[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Aug 11 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 12 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:                              927197
    Prefixes after maximum aggregation (per Origin AS):          351848
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      452652
Total ASes present in the Internet Routing Table:                 74689
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           64139
Origin ASes announcing only one prefix:                           26321
Transit ASes present in the Internet Routing Table:               10550
Transit-only ASes present in the Internet Routing Table:            460
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:              1089
    Number of instances of unregistered ASNs:                      1091
Number of 32-bit ASNs allocated by the RIRs:                      42412
Number of 32-bit ASNs visible in the Routing Table:               34947
Prefixes from 32-bit ASNs in the Routing Table:                  174202
Number of bogon 32-bit ASNs visible in the Routing Table:            31
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            583
Number of addresses announced to Internet:                   3053031936
    Equivalent to 181 /8s, 249 /16s and 146 /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:      308731

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

Prefixes being announced by APNIC Region ASes:                   246423
    Total APNIC prefixes after maximum aggregation:               70396
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          240152
    Unique aggregates announced from the APNIC address blocks:    98847
APNIC Region origin ASes present in the Internet Routing Table:   13588
    APNIC Prefixes per ASN:                                       17.67
APNIC Region origin ASes announcing only one prefix:               4016
APNIC Region transit ASes present in the Internet Routing Table:   1797
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8907
Number of APNIC addresses announced to Internet:              773483392
    Equivalent to 46 /8s, 26 /16s and 107 /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:                    271694
    Total ARIN prefixes after maximum aggregation:               123742
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           273727
    Unique aggregates announced from the ARIN address blocks:    130872
ARIN Region origin ASes present in the Internet Routing Table:    19086
    ARIN Prefixes per ASN:                                        14.34
ARIN Region origin ASes announcing only one prefix:                6964
ARIN Region transit ASes present in the Internet Routing Table:    1957
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:              1276336896
    Equivalent to 76 /8s, 19 /16s and 91 /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:                    259713
    Total RIPE prefixes after maximum aggregation:               122508
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256719
    Unique aggregates announced from the RIPE address blocks:    159957
RIPE Region origin ASes present in the Internet Routing Table:    28386
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12060
RIPE Region transit ASes present in the Internet Routing Table:    3936
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:   11297
Number of RIPE addresses announced to Internet:               716764800
    Equivalent to 42 /8s, 184 /16s and 246 /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:                  118443
    Total LACNIC prefixes after maximum aggregation:              28555
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         117519
    Unique aggregates announced from the LACNIC address blocks:   49794
LACNIC Region origin ASes present in the Internet Routing Table:  10999
    LACNIC Prefixes per ASN:                                      10.68
LACNIC Region origin ASes announcing only one prefix:              2666
LACNIC Region transit ASes present in the Internet Routing Table:  2324
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:  8812
Number of LACNIC addresses announced to Internet:             178495744
    Equivalent to 10 /8s, 163 /16s and 161 /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:                  29835
    Total AfriNIC prefixes after maximum aggregation:              5907
    AfriNIC Deaggregation factor:                                  5.05
Prefixes being announced from the AfriNIC address blocks:         38497
    Unique aggregates announced from the AfriNIC address blocks:  12695
AfriNIC Region origin ASes present in the Internet Routing Table:  1769
    AfriNIC Prefixes per ASN:                                     21.76
AfriNIC Region origin ASes announcing only one prefix:              615
AfriNIC Region transit ASes present in the Internet Routing Table:  332
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1113
Number of AfriNIC addresses announced to Internet:            107537408
    Equivalent to 6 /8s, 104 /16s and 228 /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        9532       8706      41  CHINAMOBILE-CN China Mobile Communicati
  7545        5699        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4862       4193      76  ERX-CERNET-BKB China Education and Rese
 18403        4223        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3595       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
  7552        3353       1331      21  VIETEL-AS-AP Viettel Group, VN
 45899        3232       1840      97  VNPT-AS-VN VNPT Corp, VN
  9498        3071        498     248  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2554      11271     592  KIXS-AS-KR Korea Telecom, KR
 24560        2481        843     405  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        8814      10964    3185  AMAZON-02, US
 11492        4522        300     622  CABLEONE, US
  7155        4194        288     101  VIASAT-SP-BACKBONE, US
 22773        3554       3053     290  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3527       1319      66  SHAW, CA
   749        3149      54961    2401  DNIC-AS-00749, US
 16625        3090       1510    2327  AKAMAI-AS, US
   367        2973       3824    1409  DNIC-ASBLK-00306-00371, US
396982        2683       3596     388  GOOGLE-CLOUD-PLATFORM, US
 30036        2492        357     426  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        7341       1713     145  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4086       3398     155  AKAMAI-ASN1, NL
  8551        3457        368      33  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2972       2294     914  ROSTELECOM-AS, RU
  9009        2668        247    1395  M247, RO
 34984        2317        362     602  TELLCOM-AS, TR
 58224        1818        944     535  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
 61317        1570        104    1223  ASDETUK www.heficed.com, US

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       11464       3357     601  UNINET, MX
 10620        3534        507     832  Telmex Colombia S.A., CO
 13999        2428        362     636  Mega Cable, S.A. de C.V., MX
 11830        1995        369      64  Instituto Costarricense de Electricidad
 28573        1314       2324     233  Claro NXT Telecomunicacoes Ltda, BR
  6503        1301        344     509  Axtel, S.A.B. de C.V., MX
  3816        1300        767     172  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1123        370      22  Telefonica del Peru S.A.A., PE
 11664        1113        181     435  Techtel LMDS Comunicaciones Interactiva
 26615        1041       2501      49  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        1588        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
 15399         534         54      49  WANANCHI-, KE
 37342         480         32       1  MOVITEL, MZ
 24757         441         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       11464       3357     601  UNINET, MX
  9808        9532       8706      41  CHINAMOBILE-CN China Mobile Communicati
 16509        8814      10964    3185  AMAZON-02, US
 12479        7341       1713     145  UNI2-AS, ES
  7545        5699        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4862       4193      76  ERX-CERNET-BKB China Education and Rese
 11492        4522        300     622  CABLEONE, US
 18403        4223        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        9532         9491  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7341         7196  UNI2-AS, ES
 16509        8814         5629  AMAZON-02, US
  7545        5699         5010  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4862         4786  ERX-CERNET-BKB China Education and Research Net
 18403        4223         4198  FPT-AS-AP FPT Telecom Company, VN
  7155        4194         4093  VIASAT-SP-BACKBONE, US
 20940        4086         3931  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
     46990  UNALLOCATED  8.5.242.0/23              3356  LEVEL3, US
     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
     40493  UNALLOCATED  8.17.26.0/24              3356  LEVEL3, US
     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

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
41.57.124.0/22       Origin:     37442  RESERVED, ZZ
41.57.124.0/22      Transit:     37204  TELONE, ZW
41.57.124.0/23       Origin:     37442  RESERVED, ZZ
41.57.124.0/23      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     /12:295     
/13:575     /14:1196    /15:2070    /16:13495   /17:8298    /18:13876   
/19:25166   /20:44317   /21:51455   /22:110098  /23:98896   /24:556542  
/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        6427        7341  UNI2-AS, ES
  8151        5505       11464  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        2926        3457  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2603        3554  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2149        2492  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2092        3534  Telmex Colombia S.A., CO

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

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

   1:2236      2:1342      3:229       4:5         5:4523      6:134    
   7:6         8:1556      9:1        11:172      12:1516     13:373    
  14:2289     15:302      16:198      17:375      18:594      20:278    
  21:4        22:188      23:6402     24:2488     25:6        27:2495   
  29:19       31:2522     32:81       34:25       35:115      36:1989   
  37:4643     38:5113     39:840      40:147      41:4033     42:2048   
  43:2339     44:315      45:16573    46:4302     47:384      49:1788   
  50:1860     51:585      52:1594     54:391      55:960      56:8      
  57:120      58:1891     59:1175     60:994      61:2483     62:2691   
  63:1923     64:5572     65:2289     66:4944     67:3014     68:1323   
  69:4091     70:1206     71:680      72:2973     74:2623     75:1575   
  76:620      77:2441     78:1834     79:2976     80:2114     81:1794   
  82:1495     83:1279     84:1540     85:2980     86:765      87:1986   
  88:1170     89:3849     90:617      91:7814     92:2064     93:2602   
  94:3525     95:4013     96:1294     97:319      98:1082     99:735    
 100:90      101:1075    102:2885    103:31965   104:4555    105:566    
 106:890     107:2551    108:1118    109:4265    110:2115    111:3186   
 112:2062    113:1808    114:1652    115:1981    116:1923    117:2493   
 118:2656    119:1981    120:1799    121:1147    122:2586    123:2190   
 124:1619    125:2509    128:1446    129:1050    130:1023    131:1971   
 132:815     133:422     134:1790    135:307     136:903     137:970    
 138:2650    139:1594    140:1246    141:1296    142:1475    143:1484   
 144:998     145:342     146:1959    147:1610    148:2437    149:2111   
 150:881     151:1180    152:1844    153:514     154:4687    155:1377   
 156:1909    157:1320    158:1083    159:2230    160:2603    161:1570   
 162:3513    163:1591    164:1716    165:1819    166:990     167:1728   
 168:3862    169:930     170:4601    171:899     172:3636    173:2980   
 174:990     175:1195    176:3787    177:4499    178:3551    179:2153   
 180:2434    181:3506    182:3438    183:1995    184:2297    185:20493  
 186:4733    187:4093    188:4159    189:3722    190:9240    191:1398   
 192:10943   193:8952    194:7276    195:5182    196:3109    197:2432   
 198:6008    199:6079    200:8008    201:5979    202:10563   203:10027  
 204:4538    205:3658    206:4316    207:3452    208:4165    209:4919   
 210:4486    211:2533    212:4245    213:3572    214:1092    215:60     
 216:6699    217:2771    218:1289    219:584     220:2032    221:970    
 222:836     223:2194   

End of report


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