[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Dec 22 18:02:21 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 23 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:                              938320
    Prefixes after maximum aggregation (per Origin AS):          357697
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      455871
Total ASes present in the Internet Routing Table:                 75194
    Prefixes per ASN:                                             12.48
Origin-only ASes present in the Internet Routing Table:           64510
Origin ASes announcing only one prefix:                           26559
Transit ASes present in the Internet Routing Table:               10684
Transit-only ASes present in the Internet Routing Table:            478
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:              1046
    Number of instances of unregistered ASNs:                      1048
Number of 32-bit ASNs allocated by the RIRs:                      43262
Number of 32-bit ASNs visible in the Routing Table:               35597
Prefixes from 32-bit ASNs in the Routing Table:                  179298
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:                   3048268032
    Equivalent to 181 /8s, 176 /16s and 225 /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:      311106

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

Prefixes being announced by APNIC Region ASes:                   250420
    Total APNIC prefixes after maximum aggregation:               72334
    APNIC Deaggregation factor:                                    3.46
Prefixes being announced from the APNIC address blocks:          243490
    Unique aggregates announced from the APNIC address blocks:    99600
APNIC Region origin ASes present in the Internet Routing Table:   13859
    APNIC Prefixes per ASN:                                       17.57
APNIC Region origin ASes announcing only one prefix:               4169
APNIC Region transit ASes present in the Internet Routing Table:   1868
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:   9209
Number of APNIC addresses announced to Internet:              771127168
    Equivalent to 45 /8s, 246 /16s and 119 /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:                    273923
    Total ARIN prefixes after maximum aggregation:               124653
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           278717
    Unique aggregates announced from the ARIN address blocks:    132754
ARIN Region origin ASes present in the Internet Routing Table:    19074
    ARIN Prefixes per ASN:                                        14.61
ARIN Region origin ASes announcing only one prefix:                6947
ARIN Region transit ASes present in the Internet Routing Table:    1947
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:    4825
Number of ARIN addresses announced to Internet:              1276079616
    Equivalent to 76 /8s, 15 /16s and 110 /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:                    262377
    Total RIPE prefixes after maximum aggregation:               125089
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           256978
    Unique aggregates announced from the RIPE address blocks:    160861
RIPE Region origin ASes present in the Internet Routing Table:    28508
    RIPE Prefixes per ASN:                                         9.01
RIPE Region origin ASes announcing only one prefix:               12121
RIPE Region transit ASes present in the Internet Routing Table:    3945
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          39
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11496
Number of RIPE addresses announced to Internet:               714582400
    Equivalent to 42 /8s, 151 /16s and 169 /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:                  120221
    Total LACNIC prefixes after maximum aggregation:              28877
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         118920
    Unique aggregates announced from the LACNIC address blocks:   49457
LACNIC Region origin ASes present in the Internet Routing Table:  11061
    LACNIC Prefixes per ASN:                                      10.75
LACNIC Region origin ASes announcing only one prefix:              2675
LACNIC Region transit ASes present in the Internet Routing Table:  2370
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:  8908
Number of LACNIC addresses announced to Internet:             178445056
    Equivalent to 10 /8s, 162 /16s and 219 /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:                  30333
    Total AfriNIC prefixes after maximum aggregation:              6031
    AfriNIC Deaggregation factor:                                  5.03
Prefixes being announced from the AfriNIC address blocks:         39705
    Unique aggregates announced from the AfriNIC address blocks:  12778
AfriNIC Region origin ASes present in the Internet Routing Table:  1819
    AfriNIC Prefixes per ASN:                                     21.83
AfriNIC Region origin ASes announcing only one prefix:              647
AfriNIC Region transit ASes present in the Internet Routing Table:  351
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: 1159
Number of AfriNIC addresses announced to Internet:            107744768
    Equivalent to 6 /8s, 108 /16s and 14 /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        9797       8738      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5677        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4927       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4529        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3603       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3408        495     254  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3269       1872      99  VNPT-AS-VN VNPT Corp, VN
  7552        3025       1330      20  VIETEL-AS-AP Viettel Group, VN
 24560        2658        856     374  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2483      11259     585  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        9433      11194    3364  AMAZON-02, US
 11492        4562        303     680  CABLEONE, US
  7155        4173        288      96  VIASAT-SP-BACKBONE, US
  6327        3567       1320      69  SHAW, CA
 22773        3480       3054     298  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3207       1420    2334  AKAMAI-AS, US
   749        3162      54930    2414  DNIC-AS-00749, US
   367        2971       3860    1419  DNIC-ASBLK-00306-00371, US
396982        2740       3639     386  GOOGLE-CLOUD-PLATFORM, US
  7018        2521      23623    1569  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        7565       1714     146  UNI2-AS, ES
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 20940        3996       3397     140  AKAMAI-ASN1, NL
  9009        3497        301    1637  M247, RO
  8551        3368        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        3009       2300     911  ROSTELECOM-AS, RU
 34984        2332        360     595  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
 58224        1524        872     586  TCI, IR
 44477        1447         95     715  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       12144       3381     593  UNINET, MX
 10620        3519        497     886  Telmex Colombia S.A., CO
 13999        2493        339     636  Mega Cable, S.A. de C.V., MX
 11830        2004        369      64  Instituto Costarricense de Electricidad
 28573        1345       2318     237  Claro NXT Telecomunicacoes Ltda, BR
  3816        1307        787     192  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1244        341     502  Axtel, S.A.B. de C.V., MX
 11664        1099        177     430  Techtel LMDS Comunicaciones Interactiva
  6147        1088        369      22  Telefonica del Peru S.A.A., PE
 22884        1067        115     378  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        1545        389      16  LINKdotNET-AS, EG
 36992        1360       1518     280  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1053         68      50  ORANGE-COTE-IVOIRE, CI
 36935         936        521      43  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 15399         533         55      54  WANANCHI-, KE
 36914         515         82       3  KENET-AS, KE
 37342         490         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       12144       3381     593  UNINET, MX
  9808        9797       8738      50  CHINAMOBILE-CN China Mobile Communicati
 16509        9433      11194    3364  AMAZON-02, US
 12479        7565       1714     146  UNI2-AS, ES
  7545        5677        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4927       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 11492        4562        303     680  CABLEONE, US
 18403        4529        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        9797         9747  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7565         7419  UNI2-AS, ES
 16509        9433         6069  AMAZON-02, US
  7545        5677         4990  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4927         4852  ERX-CERNET-BKB China Education and Research Net
 39891        4570         4516  ALJAWWALSTC-AS, SA
 18403        4529         4504  FPT-AS-AP FPT Telecom Company, VN
  7155        4173         4077  VIASAT-SP-BACKBONE, US
 11492        4562         3882  CABLEONE, US
 20940        3996         3856  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      /10:38      /11:99      /12:298     
/13:581     /14:1193    /15:2063    /16:13445   /17:8277    /18:13823   
/19:25161   /20:44404   /21:51706   /22:110683  /23:99704   /24:566080  
/25:735     /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        6653        7565  UNI2-AS, ES
  8151        6158       12144  UNINET, MX
 11492        3476        4562  CABLEONE, US
  6327        3371        3567  SHAW, CA
 39891        3324        4570  ALJAWWALSTC-AS, SA
  7155        3117        4173  VIASAT-SP-BACKBONE, US
  8551        2845        3368  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2533        3480  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)
----------------------------------------------

   1:2313      2:1411      3:281       4:5         5:4390      6:163    
   7:6         8:1531      9:1        11:172      12:1488     13:374    
  14:2336     15:309      16:206      17:362      18:707      20:344    
  21:4        22:188      23:6574     24:2607     25:2        27:2514   
  29:19       31:2546     32:56       34:35       35:119      36:2102   
  37:4489     38:5768     39:882      40:147      41:4118     42:2197   
  43:2324     44:325      45:16677    46:4399     47:285      49:1911   
  50:1897     51:573      52:1595     54:376      55:886      56:5      
  57:129      58:1930     59:1175     60:1012     61:2576     62:2745   
  63:1911     64:5501     65:2337     66:5011     67:3046     68:1330   
  69:4051     70:1170     71:609      72:2928     74:2640     75:1548   
  76:629      77:2340     78:1826     79:3015     80:2112     81:1869   
  82:1520     83:1325     84:1626     85:2990     86:790      87:1968   
  88:1228     89:3961     90:658      91:7905     92:2172     93:2639   
  94:3587     95:3997     96:1299     97:316      98:1017     99:737    
 100:94      101:1155    102:3017    103:32510   104:4795    105:601    
 106:988     107:2763    108:1146    109:4175    110:2141    111:3206   
 112:2084    113:1780    114:1758    115:2000    116:1957    117:2513   
 118:2767    119:1945    120:1806    121:1303    122:2647    123:2221   
 124:1646    125:2805    128:1479    129:919     130:1067    131:1968   
 132:831     133:409     134:1708    135:292     136:911     137:1023   
 138:2740    139:1569    140:1342    141:1350    142:1541    143:1536   
 144:1004    145:338     146:2018    147:1640    148:2483    149:2395   
 150:1015    151:1311    152:1849    153:529     154:5411    155:1369   
 156:2120    157:1369    158:1081    159:2207    160:2617    161:1617   
 162:3598    163:1639    164:1630    165:1855    166:1079    167:1746   
 168:3857    169:791     170:4721    171:981     172:3769    173:3021   
 174:896     175:1217    176:3600    177:4671    178:3529    179:2224   
 180:2340    181:3617    182:3447    183:2028    184:2271    185:20481  
 186:4850    187:4309    188:3938    189:3959    190:9347    191:1516   
 192:11035   193:8993    194:7349    195:5226    196:3132    197:2637   
 198:6017    199:6844    200:8109    201:6245    202:10574   203:10087  
 204:4592    205:3686    206:4443    207:3495    208:4101    209:4947   
 210:4611    211:2589    212:4211    213:3379    214:1117    215:49     
 216:6769    217:2768    218:1327    219:589     220:2029    221:1021   
 222:881     223:2226   

End of report


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