[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Ven 18 Mar 18:03:01 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 19 Mar, 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:                              893722
    Prefixes after maximum aggregation (per Origin AS):          336639
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      429362
Total ASes present in the Internet Routing Table:                 72897
    Prefixes per ASN:                                             12.26
Origin-only ASes present in the Internet Routing Table:           62565
Origin ASes announcing only one prefix:                           25680
Transit ASes present in the Internet Routing Table:               10332
Transit-only ASes present in the Internet Routing Table:            379
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      53
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               912
    Number of instances of unregistered ASNs:                       921
Number of 32-bit ASNs allocated by the RIRs:                      38812
Number of 32-bit ASNs visible in the Routing Table:               32314
Prefixes from 32-bit ASNs in the Routing Table:                  151357
Number of bogon 32-bit ASNs visible in the Routing Table:            32
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            510
Number of addresses announced to Internet:                   3068411904
    Equivalent to 182 /8s, 228 /16s and 64 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      303150

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

Prefixes being announced by APNIC Region ASes:                   233925
    Total APNIC prefixes after maximum aggregation:               66327
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          228912
    Unique aggregates announced from the APNIC address blocks:    94588
APNIC Region origin ASes present in the Internet Routing Table:   12486
    APNIC Prefixes per ASN:                                       18.33
APNIC Region origin ASes announcing only one prefix:               3554
APNIC Region transit ASes present in the Internet Routing Table:   1720
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         29
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7686
Number of APNIC addresses announced to Internet:              774245760
    Equivalent to 46 /8s, 38 /16s and 13 /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:                    260871
    Total ARIN prefixes after maximum aggregation:               119697
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           260758
    Unique aggregates announced from the ARIN address blocks:    124070
ARIN Region origin ASes present in the Internet Routing Table:    18990
    ARIN Prefixes per ASN:                                        13.73
ARIN Region origin ASes announcing only one prefix:                6894
ARIN Region transit ASes present in the Internet Routing Table:    1964
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          28
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4399
Number of ARIN addresses announced to Internet:              1295848960
    Equivalent to 77 /8s, 61 /16s and 22 /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:                    256192
    Total RIPE prefixes after maximum aggregation:               117094
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           253439
    Unique aggregates announced from the RIPE address blocks:    150184
RIPE Region origin ASes present in the Internet Routing Table:    28118
    RIPE Prefixes per ASN:                                         9.01
RIPE Region origin ASes announcing only one prefix:               12042
RIPE Region transit ASes present in the Internet Routing Table:    3970
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          31
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10664
Number of RIPE addresses announced to Internet:               714103680
    Equivalent to 42 /8s, 144 /16s and 91 /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:                  114231
    Total LACNIC prefixes after maximum aggregation:              27446
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         114217
    Unique aggregates announced from the LACNIC address blocks:   48188
LACNIC Region origin ASes present in the Internet Routing Table:  10929
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2627
LACNIC Region transit ASes present in the Internet Routing Table:  2203
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        53
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8619
Number of LACNIC addresses announced to Internet:             176277248
    Equivalent to 10 /8s, 129 /16s and 199 /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:                  27591
    Total AfriNIC prefixes after maximum aggregation:              5397
    AfriNIC Deaggregation factor:                                  5.11
Prefixes being announced from the AfriNIC address blocks:         35886
    Unique aggregates announced from the AfriNIC address blocks:  11899
AfriNIC Region origin ASes present in the Internet Routing Table:  1613
    AfriNIC Prefixes per ASN:                                     22.25
AfriNIC Region origin ASes announcing only one prefix:              563
AfriNIC Region transit ASes present in the Internet Routing Table:  319
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  946
Number of AfriNIC addresses announced to Internet:            107632640
    Equivalent to 6 /8s, 106 /16s and 88 /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        9117       8886      46  CHINAMOBILE-CN China Mobile Communicati
  7545        5894        788     697  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3602       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3487       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3435       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2499      11121     602  KIXS-AS-KR Korea Telecom, KR
  9498        2386        475     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2146       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2109        429     197  TATACOMM-AS TATA Communications formerl

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        6301      10248    2649  AMAZON-02, US
 11492        4455        295     726  CABLEONE, US
 22773        3944       3060     368  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3895        263      26  VIASAT-SP-BACKBONE, US
 16625        3654       1883    2572  AKAMAI-AS, US
  6327        3412       1318      62  SHAW, CA
   749        2883      50780    2139  DNIC-AS-00749, US
 30036        2612        374     163  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2518       4962     428  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2255       3042     499  CHARTER-20115, 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        6817       1730     149  UNI2-AS, ES
  9121        6703       1692      17  TTNET, TR
  8551        4012        378      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3945       3349     220  AKAMAI-ASN1, NL
 39891        3818        220      33  ALJAWWALSTC-AS, SA
 12389        2959       2274     909  ROSTELECOM-AS, RU
  6849        2803        355      21  UKRTELNET, UA
  9009        2468        248    1285  M247, GB
 34984        2198        355     622  TELLCOM-AS, TR
 47331        2087        329    1597  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       10485       3427     552  Uninet S.A. de C.V., MX
 10620        3473        519     715  Telmex Colombia S.A., CO
 11830        2431        369      62  Instituto Costarricense de Electricidad
 13999        1709        292     474  Mega Cable, S.A. de C.V., MX
  6503        1446        354     524  Axtel, S.A.B. de C.V., MX
 28573        1396       2332     248  CLARO S.A., BR
  3816        1254        666     146  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1091        370      21  Telefonica del Peru S.A.A., PE
 26615        1047       2349     136  TIM SA, BR
 11664        1008        192     446  Techtel LMDS Comunicaciones Interactiva

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        1584        393      21  LINKdotNET-AS, EG
 24835        1545        523      32  RAYA-AS, EG
 36992        1300       1518     262  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         908         64      62  ORANGE-COTE-IVOIRE, CI
 36935         729        521      40  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         514         51      34  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
 23889         422        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       10485       3427     552  Uninet S.A. de C.V., MX
  9808        9117       8886      46  CHINAMOBILE-CN China Mobile Communicati
 12479        6817       1730     149  UNI2-AS, ES
  9121        6703       1692      17  TTNET, TR
 16509        6301      10248    2649  AMAZON-02, US
  7545        5894        788     697  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4455        295     726  CABLEONE, US
  8551        4012        378      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3945       3349     220  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        9117         9071  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6703         6686  TTNET, TR
 12479        6817         6668  UNI2-AS, ES
  7545        5894         5197  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708         4634  ERX-CERNET-BKB China Education and Research Net
  8551        4012         3974  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3895         3869  VIASAT-SP-BACKBONE, US
 39891        3818         3785  ALJAWWALSTC-AS, SA
 11492        4455         3729  CABLEONE, US
 20940        3945         3725  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  5.104.72.0/24           399587  UT, US
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, 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
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             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
23.133.168.0/24      Origin:    400442  VULPINE-AS-01, CA
23.133.168.0/24     Transit:     21700  NEPTUNE-NETWORKS, US
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

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      /11:102     /12:305     
/13:588     /14:1205    /15:2042    /16:13573   /17:8317    /18:13893   
/19:25167   /20:43310   /21:52283   /22:108378  /23:95482   /24:528212  
/25:796     /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        5850        6703  TTNET, TR
 12479        5794        6817  UNI2-AS, ES
  8151        4140       10485  Uninet S.A. de C.V., MX
  8551        3477        4012  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3368        4455  CABLEONE, US
  6327        3224        3412  SHAW, CA
 39891        3130        3818  ALJAWWALSTC-AS, SA
  7155        2988        3895  VIASAT-SP-BACKBONE, US
 22773        2935        3944  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2658        2803  UKRTELNET, UA

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

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

   1:1841      2:1064      3:154       4:7         5:3782      6:112    
   7:5         8:1563      9:1        11:172      12:1714     13:303    
  14:2389     15:179      16:42       17:375      18:147      20:194    
  21:4        22:188      23:5542     24:2342     25:6        27:2605   
  29:19       31:2418     32:96       34:1        35:66       36:1751   
  37:4387     38:2651     39:699      40:150      41:3914     42:999    
  43:2093     44:292      45:16077    46:4124     47:348      49:1667   
  50:1937     51:107      52:1373     53:1        54:358      55:772    
  56:8        57:58       58:1807     59:1198     60:966      61:2270   
  62:2462     63:1942     64:5523     65:2308     66:4864     67:2965   
  68:1174     69:4155     70:1350     71:660      72:3076     74:2669   
  75:1423     76:716      77:2104     78:3888     79:3098     80:1960   
  81:1700     82:1479     83:1216     84:1344     85:3644     86:719    
  87:1969     88:2674     89:3242     90:514      91:7611     92:2011   
  93:2592     94:3491     95:4763     96:1310     97:347      98:988    
  99:865     100:75      101:1035    102:1983    103:28696   104:4274   
 105:469     106:853     107:2505    108:795     109:4214    110:2073   
 111:3286    112:2008    113:1525    114:1490    115:1958    116:1905   
 117:2515    118:2271    119:1866    120:1673    121:1062    122:2550   
 123:2116    124:1612    125:2110    128:1176    129:1195    130:916    
 131:2072    132:760     133:373     134:1935    135:290     136:878    
 137:874     138:2431    139:1270    140:1132    141:1378    142:1283   
 143:1478    144:1238    145:345     146:1776    147:1483    148:2208   
 149:1635    150:855     151:1077    152:1825    153:458     154:3669   
 155:1444    156:1897    157:1237    158:1028    159:2075    160:2421   
 161:1322    162:3452    163:1229    164:1653    165:1605    166:682    
 167:1718    168:3757    169:698     170:4448    171:821     172:3056   
 173:3075    174:1022    175:1128    176:3508    177:4565    178:3443   
 179:1975    180:2274    181:2941    182:3260    183:1946    184:2388   
 185:19422   186:4324    187:3667    188:3864    189:3088    190:8847   
 191:1307    192:11068   193:8562    194:6964    195:4967    196:2937   
 197:2356    198:6015    199:6035    200:7514    201:5670    202:10508  
 203:10028   204:4548    205:3380    206:3759    207:3400    208:4038   
 209:4640    210:4258    211:2436    212:3997    213:3391    214:1162   
 215:67      216:6427    217:2639    218:1257    219:597     220:1950   
 221:983     222:849     223:2140   

End of report


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