[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Dec 29 18:02:17 UTC 2023


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
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 30 Dec, 2023

  BGP Table (Global) as seen in Japan.

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

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

BGP routing table entries examined:                              939879
    Prefixes after maximum aggregation (per Origin AS):          357841
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      456305
Total ASes present in the Internet Routing Table:                 75203
    Prefixes per ASN:                                             12.50
Origin-only ASes present in the Internet Routing Table:           64518
Origin ASes announcing only one prefix:                           26555
Transit ASes present in the Internet Routing Table:               10685
Transit-only ASes present in the Internet Routing Table:            479
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:              1054
    Number of instances of unregistered ASNs:                      1056
Number of 32-bit ASNs allocated by the RIRs:                      43280
Number of 32-bit ASNs visible in the Routing Table:               35605
Prefixes from 32-bit ASNs in the Routing Table:                  179570
Number of bogon 32-bit ASNs visible in the Routing Table:            19
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            510
Number of addresses announced to Internet:                   3046009344
    Equivalent to 181 /8s, 142 /16s and 106 /24s
    Percentage of available address space announced:               82.3
    Percentage of allocated address space announced:               82.3
    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:      311347

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

Prefixes being announced by APNIC Region ASes:                   251361
    Total APNIC prefixes after maximum aggregation:               72465
    APNIC Deaggregation factor:                                    3.47
Prefixes being announced from the APNIC address blocks:          244404
    Unique aggregates announced from the APNIC address blocks:    99622
APNIC Region origin ASes present in the Internet Routing Table:   13876
    APNIC Prefixes per ASN:                                       17.61
APNIC Region origin ASes announcing only one prefix:               4178
APNIC Region transit ASes present in the Internet Routing Table:   1870
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:   9228
Number of APNIC addresses announced to Internet:              771056768
    Equivalent to 45 /8s, 245 /16s and 100 /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:                    274175
    Total ARIN prefixes after maximum aggregation:               124635
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           279162
    Unique aggregates announced from the ARIN address blocks:    133085
ARIN Region origin ASes present in the Internet Routing Table:    19081
    ARIN Prefixes per ASN:                                        14.63
ARIN Region origin ASes announcing only one prefix:                6951
ARIN Region transit ASes present in the Internet Routing Table:    1949
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:    4826
Number of ARIN addresses announced to Internet:              1273966080
    Equivalent to 75 /8s, 239 /16s and 46 /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:                    262575
    Total RIPE prefixes after maximum aggregation:               125128
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           257040
    Unique aggregates announced from the RIPE address blocks:    160933
RIPE Region origin ASes present in the Internet Routing Table:    28502
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12117
RIPE Region transit ASes present in the Internet Routing Table:    3941
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          37
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11494
Number of RIPE addresses announced to Internet:               714558848
    Equivalent to 42 /8s, 151 /16s and 77 /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:                  120300
    Total LACNIC prefixes after maximum aggregation:              28858
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         118933
    Unique aggregates announced from the LACNIC address blocks:   49438
LACNIC Region origin ASes present in the Internet Routing Table:  11053
    LACNIC Prefixes per ASN:                                      10.76
LACNIC Region origin ASes announcing only one prefix:              2666
LACNIC Region transit ASes present in the Internet Routing Table:  2363
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:  8902
Number of LACNIC addresses announced to Internet:             178379264
    Equivalent to 10 /8s, 161 /16s and 218 /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:                  30414
    Total AfriNIC prefixes after maximum aggregation:              6038
    AfriNIC Deaggregation factor:                                  5.04
Prefixes being announced from the AfriNIC address blocks:         39830
    Unique aggregates announced from the AfriNIC address blocks:  12806
AfriNIC Region origin ASes present in the Internet Routing Table:  1815
    AfriNIC Prefixes per ASN:                                     21.94
AfriNIC Region origin ASes announcing only one prefix:              643
AfriNIC Region transit ASes present in the Internet Routing Table:  350
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       27
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1155
Number of AfriNIC addresses announced to Internet:            107755520
    Equivalent to 6 /8s, 108 /16s and 56 /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        9808       8739      55  CHINAMOBILE-CN China Mobile Communicati
  7545        5675        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4925       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4536        347      25  FPT-AS-AP FPT Telecom Company, VN
  7552        3834       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3598       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3416        495     254  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3269       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2660        856     371  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2331      11256     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        9451      11199    3359  AMAZON-02, US
 11492        4562        303     680  CABLEONE, US
  7155        4173        288      96  VIASAT-SP-BACKBONE, US
  6327        3567       1320      69  SHAW, CA
 22773        3502       3055     299  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3196       1416    2327  AKAMAI-AS, US
   749        3162      54930    2414  DNIC-AS-00749, US
   367        2969       3840    1418  DNIC-ASBLK-00306-00371, US
396982        2740       3639     386  GOOGLE-CLOUD-PLATFORM, US
  7018        2502      23622    1570  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        7564       1714     146  UNI2-AS, ES
 39891        4641        279      54  ALJAWWALSTC-AS, SA
 20940        4011       3397     142  AKAMAI-ASN1, NL
  9009        3487        300    1632  M247, RO
  8551        3338        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        3014       2301     912  ROSTELECOM-AS, RU
 34984        2327        359     597  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
 58224        1510        872     576  TCI, IR
 44477        1448         95     714  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       12153       3384     590  UNINET, MX
 10620        3519        497     886  Telmex Colombia S.A., CO
 13999        2494        339     636  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1345       2318     237  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        787     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1245        341     503  Axtel, S.A.B. de C.V., MX
 11664        1106        178     423  Techtel LMDS Comunicaciones Interactiva
  6147        1087        369      22  Telefonica del Peru S.A.A., PE
 22884        1075        116     373  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
 24863        1588        389      16  LINKdotNET-AS, EG
 24835        1548        545      28  RAYA-AS, EG
 36992        1360       1518     280  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1071         69      52  ORANGE-COTE-IVOIRE, CI
 36935         936        521      43  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         533         55      54  WANANCHI-, KE
 36914         508         82       3  KENET-AS, KE
 37342         481         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       12153       3384     590  UNINET, MX
  9808        9808       8739      55  CHINAMOBILE-CN China Mobile Communicati
 16509        9451      11199    3359  AMAZON-02, US
 12479        7564       1714     146  UNI2-AS, ES
  7545        5675        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4925       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4641        279      54  ALJAWWALSTC-AS, SA
 11492        4562        303     680  CABLEONE, US
 18403        4536        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4173        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        9808         9753  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7564         7418  UNI2-AS, ES
 16509        9451         6092  AMAZON-02, US
  7545        5675         4988  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4925         4850  ERX-CERNET-BKB China Education and Research Net
 39891        4641         4587  ALJAWWALSTC-AS, SA
 18403        4536         4511  FPT-AS-AP FPT Telecom Company, VN
  7155        4173         4077  VIASAT-SP-BACKBONE, US
 11492        4562         3882  CABLEONE, US
 20940        4011         3869  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
     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
23.176.160.0/24      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
36.255.139.0/24      Origin:     56050  NEW-SHINE-INTERNET-TH 134 Yenchit Road, 
36.255.139.0/24     Transit:     58913  HCL-TH 4819 Supapong 3 Alley, Srinakarin

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      /11:99      /12:298     
/13:581     /14:1193    /15:2062    /16:13443   /17:8271    /18:13804   
/19:25155   /20:44412   /21:52007   /22:110959  /23:99840   /24:566972  
/25:716     /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        6652        7564  UNI2-AS, ES
  8151        6161       12153  UNINET, MX
 11492        3476        4562  CABLEONE, US
  6327        3371        3567  SHAW, CA
 39891        3324        4641  ALJAWWALSTC-AS, SA
  7155        3117        4173  VIASAT-SP-BACKBONE, US
  8551        2815        3338  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2554        3502  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2130        2473  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2122        3519  Telmex Colombia S.A., CO

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

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

   1:2311      2:1408      3:283       4:5         5:4402      6:163    
   7:6         8:1533      9:1        11:172      12:1488     13:375    
  14:2333     15:309      16:206      17:362      18:709      20:344    
  21:4        22:188      23:6580     24:2606     25:2        27:2554   
  29:19       31:2547     32:56       34:35       35:121      36:2129   
  37:4483     38:5819     39:884      40:147      41:4127     42:2203   
  43:2332     44:325      45:16699    46:4349     47:285      49:1909   
  50:1887     51:574      52:1593     54:368      55:892      56:5      
  57:129      58:1926     59:1174     60:1012     61:2568     62:2755   
  63:1911     64:5501     65:2338     66:5022     67:3040     68:1339   
  69:4059     70:1180     71:610      72:2921     74:2635     75:1547   
  76:629      77:2338     78:1827     79:2999     80:2113     81:1875   
  82:1521     83:1326     84:1631     85:2992     86:793      87:1962   
  88:1231     89:3966     90:657      91:7904     92:2172     93:2629   
  94:3590     95:3995     96:1298     97:315      98:1018     99:738    
 100:94      101:1160    102:3013    103:32524   104:4782    105:601    
 106:982     107:2764    108:1148    109:4160    110:2141    111:3206   
 112:2084    113:1782    114:1752    115:1999    116:1983    117:2628   
 118:2774    119:1944    120:1808    121:1314    122:2646    123:2221   
 124:1641    125:2811    128:1485    129:919     130:1068    131:1965   
 132:829     133:411     134:1703    135:304     136:883     137:1036   
 138:2710    139:1572    140:1342    141:1340    142:1540    143:1532   
 144:1002    145:340     146:2015    147:1634    148:2485    149:2398   
 150:1015    151:1311    152:1848    153:529     154:5498    155:1369   
 156:2108    157:1369    158:1079    159:2209    160:2622    161:1616   
 162:3597    163:1673    164:1631    165:2099    166:1076    167:1740   
 168:3848    169:792     170:4698    171:996     172:3775    173:3019   
 174:896     175:1217    176:3598    177:4719    178:3534    179:2234   
 180:2355    181:3644    182:3455    183:2025    184:2273    185:20509  
 186:4807    187:4379    188:4019    189:3964    190:9338    191:1502   
 192:11033   193:8983    194:7360    195:5236    196:3134    197:2609   
 198:6020    199:6841    200:8096    201:6251    202:10563   203:10105  
 204:4589    205:3676    206:4510    207:3500    208:4101    209:4955   
 210:4625    211:2589    212:4218    213:3390    214:1113    215:50     
 216:6781    217:2773    218:1336    219:588     220:2051    221:1021   
 222:870     223:2227   

End of report


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