[afnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Aug 12 18:02:53 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 13 Aug, 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:                              906415
    Prefixes after maximum aggregation (per Origin AS):          341627
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      438270
Total ASes present in the Internet Routing Table:                 73570
    Prefixes per ASN:                                             12.32
Origin-only ASes present in the Internet Routing Table:           63137
Origin ASes announcing only one prefix:                           25993
Transit ASes present in the Internet Routing Table:               10433
Transit-only ASes present in the Internet Routing Table:            394
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:               976
    Number of instances of unregistered ASNs:                       976
Number of 32-bit ASNs allocated by the RIRs:                      39963
Number of 32-bit ASNs visible in the Routing Table:               33196
Prefixes from 32-bit ASNs in the Routing Table:                  158224
Number of bogon 32-bit ASNs visible in the Routing Table:            12
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            512
Number of addresses announced to Internet:                   3071462016
    Equivalent to 183 /8s, 18 /16s and 202 /24s
    Percentage of available address space announced:               83.0
    Percentage of allocated address space announced:               83.0
    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:      307865

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

Prefixes being announced by APNIC Region ASes:                   236418
    Total APNIC prefixes after maximum aggregation:               67273
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          231493
    Unique aggregates announced from the APNIC address blocks:    96306
APNIC Region origin ASes present in the Internet Routing Table:   12876
    APNIC Prefixes per ASN:                                       17.98
APNIC Region origin ASes announcing only one prefix:               3730
APNIC Region transit ASes present in the Internet Routing Table:   1756
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8107
Number of APNIC addresses announced to Internet:              773195776
    Equivalent to 46 /8s, 22 /16s and 8 /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:                    264514
    Total ARIN prefixes after maximum aggregation:               120926
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           264776
    Unique aggregates announced from the ARIN address blocks:    127575
ARIN Region origin ASes present in the Internet Routing Table:    19055
    ARIN Prefixes per ASN:                                        13.90
ARIN Region origin ASes announcing only one prefix:                6929
ARIN Region transit ASes present in the Internet Routing Table:    1917
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:    4588
Number of ARIN addresses announced to Internet:              1295966720
    Equivalent to 77 /8s, 62 /16s and 226 /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:                    260316
    Total RIPE prefixes after maximum aggregation:               119284
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           257614
    Unique aggregates announced from the RIPE address blocks:    153269
RIPE Region origin ASes present in the Internet Routing Table:    28202
    RIPE Prefixes per ASN:                                         9.13
RIPE Region origin ASes announcing only one prefix:               12086
RIPE Region transit ASes present in the Internet Routing Table:    4009
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10794
Number of RIPE addresses announced to Internet:               717796224
    Equivalent to 42 /8s, 200 /16s and 179 /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:                  116177
    Total LACNIC prefixes after maximum aggregation:              27812
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         115871
    Unique aggregates announced from the LACNIC address blocks:   48885
LACNIC Region origin ASes present in the Internet Routing Table:  10980
    LACNIC Prefixes per ASN:                                      10.55
LACNIC Region origin ASes announcing only one prefix:              2666
LACNIC Region transit ASes present in the Internet Routing Table:  2246
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8709
Number of LACNIC addresses announced to Internet:             176389120
    Equivalent to 10 /8s, 131 /16s and 124 /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:                  28014
    Total AfriNIC prefixes after maximum aggregation:              5577
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         36149
    Unique aggregates announced from the AfriNIC address blocks:  11797
AfriNIC Region origin ASes present in the Internet Routing Table:  1668
    AfriNIC Prefixes per ASN:                                     21.67
AfriNIC Region origin ASes announcing only one prefix:              582
AfriNIC Region transit ASes present in the Internet Routing Table:  323
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  998
Number of AfriNIC addresses announced to Internet:            107817216
    Equivalent to 6 /8s, 109 /16s and 41 /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        9081       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5912        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3604       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3508       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3377       1877      67  VNPT-AS-VN VNPT Corp, VN
  4766        2501      11125     603  KIXS-AS-KR Korea Telecom, KR
  9498        2426        499     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2176       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
 24560        2158        851     404  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        6859      10405    2726  AMAZON-02, US
 11492        4549        301     570  CABLEONE, US
  7155        3906        265      32  VIASAT-SP-BACKBONE, US
 22773        3842       3069     363  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3477       1791    2508  AKAMAI-AS, US
  6327        3448       1319      62  SHAW, CA
   749        3029      50730    2287  DNIC-AS-00749, US
 30036        2604        371     288  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2523       3384     360  GOOGLE-CLOUD-PLATFORM, US
   209        2370       4936     407  CENTURYLINK-US-LEGACY-QWEST, 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        6858       1730     144  UNI2-AS, ES
  9121        6608       1692      17  TTNET, TR
 20940        4052       3348     219  AKAMAI-ASN1, NL
 39891        4006        234      46  ALJAWWALSTC-AS, SA
  8551        3992        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     911  ROSTELECOM-AS, RU
  6849        2755        355      21  UKRTELNET, UA
  9009        2604        254    1333  M247, GB
 34984        2247        358     630  TELLCOM-AS, TR
 47331        2063        324    1563  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       10834       3399     557  Uninet S.A. de C.V., MX
 10620        3486        515     778  Telmex Colombia S.A., CO
 11830        2384        369      64  Instituto Costarricense de Electricidad
 13999        1952        320     521  Mega Cable, S.A. de C.V., MX
 28573        1361       2329     265  Claro NXT Telecomunicacoes Ltda, BR
  6503        1288        338     520  Axtel, S.A.B. de C.V., MX
  3816        1272        697     155  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1106        369      21  Telefonica del Peru S.A.A., PE
 11664        1046        176     460  Techtel LMDS Comunicaciones Interactiva
 26615         976       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
 24835        1546        521      31  RAYA-AS, EG
 24863        1542        393      21  LINKdotNET-AS, EG
 36992        1324       1519     268  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         976         66      52  ORANGE-COTE-IVOIRE, CI
 36935         801        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         519         52      39  WANANCHI-, KE
 37342         481         32       1  MOVITEL, MZ
 23889         401        232      16  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       10834       3399     557  Uninet S.A. de C.V., MX
  9808        9081       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        6859      10405    2726  AMAZON-02, US
 12479        6858       1730     144  UNI2-AS, ES
  9121        6608       1692      17  TTNET, TR
  7545        5912        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4549        301     570  CABLEONE, US
 20940        4052       3348     219  AKAMAI-ASN1, NL
 39891        4006        234      46  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        9081         9031  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6858         6714  UNI2-AS, ES
  9121        6608         6591  TTNET, TR
  7545        5912         5213  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708         4633  ERX-CERNET-BKB China Education and Research Net
 16509        6859         4133  AMAZON-02, US
 11492        4549         3979  CABLEONE, US
 39891        4006         3960  ALJAWWALSTC-AS, SA
  8551        3992         3953  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3906         3874  VIASAT-SP-BACKBONE, 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
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, 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
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     18798  UNALLOCATED  8.40.106.0/24             6461  ZAYO-6461, US
    394856  UNALLOCATED  8.40.216.0/24             3356  LEVEL3, 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
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, 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
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW
41.57.124.0/24       Origin:     37442  UNASSIGNED
41.57.124.0/24      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       /9:13      /10:40      /11:101     /12:303     
/13:595     /14:1209    /15:2065    /16:13536   /17:8326    /18:13926   
/19:25105   /20:44437   /21:52302   /22:109236  /23:97011   /24:537393  
/25:801     /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        5845        6858  UNI2-AS, ES
  9121        5766        6608  TTNET, TR
  8151        4556       10834  Uninet S.A. de C.V., MX
 11492        3464        4549  CABLEONE, US
  8551        3455        3992  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3260        3448  SHAW, CA
 39891        3189        4006  ALJAWWALSTC-AS, SA
  7155        2995        3906  VIASAT-SP-BACKBONE, US
 22773        2853        3842  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2613        2755  UKRTELNET, UA

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

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

   1:1963      2:1024      3:157       4:5         5:3869      6:111    
   7:6         8:1576      9:1        11:173      12:1647     13:338    
  14:2366     15:242      16:44       17:383      18:189      20:242    
  21:4        22:188      23:5854     24:2417     25:6        27:2608   
  29:19       31:2418     32:95       34:7        35:87       36:1821   
  37:4448     38:3393     39:722      40:152      41:3878     42:1138   
  43:2202     44:289      45:16087    46:4157     47:332      49:1695   
  50:1944     51:237      52:1459     54:385      55:847      56:8      
  57:58       58:1792     59:1169     60:964      61:2288     62:2543   
  63:1930     64:5576     65:2376     66:4875     67:2984     68:1207   
  69:4153     70:1316     71:682      72:3043     74:2643     75:1398   
  76:583      77:2247     78:3948     79:3127     80:2013     81:1792   
  82:1500     83:1212     84:1380     85:3710     86:744      87:1911   
  88:2823     89:3406     90:547      91:7646     92:2042     93:2544   
  94:3514     95:4795     96:1296     97:350      98:1023     99:736    
 100:77      101:1063    102:2209    103:29605   104:4548    105:467    
 106:874     107:2548    108:868     109:4331    110:2005    111:3328   
 112:2043    113:1537    114:1483    115:2010    116:1912    117:2448   
 118:2303    119:1845    120:1785    121:1077    122:2518    123:2078   
 124:1578    125:2107    128:1245    129:1047    130:974     131:2073   
 132:781     133:378     134:1942    135:298     136:856     137:871    
 138:2506    139:1507    140:939     141:1446    142:1332    143:1408   
 144:1199    145:341     146:1855    147:1509    148:2216    149:1766   
 150:863     151:1070    152:1868    153:464     154:3682    155:1456   
 156:1740    157:1271    158:1036    159:2207    160:2500    161:1321   
 162:3493    163:1347    164:1644    165:1632    166:783     167:1755   
 168:3852    169:880     170:4536    171:841     172:3324    173:3125   
 174:1037    175:1137    176:3657    177:4781    178:3544    179:2178   
 180:2335    181:3245    182:3235    183:1937    184:2379    185:19618  
 186:4482    187:3839    188:4000    189:3384    190:8962    191:1448   
 192:10967   193:8683    194:7097    195:5074    196:2950    197:2408   
 198:6011    199:6034    200:7602    201:5806    202:10493   203:10035  
 204:4514    205:3421    206:3769    207:3439    208:4042    209:4697   
 210:4367    211:2407    212:4078    213:3473    214:1129    215:65     
 216:6396    217:2642    218:1286    219:574     220:2014    221:951    
 222:827     223:1999   

End of report



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