[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Aug 4 18:02:07 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
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 05 Aug, 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:                              927714
    Prefixes after maximum aggregation (per Origin AS):          351711
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      452501
Total ASes present in the Internet Routing Table:                 74648
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           64103
Origin ASes announcing only one prefix:                           26307
Transit ASes present in the Internet Routing Table:               10545
Transit-only ASes present in the Internet Routing Table:            461
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      68
    Max AS path prepend of ASN (263725)                              64
Prefixes from unregistered ASNs in the Routing Table:              1058
    Number of instances of unregistered ASNs:                      1060
Number of 32-bit ASNs allocated by the RIRs:                      42376
Number of 32-bit ASNs visible in the Routing Table:               34895
Prefixes from 32-bit ASNs in the Routing Table:                  174016
Number of bogon 32-bit ASNs visible in the Routing Table:            33
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            580
Number of addresses announced to Internet:                   3053861632
    Equivalent to 182 /8s, 6 /16s and 59 /24s
    Percentage of available address space announced:               82.5
    Percentage of allocated address space announced:               82.5
    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:      309205

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

Prefixes being announced by APNIC Region ASes:                   246446
    Total APNIC prefixes after maximum aggregation:               70242
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          240196
    Unique aggregates announced from the APNIC address blocks:    98808
APNIC Region origin ASes present in the Internet Routing Table:   13548
    APNIC Prefixes per ASN:                                       17.73
APNIC Region origin ASes announcing only one prefix:               4001
APNIC Region transit ASes present in the Internet Routing Table:   1779
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8864
Number of APNIC addresses announced to Internet:              773502848
    Equivalent to 46 /8s, 26 /16s and 183 /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:                    271941
    Total ARIN prefixes after maximum aggregation:               123823
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           274002
    Unique aggregates announced from the ARIN address blocks:    130924
ARIN Region origin ASes present in the Internet Routing Table:    19093
    ARIN Prefixes per ASN:                                        14.35
ARIN Region origin ASes announcing only one prefix:                6963
ARIN Region transit ASes present in the Internet Routing Table:    1958
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4818
Number of ARIN addresses announced to Internet:              1277299200
    Equivalent to 76 /8s, 34 /16s and 10 /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:                    259952
    Total RIPE prefixes after maximum aggregation:               122501
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256839
    Unique aggregates announced from the RIPE address blocks:    159899
RIPE Region origin ASes present in the Internet Routing Table:    28387
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12061
RIPE Region transit ASes present in the Internet Routing Table:    3943
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11290
Number of RIPE addresses announced to Internet:               716523648
    Equivalent to 42 /8s, 181 /16s and 72 /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
                       196608-213403
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:                  118592
    Total LACNIC prefixes after maximum aggregation:              28503
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         117714
    Unique aggregates announced from the LACNIC address blocks:   49677
LACNIC Region origin ASes present in the Internet Routing Table:  10999
    LACNIC Prefixes per ASN:                                      10.70
LACNIC Region origin ASes announcing only one prefix:              2663
LACNIC Region transit ASes present in the Internet Routing Table:  2330
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        68
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8809
Number of LACNIC addresses announced to Internet:             178518272
    Equivalent to 10 /8s, 163 /16s and 249 /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:                  29725
    Total AfriNIC prefixes after maximum aggregation:              5923
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         38383
    Unique aggregates announced from the AfriNIC address blocks:  12707
AfriNIC Region origin ASes present in the Internet Routing Table:  1768
    AfriNIC Prefixes per ASN:                                     21.71
AfriNIC Region origin ASes announcing only one prefix:              619
AfriNIC Region transit ASes present in the Internet Routing Table:  330
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1114
Number of AfriNIC addresses announced to Internet:            107623168
    Equivalent to 6 /8s, 106 /16s and 51 /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        9529       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5692        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4852       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4247        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3588       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3354       1840      97  VNPT-AS-VN VNPT Corp, VN
  7552        3337       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        3059        498     247  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2559      11271     592  KIXS-AS-KR Korea Telecom, KR
 24560        2472        839     427  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

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        8863      10943    3166  AMAZON-02, US
 11492        4522        300     622  CABLEONE, US
  7155        4194        288     101  VIASAT-SP-BACKBONE, US
 22773        3534       3051     269  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3527       1319      66  SHAW, CA
   749        3150      54961    2402  DNIC-AS-00749, US
 16625        3076       1510    2322  AKAMAI-AS, US
   367        2967       3825    1397  DNIC-ASBLK-00306-00371, US
396982        2684       3596     388  GOOGLE-CLOUD-PLATFORM, US
 30036        2510        359     371  MEDIACOM-ENTERPRISE-BUSINESS, 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        7323       1707     142  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4078       3398     158  AKAMAI-ASN1, NL
  8551        3452        368      33  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2973       2294     914  ROSTELECOM-AS, RU
  9009        2658        246    1389  M247, RO
 34984        2317        362     602  TELLCOM-AS, TR
 58224        1815        944     536  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
  6849        1604        307      17  UKRTELNET, UA

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       11599       3371     601  UNINET, MX
 10620        3535        507     828  Telmex Colombia S.A., CO
 13999        2423        362     635  Mega Cable, S.A. de C.V., MX
 11830        1997        369      64  Instituto Costarricense de Electricidad
 28573        1316       2324     234  Claro NXT Telecomunicacoes Ltda, BR
  3816        1301        767     167  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1299        344     510  Axtel, S.A.B. de C.V., MX
  6147        1123        370      22  Telefonica del Peru S.A.A., PE
 11664        1113        181     435  Techtel LMDS Comunicaciones Interactiva
 26615        1037       2500      48  TIM SA, BR

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        1587        393      19  LINKdotNET-AS, EG
 24835        1517        533      27  RAYA-AS, EG
 36992        1356       1518     282  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1051         67      45  ORANGE-COTE-IVOIRE, CI
 36935         922        521      43  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 37342         498         32       1  MOVITEL, MZ
 15399         459         55      50  WANANCHI-, KE
 24757         440         73       5  EthioNet-AS, ET

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

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       11599       3371     601  UNINET, MX
  9808        9529       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8863      10943    3166  AMAZON-02, US
 12479        7323       1707     142  UNI2-AS, ES
  7545        5692        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4852       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4522        300     622  CABLEONE, US
 18403        4247        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4194        288     101  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        9529         9489  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7323         7181  UNI2-AS, ES
 16509        8863         5697  AMAZON-02, US
  7545        5692         5003  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4852         4777  ERX-CERNET-BKB China Education and Research Net
 18403        4247         4222  FPT-AS-AP FPT Telecom Company, VN
  7155        4194         4093  VIASAT-SP-BACKBONE, US
 20940        4078         3920  AKAMAI-ASN1, NL
 11492        4522         3900  CABLEONE, US

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
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     19695  UNALLOCATED  8.20.161.0/24             7015  COMCAST-7015, 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
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  UNASSIGNED
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:     37204  TELONE, ZW

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      /10:39      /11:102     /12:296     
/13:575     /14:1197    /15:2071    /16:13487   /17:8274    /18:13868   
/19:25172   /20:44383   /21:51499   /22:110131  /23:98935   /24:556908  
/25:747     /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        6412        7323  UNI2-AS, ES
  8151        5608       11599  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3432        4522  CABLEONE, US
  6327        3337        3527  SHAW, CA
  7155        3139        4194  VIASAT-SP-BACKBONE, US
  8551        2921        3452  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2602        3534  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2167        2510  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2094        3535  Telmex Colombia S.A., CO

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

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

   1:2214      2:1340      3:247       4:5         5:4508      6:133    
   7:6         8:1553      9:1        11:172      12:1520     13:384    
  14:2307     15:302      16:198      17:375      18:553      20:273    
  21:4        22:188      23:6379     24:2486     25:6        27:2488   
  29:19       31:2521     32:81       34:25       35:114      36:1992   
  37:4672     38:5127     39:835      40:147      41:3922     42:2038   
  43:2333     44:312      45:16610    46:4328     47:384      49:1787   
  50:1862     51:585      52:1594     54:391      55:950      56:8      
  57:120      58:1893     59:1172     60:992      61:2483     62:2689   
  63:1917     64:5574     65:2292     66:4955     67:3052     68:1321   
  69:4093     70:1207     71:680      72:2980     74:2615     75:1580   
  76:620      77:2452     78:1828     79:2973     80:2114     81:1809   
  82:1494     83:1277     84:1535     85:2972     86:765      87:2000   
  88:1173     89:3860     90:616      91:7816     92:2060     93:2588   
  94:3570     95:4035     96:1297     97:318      98:1147     99:735    
 100:95      101:1076    102:2827    103:31895   104:4572    105:565    
 106:888     107:2551    108:1098    109:4262    110:2118    111:3191   
 112:2063    113:1811    114:1656    115:1987    116:1917    117:2529   
 118:2667    119:1976    120:1813    121:1146    122:2585    123:2186   
 124:1620    125:2509    128:1459    129:1054    130:1026    131:1967   
 132:816     133:422     134:1794    135:306     136:898     137:961    
 138:2606    139:1589    140:1242    141:1293    142:1476    143:1497   
 144:1010    145:342     146:1960    147:1609    148:2430    149:2183   
 150:879     151:1168    152:1848    153:510     154:4681    155:1382   
 156:1877    157:1322    158:1079    159:2228    160:2593    161:1568   
 162:3515    163:1584    164:1717    165:1851    166:998     167:1732   
 168:3880    169:931     170:4600    171:881     172:3633    173:2989   
 174:1051    175:1192    176:3748    177:4552    178:3606    179:2163   
 180:2429    181:3489    182:3446    183:1993    184:2301    185:20500  
 186:4746    187:4108    188:4141    189:3762    190:9221    191:1396   
 192:10943   193:8943    194:7294    195:5176    196:3103    197:2461   
 198:6015    199:6096    200:7998    201:5986    202:10576   203:10059  
 204:4562    205:3664    206:4320    207:3447    208:4155    209:4932   
 210:4476    211:2534    212:4247    213:3593    214:1087    215:60     
 216:6734    217:2765    218:1287    219:584     220:2031    221:967    
 222:839     223:2193   

End of report


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