Mobile Communicati
 16509        9617      11225    3379  AMAZON-02, US
 12479        7608       1714     147  UNI2-AS, ES
  7545        5674        784     681  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4920       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 11492        4581        304     652  CABLEONE, US
 18403        4570        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4179        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        9825         9770  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7608         7461  UNI2-AS, ES
 16509        9617         6238  AMAZON-02, US
  7545        5674         4993  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4920         4845  ERX-CERNET-BKB China Education and Research Net
 39891        4658         4603  ALJAWWALSTC-AS, SA
 18403        4570         4545  FPT-AS-AP FPT Telecom Company, VN
  7155        4179         4083  VIASAT-SP-BACKBONE, US
 11492        4581         3929  CABLEONE, US
  7552        3877         3856  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
 198821333  UNALLOCATED  5.8.179.0/24            198821  ALKOR-AS, RU
     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
23.164.72.0/24       Origin:     49195  SSAC, CN
23.164.72.0/24      Transit:     20473  AS-CHOOPA, US
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     
/13:578     /14:1191    /15:2063    /16:13384   /17:8219    /18:13707   
/19:24998   /20:44401   /21:51889   /22:110765  /23:99465   /24:570433  
/25:737     /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        6724        7608  UNI2-AS, ES
  8151        6393       12397  UNINET, MX
 11492        3495        4581  CABLEONE, US
  6327        3393        3596  SHAW, CA
 39891        3340        4658  ALJAWWALSTC-AS, SA
  7155        3123        4179  VIASAT-SP-BACKBONE, US
 22773        2655        3619  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2144        2487  MEDIACOM-ENTERPRISE-BUSINESS, US
  8551        2128        2652  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 10620        2128        3522  Telmex Colombia S.A., CO

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

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

   1:2320      2:1543      3:296       4:6         5:4481      6:165    
   7:6         8:1523      9:1        11:172      12:1466     13:384    
  14:2384     15:311      16:204      17:363      18:731      20:356    
  21:4        22:188      23:6600     24:2707     25:2        27:2560   
  29:19       31:2543     32:48       34:38       35:124      36:2163   
  37:4478     38:6909     39:900      40:141      41:4039     42:2209   
  43:2330     44:330      45:16894    46:4352     47:287      49:1921   
  50:1903     51:571      52:1584     54:336      55:879      56:5      
  57:148      58:2033     59:1207     60:1018     61:2605     62:2679   
  63:1923     64:5529     65:2326     66:4938     67:3055     68:1333   
  69:4100     70:1199     71:578      72:2918     74:2655     75:1553   
  76:632      77:2391     78:1846     79:2467     80:2131     81:1898   
  82:1520     83:1255     84:1642     85:3095     86:781      87:2220   
  88:1223     89:3987     90:676      91:7916     92:2182     93:2634   
  94:3641     95:4065     96:1287     97:313      98:1032     99:744    
 100:90      101:1168    102:3087    103:32551   104:4752    105:598    
 106:928     107:2769    108:1132    109:4026    110:2150    111:3214   
 112:2069    113:1806    114:1765    115:1968    116:1977    117:2639   
 118:2736    119:1942    120:1812    121:1325    122:2661    123:2222   
 124:1604    125:2854    126:28      128:1518    129:925     130:1091   
 131:1834    132:819     133:412     134:1702    135:311     136:923    
 137:1041    138:2795    139:1552    140:1368    141:1350    142:1563   
 143:1478    144:1011    145:345     146:2012    147:1703    148:2505   
 149:2482    150:1025    151:1325    152:1980    153:528     154:5694   
 155:1367    156:2101    157:1519    158:1095    159:2215    160:2595   
 161:1633    162:3594    163:1701    164:1626    165:2110    166:1071   
 167:1713    168:3836    169:796     170:4720    171:1017    172:3829   
 173:3020    174:902     175:1217    176:3649    177:4541    178:3536   
 179:2238    180:2358    181:3685    182:3467    183:1985    184:2270   
 185:20622   186:4851    187:4433    188:4009    189:4087    190:9318   
 191:1428    192:11007   193:9004    194:7404    195:5265    196:3164   
 197:2669    198:6018    199:7168    200:8079    201:6318    202:10482  
 203:10153   204:4555    205:3744    206:4461    207:3523    208:4143   
 209:4992    210:4639    211:2601    212:4293    213:3402    214:1121   
 215:44      216:6810    217:2764    218:1364    219:597     220:2053   
 221:1021    222:874     223:2231   

End of report


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