[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 10 18:03:21 UTC 2021


This is an automated weekly mailing describing the state of the Internet
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>.

Routing Table Report   04:00 +10GMT Sat 11 Sep, 2021

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

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

BGP routing table entries examined:                              861637
    Prefixes after maximum aggregation (per Origin AS):          326121
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      414174
Total ASes present in the Internet Routing Table:                 71910
    Prefixes per ASN:                                             11.98
Origin-only ASes present in the Internet Routing Table:           61801
Origin ASes announcing only one prefix:                           25551
Transit ASes present in the Internet Routing Table:               10109
Transit-only ASes present in the Internet Routing Table:            329
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      37
    Max AS path prepend of ASN (141827)                              33
Prefixes from unregistered ASNs in the Routing Table:               967
    Number of instances of unregistered ASNs:                       974
Number of 32-bit ASNs allocated by the RIRs:                      37182
Number of 32-bit ASNs visible in the Routing Table:               30868
Prefixes from 32-bit ASNs in the Routing Table:                  143537
Number of bogon 32-bit ASNs visible in the Routing Table:            37
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            470
Number of addresses announced to Internet:                   3039121536
    Equivalent to 181 /8s, 37 /16s and 80 /24s
    Percentage of available address space announced:               82.1
    Percentage of allocated address space announced:               82.1
    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:      286233

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

Prefixes being announced by APNIC Region ASes:                   231597
    Total APNIC prefixes after maximum aggregation:               66091
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          227042
    Unique aggregates announced from the APNIC address blocks:    90918
APNIC Region origin ASes present in the Internet Routing Table:   11927
    APNIC Prefixes per ASN:                                       19.04
APNIC Region origin ASes announcing only one prefix:               3390
APNIC Region transit ASes present in the Internet Routing Table:   1668
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         37
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7082
Number of APNIC addresses announced to Internet:              773837568
    Equivalent to 46 /8s, 31 /16s and 211 /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:                    251817
    Total ARIN prefixes after maximum aggregation:               115198
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           251659
    Unique aggregates announced from the ARIN address blocks:    119787
ARIN Region origin ASes present in the Internet Routing Table:    18899
    ARIN Prefixes per ASN:                                        13.32
ARIN Region origin ASes announcing only one prefix:                6888
ARIN Region transit ASes present in the Internet Routing Table:    1956
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:    4097
Number of ARIN addresses announced to Internet:              1268366592
    Equivalent to 75 /8s, 153 /16s and 189 /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:                    240132
    Total RIPE prefixes after maximum aggregation:               112357
    RIPE Deaggregation factor:                                     2.14
Prefixes being announced from the RIPE address blocks:           236352
    Unique aggregates announced from the RIPE address blocks:    144828
RIPE Region origin ASes present in the Internet Routing Table:    28038
    RIPE Prefixes per ASN:                                         8.43
RIPE Region origin ASes announcing only one prefix:               12075
RIPE Region transit ASes present in the Internet Routing Table:    3911
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:   10388
Number of RIPE addresses announced to Internet:               711569280
    Equivalent to 42 /8s, 105 /16s and 175 /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:                  111120
    Total LACNIC prefixes after maximum aggregation:              26541
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:         112192
    Unique aggregates announced from the LACNIC address blocks:   47157
LACNIC Region origin ASes present in the Internet Routing Table:  10781
    LACNIC Prefixes per ASN:                                      10.41
LACNIC Region origin ASes announcing only one prefix:              2660
LACNIC Region transit ASes present in the Internet Routing Table:  2104
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:  8434
Number of LACNIC addresses announced to Internet:             176567808
    Equivalent to 10 /8s, 134 /16s and 54 /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:                  26004
    Total AfriNIC prefixes after maximum aggregation:              5208
    AfriNIC Deaggregation factor:                                  4.99
Prefixes being announced from the AfriNIC address blocks:         33922
    Unique aggregates announced from the AfriNIC address blocks:  11071
AfriNIC Region origin ASes present in the Internet Routing Table:  1536
    AfriNIC Prefixes per ASN:                                     22.08
AfriNIC Region origin ASes announcing only one prefix:              538
AfriNIC Region transit ASes present in the Internet Routing Table:  305
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       36
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  867
Number of AfriNIC addresses announced to Internet:            108444928
    Equivalent to 6 /8s, 118 /16s and 189 /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        8002       9000      57  CMNET-GD Guangdong Mobile Communication
  7545        5812        785     676  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3634       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3525       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        2890       1897      56  VNPT-AS-VN VNPT Corp, VN
  4766        2502      11120     582  KIXS-AS-KR Korea Telecom, KR
  9498        2364        502     239  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2127       1198      75  CNNIC-TENCENT-NET-AP Shenzhen Tencent C
  4755        2113        437     194  TATACOMM-AS TATA Communications formerl

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        5538       9708    2458  AMAZON-02, US
 11492        4656        308     753  CABLEONE, US
 22773        4004       3033     282  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3968        264      32  VIASAT-SP-BACKBONE, US
 16625        3589       1852    2496  AKAMAI-AS, US
  6327        3365       1313      63  SHAW, CA
 30036        2578        373     204  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2508       5029     449  CENTURYLINK-US-LEGACY-QWEST, US
  5972        2295        488     811  DNIC-ASBLK-05800-06055, US
 20115        2242       3032     504  CHARTER-20115, 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        6837       1726     143  UNI2-AS, ES
 20940        3784       3348     215  AKAMAI-ASN1, NL
  8551        3312        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3269        187      23  ALJAWWALSTC-AS, SA
 12389        2907       2279     895  ROSTELECOM-AS, RU
  9009        2509        262    1336  M247, GB
 34984        2228        357     599  TELLCOM-AS, TR
 61317        1761        262     976  ASDETUK www.heficed.com, GB
 58224        1634        890     568  TCI, IR
 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        8268       3457     577  Uninet S.A. de C.V., MX
 10620        3416        523     672  Telmex Colombia S.A., CO
 11830        2497        369      62  Instituto Costarricense de Electricidad
 13999        1778        397     471  Mega Cable, S.A. de C.V., MX
  6503        1515        359     477  Axtel, S.A.B. de C.V., MX
 28573        1452       2300     229  CLARO S.A., BR
  3816        1240        652     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1128       2351     134  TIM SA, BR
  6147        1079        369      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        1632        393      20  LINKdotNET-AS, EG
 24835        1429        499      33  RAYA-AS, EG
 36992        1311       1489     267  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         775         68      11  ORANGE-COTE-IVOIRE, CI
  6713         613       1863      34  IAM-AS, MA
 36935         579        522      40  Vodafone-, EG
 15399         500         49      28  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
  2018         338        319      74  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        8268       3457     577  Uninet S.A. de C.V., MX
  9808        8002       9000      57  CMNET-GD Guangdong Mobile Communication
 12479        6837       1726     143  UNI2-AS, ES
  7545        5812        785     676  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5538       9708    2458  AMAZON-02, US
  4538        4711       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4656        308     753  CABLEONE, US
 22773        4004       3033     282  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3968        264      32  VIASAT-SP-BACKBONE, US
 20940        3784       3348     215  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        8002         7945  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6837         6694  UNI2-AS, ES
  7545        5812         5136  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711         4637  ERX-CERNET-BKB China Education and Research Net
  7155        3968         3936  VIASAT-SP-BACKBONE, US
 11492        4656         3903  CABLEONE, US
 22773        4004         3722  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3634         3614  VIETEL-AS-AP Viettel Group, VN
 20940        3784         3569  AKAMAI-ASN1, NL
  7713        3525         3469  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
23.177.96.0/24       Origin:    397300  UNASSIGNED
23.177.96.0/24      Transit:     33387  NOCIX, 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

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     
/13:589     /14:1193    /15:2002    /16:13396   /17:8239    /18:14005   
/19:25397   /20:42475   /21:50649   /22:106957  /23:91891   /24:502824  
/25:1545    /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        5762        6837  UNI2-AS, ES
 11492        3611        4656  CABLEONE, US
  6327        3176        3365  SHAW, CA
  7155        3056        3968  VIASAT-SP-BACKBONE, US
 22773        2990        4004  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2805        3269  ALJAWWALSTC-AS, SA
  8551        2778        3312  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  8151        2763        8268  Uninet S.A. de C.V., MX
 30036        2231        2578  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1931        2497  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)
----------------------------------------------

   1:1909      2:1100      3:145       4:20        5:3598      6:84     
   7:5         8:1547      9:1        11:164      12:1738     13:390    
  14:2281     15:103      16:23       17:351      18:108      20:126    
  21:4        22:188      23:5076     24:2449     25:2        27:2515   
  29:19       31:2365     32:113      34:1        35:46       36:1734   
  37:3799     38:2219     39:637      40:165      41:3819     42:975    
  43:2068     44:288      45:15383    46:3695     47:353      48:7      
  49:1626     50:1814     51:100      52:1284     54:248      55:748    
  56:4        57:53       58:1727     59:1197     60:932      61:2297   
  62:2308     63:1962     64:5369     65:2358     66:5003     67:2868   
  68:1167     69:4114     70:1365     71:677      72:3163     74:2624   
  75:1501     76:696      77:2044     78:1678     79:2630     80:1868   
  81:1553     82:1367     83:1150     84:1308     85:2743     86:714    
  87:1823     88:973      89:3040     90:517      91:7384     92:1820   
  93:2555     94:3135     95:3502     96:1300     97:345      98:977    
  99:958     100:76      101:1057    102:1658    103:26857   104:4008   
 105:431     106:829     107:2331    108:728     109:3896    110:2040   
 111:3182    112:1933    113:1421    114:1472    115:1923    116:1898   
 117:2411    118:2307    119:1894    120:1546    121:1075    122:2520   
 123:2160    124:1599    125:2068    128:1343    129:1363    130:880    
 131:2024    132:772     133:362     134:1813    135:306     136:776    
 137:845     138:2394    139:1187    140:760     141:1209    142:1209   
 143:1335    144:1265    145:324     146:1499    147:1394    148:2155   
 149:1495    150:822     151:1082    152:1647    153:428     154:3018   
 155:1332    156:1760    157:1223    158:980     159:2014    160:2354   
 161:1250    162:3385    163:1097    164:1553    165:1428    166:597    
 167:1784    168:3645    169:696     170:4333    171:806     172:2744   
 173:2872    174:1005    175:1108    176:3258    177:4441    178:2993   
 179:1875    180:2264    181:2651    182:3219    183:2032    184:2420   
 185:18749   186:4239    187:3094    188:3325    189:2816    190:8676   
 191:1373    192:10709   193:8334    194:6765    195:4852    196:2863   
 197:2114    198:6029    199:5991    200:7344    201:5172    202:10580  
 203:10056   204:4602    205:3363    206:3743    207:3363    208:4031   
 209:4709    210:4186    211:2353    212:3749    213:3428    214:1165   
 215:64      216:6349    217:2586    218:1214    219:680     220:1953   
 221:968     222:855     223:2034   

End of report


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