[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Ven 1 Oct 18:03:30 UTC 2021


This is an automated weekly mailing describing the state of the Internet
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 http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Global IPv4 Routing Table Report   04:00 +10GMT Sat 02 Oct, 2021

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              864928
    Prefixes after maximum aggregation (per Origin AS):          327395
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      416427
Total ASes present in the Internet Routing Table:                 71992
    Prefixes per ASN:                                             12.01
Origin-only ASes present in the Internet Routing Table:           61880
Origin ASes announcing only one prefix:                           25516
Transit ASes present in the Internet Routing Table:               10112
Transit-only ASes present in the Internet Routing Table:            339
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      38
    Max AS path prepend of ASN ( 37447)                              35
Prefixes from unregistered ASNs in the Routing Table:               900
    Number of instances of unregistered ASNs:                       906
Number of 32-bit ASNs allocated by the RIRs:                      37393
Number of 32-bit ASNs visible in the Routing Table:               31025
Prefixes from 32-bit ASNs in the Routing Table:                  144330
Number of bogon 32-bit ASNs visible in the Routing Table:            34
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            452
Number of addresses announced to Internet:                   3068651008
    Equivalent to 182 /8s, 231 /16s and 230 /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:      287757

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

Prefixes being announced by APNIC Region ASes:                   231738
    Total APNIC prefixes after maximum aggregation:               66212
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          227075
    Unique aggregates announced from the APNIC address blocks:    91937
APNIC Region origin ASes present in the Internet Routing Table:   11991
    APNIC Prefixes per ASN:                                       18.94
APNIC Region origin ASes announcing only one prefix:               3418
APNIC Region transit ASes present in the Internet Routing Table:   1671
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         37
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7148
Number of APNIC addresses announced to Internet:              772173696
    Equivalent to 46 /8s, 6 /16s and 111 /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, 131072-147769
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:                    252764
    Total ARIN prefixes after maximum aggregation:               115758
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           252694
    Unique aggregates announced from the ARIN address blocks:    120568
ARIN Region origin ASes present in the Internet Routing Table:    18899
    ARIN Prefixes per ASN:                                        13.37
ARIN Region origin ASes announcing only one prefix:                6867
ARIN Region transit ASes present in the Internet Routing Table:    1951
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          28
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4130
Number of ARIN addresses announced to Internet:              1300138752
    Equivalent to 77 /8s, 126 /16s and 139 /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:                    241282
    Total RIPE prefixes after maximum aggregation:               112897
    RIPE Deaggregation factor:                                     2.14
Prefixes being announced from the RIPE address blocks:           237443
    Unique aggregates announced from the RIPE address blocks:    145240
RIPE Region origin ASes present in the Internet Routing Table:    28049
    RIPE Prefixes per ASN:                                         8.47
RIPE Region origin ASes announcing only one prefix:               12068
RIPE Region transit ASes present in the Internet Routing Table:    3898
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          29
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10427
Number of RIPE addresses announced to Internet:               711382656
    Equivalent to 42 /8s, 102 /16s and 214 /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:                  111765
    Total LACNIC prefixes after maximum aggregation:              26637
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:         112683
    Unique aggregates announced from the LACNIC address blocks:   47245
LACNIC Region origin ASes present in the Internet Routing Table:  10781
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2622
LACNIC Region transit ASes present in the Internet Routing Table:  2123
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        29
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8444
Number of LACNIC addresses announced to Internet:             176435200
    Equivalent to 10 /8s, 132 /16s and 48 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + 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:                  26479
    Total AfriNIC prefixes after maximum aggregation:              5191
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         34581
    Unique aggregates announced from the AfriNIC address blocks:  11037
AfriNIC Region origin ASes present in the Internet Routing Table:  1546
    AfriNIC Prefixes per ASN:                                     22.37
AfriNIC Region origin ASes announcing only one prefix:              541
AfriNIC Region transit ASes present in the Internet Routing Table:  302
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       38
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  876
Number of AfriNIC addresses announced to Internet:            108194560
    Equivalent to 6 /8s, 114 /16s and 235 /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        8042       9000      57  CMNET-GD Guangdong Mobile Communication
  7545        5826        786     677  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4713       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3612       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3515       1022      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3012       1897      56  VNPT-AS-VN VNPT Corp, VN
  4766        2495      11119     576  KIXS-AS-KR Korea Telecom, KR
  9498        2170        472     237  BBIL-AP BHARTI Airtel Ltd., IN
  4755        2127        438     203  TATACOMM-AS TATA Communications formerl
 45090        2127       1198      75  CNNIC-TENCENT-NET-AP Shenzhen Tencent C

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        5657       9780    2489  AMAZON-02, US
 11492        4706        311     750  CABLEONE, US
 22773        4028       3042     318  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3947        264      30  VIASAT-SP-BACKBONE, US
 16625        3600       1861    2514  AKAMAI-AS, US
  6327        3369       1318      66  SHAW, CA
 30036        2589        374     168  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2530       5028     450  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2242       3032     505  CHARTER-20115, US
  7018        2227      24176    1421  ATT-INTERNET4, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6858       1726     143  UNI2-AS, ES
 20940        3848       3348     216  AKAMAI-ASN1, NL
  8551        3289        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3269        187      23  ALJAWWALSTC-AS, SA
 12389        2913       2279     895  ROSTELECOM-AS, RU
  9009        2492        259    1310  M247, GB
 34984        2229        358     602  TELLCOM-AS, TR
 58224        1667        897     579  TCI, IR
 61317        1645        256     920  ASDETUK www.heficed.com, GB
 13188        1610        100      27  TRIOLAN, UA

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8866       3457     570  Uninet S.A. de C.V., MX
 10620        3410        520     699  Telmex Colombia S.A., CO
 11830        2495        369      62  Instituto Costarricense de Electricidad
 13999        1696        358     464  Mega Cable, S.A. de C.V., MX
  6503        1516        359     477  Axtel, S.A.B. de C.V., MX
 28573        1462       2307     241  CLARO S.A., BR
  3816        1241        652     151  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1148       2351     136  TIM SA, BR
  6147        1089        370      22  Telefonica del Peru S.A.A., PE
 11172         957        111      70  Alestra, S. de R.L. de C.V., MX

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1639        393      21  LINKdotNET-AS, EG
 24835        1549        503      32  RAYA-AS, EG
 36992        1283       1417     269  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         799         68      11  ORANGE-COTE-IVOIRE, CI
  6713         611       1863      34  IAM-AS, MA
 36935         607        522      40  Vodafone-, EG
 15399         505         50      30  WANANCHI-, KE
 37342         471         32       1  MOVITEL, MZ
  2018         338        319      73  TENET-1, ZA

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8866       3457     570  Uninet S.A. de C.V., MX
  9808        8042       9000      57  CMNET-GD Guangdong Mobile Communication
 12479        6858       1726     143  UNI2-AS, ES
  7545        5826        786     677  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5657       9780    2489  AMAZON-02, US
  4538        4713       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4706        311     750  CABLEONE, US
 22773        4028       3042     318  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3947        264      30  VIASAT-SP-BACKBONE, US
 20940        3848       3348     216  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        8042         7985  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6858         6715  UNI2-AS, ES
  7545        5826         5149  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4713         4639  ERX-CERNET-BKB China Education and Research Net
 11492        4706         3956  CABLEONE, US
  7155        3947         3917  VIASAT-SP-BACKBONE, US
 22773        4028         3710  ASN-CXA-ALL-CCI-22773-RDC, US
 20940        3848         3632  AKAMAI-ASN1, NL
  7552        3612         3592  VIETEL-AS-AP Viettel Group, VN
  7713        3515         3459  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID

Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     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              174  COGENT-174, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
      1782  UNALLOCATED  8.42.19.0/24             46887  LIGHTOWER, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, US
     32306  UNALLOCATED  8.46.80.0/24             33652  CMCS, US

Complete listing at http://thyme.rand.apnic.net/current/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.132.208.0/24      Origin:      7850  CITYLINKFIBER, US
23.132.208.0/24     Transit:     15164  UPNLLC, 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:       174  COGENT-174, US
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW

Complete listing at http://thyme.rand.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      /10:41      /11:101     /12:304     
/13:597     /14:1213    /15:2040    /16:13596   /17:8317    /18:14098   
/19:25517   /20:42653   /21:50989   /22:106842  /23:92430   /24:504709  
/25:1452    /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        5810        6858  UNI2-AS, ES
 11492        3645        4706  CABLEONE, US
  8151        3240        8866  Uninet S.A. de C.V., MX
  6327        3176        3369  SHAW, CA
  7155        3037        3947  VIASAT-SP-BACKBONE, US
 22773        2988        4028  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2805        3269  ALJAWWALSTC-AS, SA
  8551        2755        3289  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2242        2589  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1929        2495  Instituto Costarricense de Electricidad y Telec

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

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

   1:1927      2:1071      3:145       4:20        5:3713      6:85     
   7:5         8:1546      9:1        11:172      12:1723     13:390    
  14:2274     15:113      16:24       17:364      18:120      20:126    
  21:4        22:188      23:5153     24:2447     25:2        27:2544   
  29:19       31:2347     32:112      34:1        35:47       36:1725   
  37:3926     38:2259     39:599      40:166      41:3818     42:1015   
  43:2063     44:288      45:15511    46:3733     47:320      48:5      
  49:1666     50:1819     51:99       52:1286     54:250      55:738    
  56:4        57:54       58:1740     59:1183     60:931      61:2291   
  62:2275     63:1966     64:5368     65:2360     66:4970     67:2873   
  68:1161     69:4125     70:1361     71:677      72:3150     74:2618   
  75:1490     76:694      77:2024     78:1700     79:2621     80:1875   
  81:1546     82:1386     83:1155     84:1291     85:2923     86:716    
  87:1841     88:1016     89:3002     90:505      91:7385     92:1848   
  93:2549     94:3165     95:3511     96:1305     97:346      98:975    
  99:958     100:75      101:1039    102:1701    103:26991   104:4017   
 105:438     106:821     107:2349    108:727     109:3870    110:2038   
 111:3124    112:1937    113:1408    114:1466    115:1931    116:1846   
 117:2412    118:2310    119:1891    120:1561    121:1082    122:2545   
 123:2164    124:1594    125:2055    128:1366    129:1323    130:893    
 131:2026    132:778     133:362     134:1861    135:316     136:787    
 137:855     138:2399    139:1186    140:755     141:1230    142:1204   
 143:1370    144:1269    145:325     146:1546    147:1412    148:2164   
 149:1502    150:824     151:1087    152:1644    153:428     154:3109   
 155:1340    156:1881    157:1239    158:1003    159:2032    160:2376   
 161:1252    162:3387    163:1102    164:1553    165:1443    166:590    
 167:1652    168:3659    169:683     170:4347    171:806     172:2743   
 173:2948    174:1001    175:1118    176:3316    177:4481    178:3003   
 179:1895    180:2257    181:2663    182:3111    183:2011    184:2423   
 185:18892   186:4253    187:3146    188:3396    189:2891    190:8654   
 191:1327    192:10702   193:8351    194:6816    195:4865    196:2897   
 197:2123    198:6015    199:5939    200:7338    201:5488    202:10514  
 203:10060   204:4503    205:3368    206:3793    207:3367    208:4020   
 209:4738    210:4184    211:2359    212:3768    213:3391    214:1168   
 215:64      216:6373    217:2600    218:1218    219:670     220:1946   
 221:977     222:855     223:2049   

End of report


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