[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Oct 14 18:03:14 UTC 2022


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 15 Oct, 2022

  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:                              912340
    Prefixes after maximum aggregation (per Origin AS):          344180
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      440144
Total ASes present in the Internet Routing Table:                 73730
    Prefixes per ASN:                                             12.37
Origin-only ASes present in the Internet Routing Table:           63304
Origin ASes announcing only one prefix:                           25999
Transit ASes present in the Internet Routing Table:               10426
Transit-only ASes present in the Internet Routing Table:            401
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1107
    Number of instances of unregistered ASNs:                      1111
Number of 32-bit ASNs allocated by the RIRs:                      40378
Number of 32-bit ASNs visible in the Routing Table:               33509
Prefixes from 32-bit ASNs in the Routing Table:                  161515
Number of bogon 32-bit ASNs visible in the Routing Table:            17
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            558
Number of addresses announced to Internet:                   3064243328
    Equivalent to 182 /8s, 164 /16s and 164 /24s
    Percentage of available address space announced:               82.8
    Percentage of allocated address space announced:               82.8
    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:      309744

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

Prefixes being announced by APNIC Region ASes:                   238366
    Total APNIC prefixes after maximum aggregation:               67845
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          233178
    Unique aggregates announced from the APNIC address blocks:    96623
APNIC Region origin ASes present in the Internet Routing Table:   13030
    APNIC Prefixes per ASN:                                       17.90
APNIC Region origin ASes announcing only one prefix:               3754
APNIC Region transit ASes present in the Internet Routing Table:   1757
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8273
Number of APNIC addresses announced to Internet:              773887232
    Equivalent to 46 /8s, 32 /16s and 149 /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, 131072-151865
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:                    266403
    Total ARIN prefixes after maximum aggregation:               121538
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           267553
    Unique aggregates announced from the ARIN address blocks:    128610
ARIN Region origin ASes present in the Internet Routing Table:    19034
    ARIN Prefixes per ASN:                                        14.06
ARIN Region origin ASes announcing only one prefix:                6929
ARIN Region transit ASes present in the Internet Routing Table:    1925
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4635
Number of ARIN addresses announced to Internet:              1289615104
    Equivalent to 76 /8s, 221 /16s and 247 /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:                    261568
    Total RIPE prefixes after maximum aggregation:               120368
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           258541
    Unique aggregates announced from the RIPE address blocks:    154045
RIPE Region origin ASes present in the Internet Routing Table:    28178
    RIPE Prefixes per ASN:                                         9.18
RIPE Region origin ASes announcing only one prefix:               12021
RIPE Region transit ASes present in the Internet Routing Table:    3979
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10839
Number of RIPE addresses announced to Internet:               716498816
    Equivalent to 42 /8s, 180 /16s and 231 /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:                  116409
    Total LACNIC prefixes after maximum aggregation:              28033
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         116001
    Unique aggregates announced from the LACNIC address blocks:   48337
LACNIC Region origin ASes present in the Internet Routing Table:  10979
    LACNIC Prefixes per ASN:                                      10.57
LACNIC Region origin ASes announcing only one prefix:              2698
LACNIC Region transit ASes present in the Internet Routing Table:  2248
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:  8739
Number of LACNIC addresses announced to Internet:             176010496
    Equivalent to 10 /8s, 125 /16s and 181 /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:                  28487
    Total AfriNIC prefixes after maximum aggregation:              5575
    AfriNIC Deaggregation factor:                                  5.11
Prefixes being announced from the AfriNIC address blocks:         36509
    Unique aggregates announced from the AfriNIC address blocks:  12074
AfriNIC Region origin ASes present in the Internet Routing Table:  1693
    AfriNIC Prefixes per ASN:                                     21.56
AfriNIC Region origin ASes announcing only one prefix:              597
AfriNIC Region transit ASes present in the Internet Routing Table:  325
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1023
Number of AfriNIC addresses announced to Internet:            107923200
    Equivalent to 6 /8s, 110 /16s and 199 /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        9071       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5928        786     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4723       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3592       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3506       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3388       1877      66  VNPT-AS-VN VNPT Corp, VN
  4766        2530      11252     600  KIXS-AS-KR Korea Telecom, KR
  9498        2467        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2237        852     412  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2179       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        7342      10579    2894  AMAZON-02, US
 11492        4603        305     518  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3781       3066     355  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3547       1849    2541  AKAMAI-AS, US
  6327        3491       1319      64  SHAW, CA
   749        3028      50696    2295  DNIC-AS-00749, US
 30036        2600        367     256  MEDIACOM-ENTERPRISE-BUSINESS, US
  7018        2568      24150    1572  ATT-INTERNET4, US
396982        2552       3479     345  GOOGLE-CLOUD-PLATFORM, US

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

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6885       1730     144  UNI2-AS, ES
  9121        6830       1692      17  TTNET, TR
 20940        4111       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3991        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2947       2290     913  ROSTELECOM-AS, RU
  9009        2621        252    1347  M247, RO
  6849        2488        339      20  UKRTELNET, UA
 34984        2243        357     616  TELLCOM-AS, TR
 47331        2074        323    1578  TTNET, TR

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       10888       3339     596  Uninet S.A. de C.V., MX
 10620        3470        510     844  Telmex Colombia S.A., CO
 11830        2301        369      64  Instituto Costarricense de Electricidad
 13999        2056        335     528  Mega Cable, S.A. de C.V., MX
 28573        1351       2328     265  Claro NXT Telecomunicacoes Ltda, BR
  6503        1294        338     520  Axtel, S.A.B. de C.V., MX
  3816        1285        722     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1088        181     463  Techtel LMDS Comunicaciones Interactiva
  6147        1084        369      22  Telefonica del Peru S.A.A., PE
 26615         986       2466      43  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        1569        393      21  LINKdotNET-AS, EG
 24835        1518        521      31  RAYA-AS, EG
 36992        1349       1519     270  ETISALAT-MISR, EG
 36903        1260        550      99  MT-MPLS, MA
 29571        1015         68      32  ORANGE-COTE-IVOIRE, CI
 36935         815        520      42  Vodafone-, EG
  6713         613       1863      34  IAM-AS, MA
 15399         526         53      42  WANANCHI-, KE
 37342         488         32       1  MOVITEL, MZ
 23889         400        231      14  MauritiusTelecom, MU

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       10888       3339     596  Uninet S.A. de C.V., MX
  9808        9071       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7342      10579    2894  AMAZON-02, US
 12479        6885       1730     144  UNI2-AS, ES
  9121        6830       1692      17  TTNET, TR
  7545        5928        786     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4723       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4603        305     518  CABLEONE, US
 20940        4111       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA

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

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9071         9021  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6830         6813  TTNET, TR
 12479        6885         6741  UNI2-AS, ES
  7545        5928         5234  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4723         4648  ERX-CERNET-BKB China Education and Research Net
 16509        7342         4448  AMAZON-02, US
 11492        4603         4085  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3991         3952  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4111         3929  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
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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
23.133.252.0/24      Origin:     54681  ROSETEL, US
23.133.252.0/24     Transit:     50058  August Internet, GB
23.133.253.0/24      Origin:     54681  ROSETEL, US
23.133.253.0/24     Transit:     50058  August Internet, GB
23.133.254.0/24      Origin:     54681  ROSETEL, US
23.133.254.0/24     Transit:     50058  August Internet, GB
23.133.255.0/24      Origin:     54681  ROSETEL, US
23.133.255.0/24     Transit:     50058  August Internet, GB
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

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       /9:13      /10:39      /11:100     /12:294     
/13:589     /14:1202    /15:2045    /16:13520   /17:8362    /18:13955   
/19:25182   /20:44418   /21:52312   /22:109576  /23:97648   /24:542285  
/25:784     /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
  9121        5979        6830  TTNET, TR
 12479        5895        6885  UNI2-AS, ES
  8151        4774       10888  Uninet S.A. de C.V., MX
 11492        3510        4603  CABLEONE, US
  8551        3455        3991  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3300        3491  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2987        3898  VIASAT-SP-BACKBONE, US
 22773        2787        3781  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2345        2488  UKRTELNET, UA

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

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

   1:1910      2:1030      3:166       4:5         5:3940      6:116    
   7:6         8:1592      9:1        11:173      12:1623     13:338    
  14:2376     15:270      16:69       17:362      18:338      20:241    
  21:4        22:188      23:5958     24:2473     25:6        27:2664   
  29:19       31:2448     32:94       34:7        35:90       36:1867   
  37:4483     38:3639     39:753      40:159      41:3940     42:1181   
  43:2293     44:296      45:16213    46:4219     47:385      49:1721   
  50:1933     51:242      52:1489     54:383      55:842      56:8      
  57:77       58:1790     59:1159     60:990      61:2385     62:2544   
  63:1963     64:5627     65:2318     66:4853     67:2961     68:1320   
  69:4169     70:1305     71:679      72:2995     74:2654     75:1476   
  76:595      77:2239     78:3963     79:3145     80:2035     81:1810   
  82:1531     83:1221     84:1422     85:3733     86:729      87:1916   
  88:2838     89:3436     90:544      91:7595     92:2059     93:2549   
  94:3520     95:4783     96:1347     97:344      98:1166     99:737    
 100:78      101:1065    102:2331    103:30264   104:4554    105:474    
 106:887     107:2535    108:899     109:4347    110:2012    111:3323   
 112:2047    113:1552    114:1524    115:2021    116:1921    117:2483   
 118:2324    119:1854    120:1738    121:1081    122:2548    123:2112   
 124:1555    125:2188    128:1242    129:979     130:969     131:2014   
 132:829     133:377     134:1908    135:289     136:877     137:888    
 138:2535    139:1517    140:1122    141:1481    142:1385    143:1394   
 144:1198    145:348     146:1869    147:1538    148:2256    149:1793   
 150:879     151:1117    152:1831    153:469     154:3865    155:1423   
 156:1688    157:1292    158:1046    159:2177    160:2563    161:1370   
 162:3517    163:1424    164:1671    165:1652    166:812     167:1711   
 168:3805    169:882     170:4534    171:853     172:3454    173:3107   
 174:1026    175:1143    176:3581    177:4718    178:3551    179:2098   
 180:2339    181:3269    182:3248    183:1936    184:2355    185:19826  
 186:4553    187:3961    188:4048    189:3451    190:8996    191:1441   
 192:11005   193:8741    194:7158    195:5058    196:2975    197:2452   
 198:6018    199:6058    200:7623    201:5826    202:10551   203:10035  
 204:4562    205:3498    206:3892    207:3430    208:4097    209:4771   
 210:4337    211:2433    212:4049    213:3552    214:1090    215:53     
 216:6463    217:2611    218:1294    219:570     220:2044    221:924    
 222:824     223:2009   

End of report


More information about the sanog mailing list