[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 20 18:02:55 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 21 Aug, 2021

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

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

BGP routing table entries examined:                              859868
    Prefixes after maximum aggregation (per Origin AS):          325752
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      413785
Total ASes present in the Internet Routing Table:                 71865
    Prefixes per ASN:                                             11.97
Origin-only ASes present in the Internet Routing Table:           61780
Origin ASes announcing only one prefix:                           25515
Transit ASes present in the Internet Routing Table:               10085
Transit-only ASes present in the Internet Routing Table:            338
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:              1049
    Number of instances of unregistered ASNs:                      1055
Number of 32-bit ASNs allocated by the RIRs:                      36959
Number of 32-bit ASNs visible in the Routing Table:               30762
Prefixes from 32-bit ASNs in the Routing Table:                  142783
Number of bogon 32-bit ASNs visible in the Routing Table:            26
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            520
Number of addresses announced to Internet:                   3038543744
    Equivalent to 181 /8s, 28 /16s and 127 /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:      285499

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

Prefixes being announced by APNIC Region ASes:                   230866
    Total APNIC prefixes after maximum aggregation:               66047
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          226383
    Unique aggregates announced from the APNIC address blocks:    91138
APNIC Region origin ASes present in the Internet Routing Table:   11871
    APNIC Prefixes per ASN:                                       19.07
APNIC Region origin ASes announcing only one prefix:               3372
APNIC Region transit ASes present in the Internet Routing Table:   1679
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:   7035
Number of APNIC addresses announced to Internet:              773573632
    Equivalent to 46 /8s, 27 /16s and 204 /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:                    251610
    Total ARIN prefixes after maximum aggregation:               115210
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           251096
    Unique aggregates announced from the ARIN address blocks:    119829
ARIN Region origin ASes present in the Internet Routing Table:    18894
    ARIN Prefixes per ASN:                                        13.29
ARIN Region origin ASes announcing only one prefix:                6884
ARIN Region transit ASes present in the Internet Routing Table:    1946
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:    4074
Number of ARIN addresses announced to Internet:              1268434432
    Equivalent to 75 /8s, 154 /16s and 198 /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:                    239014
    Total RIPE prefixes after maximum aggregation:               111957
    RIPE Deaggregation factor:                                     2.13
Prefixes being announced from the RIPE address blocks:           235603
    Unique aggregates announced from the RIPE address blocks:    144381
RIPE Region origin ASes present in the Internet Routing Table:    28037
    RIPE Prefixes per ASN:                                         8.40
RIPE Region origin ASes announcing only one prefix:               12060
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:   10361
Number of RIPE addresses announced to Internet:               711071360
    Equivalent to 42 /8s, 98 /16s and 22 /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:                  111414
    Total LACNIC prefixes after maximum aggregation:              26598
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:         112417
    Unique aggregates announced from the LACNIC address blocks:   47233
LACNIC Region origin ASes present in the Internet Routing Table:  10785
    LACNIC Prefixes per ASN:                                      10.42
LACNIC Region origin ASes announcing only one prefix:              2667
LACNIC Region transit ASes present in the Internet Routing Table:  2088
Average LACNIC Region AS path length visible:                       4.8
    Max LACNIC Region AS path length visible:                        29
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8438
Number of LACNIC addresses announced to Internet:             176610048
    Equivalent to 10 /8s, 134 /16s and 219 /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:                  25914
    Total AfriNIC prefixes after maximum aggregation:              5176
    AfriNIC Deaggregation factor:                                  5.01
Prefixes being announced from the AfriNIC address blocks:         33849
    Unique aggregates announced from the AfriNIC address blocks:  10740
AfriNIC Region origin ASes present in the Internet Routing Table:  1521
    AfriNIC Prefixes per ASN:                                     22.25
AfriNIC Region origin ASes announcing only one prefix:              532
AfriNIC Region transit ASes present in the Internet Routing Table:  304
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       32
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  854
Number of AfriNIC addresses announced to Internet:            108511488
    Equivalent to 6 /8s, 119 /16s and 193 /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        7736       9000      57  CMNET-GD Guangdong Mobile Communication
  7545        5821        785     675  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3547       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3532       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        2801       1897      56  VNPT-AS-VN VNPT Corp, VN
  4766        2489      11121     572  KIXS-AS-KR Korea Telecom, KR
  9498        2373        503     248  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2129       1198      75  CNNIC-TENCENT-NET-AP Shenzhen Tencent C
  4755        2115        437     192  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        5485       9667    2419  AMAZON-02, US
 11492        4712        311     759  CABLEONE, US
  7155        3981        264      32  VIASAT-SP-BACKBONE, US
 22773        3971       3029     277  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3598       1859    2492  AKAMAI-AS, US
  6327        3362       1313      62  SHAW, CA
 30036        2573        373     228  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2516       5029     454  CENTURYLINK-US-LEGACY-QWEST, US
  5972        2287        485     814  DNIC-ASBLK-05800-06055, US
 20115        2244       3048     506  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        6780       1726     143  UNI2-AS, ES
 20940        3766       3348     216  AKAMAI-ASN1, NL
 39891        3267        187      22  ALJAWWALSTC-AS, SA
  8551        2933        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2914       2283     896  ROSTELECOM-AS, RU
  9009        2485        260    1330  M247, GB
 34984        2217        357     594  TELLCOM-AS, TR
 61317        1773        270     979  ASDETUK www.heficed.com, GB
 58224        1627        889     563  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        8834       3459     585  Uninet S.A. de C.V., MX
 10620        3399        522     671  Telmex Colombia S.A., CO
 11830        2501        369      62  Instituto Costarricense de Electricidad
 13999        1803        414     476  Mega Cable, S.A. de C.V., MX
  6503        1509        359     477  Axtel, S.A.B. de C.V., MX
 28573        1451       2307     233  CLARO S.A., BR
  3816        1240        652     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1098       2351     134  TIM SA, BR
  6147        1088        369      22  Telefonica del Peru S.A.A., PE
 11664         979        193     435  Techtel LMDS Comunicaciones Interactiva

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        1640        393      22  LINKdotNET-AS, EG
 24835        1464        503      31  RAYA-AS, EG
 36992        1310       1489     267  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         758         68      11  ORANGE-COTE-IVOIRE, CI
  6713         614       1863      34  IAM-AS, MA
 36935         571        522      40  Vodafone-, EG
 15399         500         49      28  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
  2018         337        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        8834       3459     585  Uninet S.A. de C.V., MX
  9808        7736       9000      57  CMNET-GD Guangdong Mobile Communication
 12479        6780       1726     143  UNI2-AS, ES
  7545        5821        785     675  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5485       9667    2419  AMAZON-02, US
 11492        4712        311     759  CABLEONE, US
  4538        4711       4192      74  ERX-CERNET-BKB China Education and Rese
  7155        3981        264      32  VIASAT-SP-BACKBONE, US
 22773        3971       3029     277  ASN-CXA-ALL-CCI-22773-RDC, US
 20940        3766       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        7736         7679  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6780         6637  UNI2-AS, ES
  7545        5821         5146  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711         4637  ERX-CERNET-BKB China Education and Research Net
 11492        4712         3953  CABLEONE, US
  7155        3981         3949  VIASAT-SP-BACKBONE, US
 22773        3971         3694  ASN-CXA-ALL-CCI-22773-RDC, US
 20940        3766         3550  AKAMAI-ASN1, NL
  7552        3547         3527  VIETEL-AS-AP Viettel Group, VN
  7713        3532         3476  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
     40544  UNALLOCATED  12.0.33.0/24              6461  ZAYO-6461, US
     15132  UNALLOCATED  12.9.150.0/24             1239  SPRINTLINK, 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
23.141.0.0/24        Origin:    395350  UNASSIGNED
                    Transit:     11426  TWC-11426-CAROLINAS, US
23.177.96.0/24       Origin:    397300  UNASSIGNED
                    Transit:     33387  NOCIX, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
                    Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
27.126.156.0/22      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala
27.126.156.0/23      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala

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     /12:303     
/13:589     /14:1193    /15:2006    /16:13420   /17:8214    /18:14001   
/19:25441   /20:42501   /21:50770   /22:107164  /23:91675   /24:500974  
/25:1446    /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        5716        6780  UNI2-AS, ES
 11492        3671        4712  CABLEONE, US
  6327        3173        3362  SHAW, CA
  8151        3147        8834  Uninet S.A. de C.V., MX
  7155        3069        3981  VIASAT-SP-BACKBONE, US
 22773        2973        3971  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2803        3267  ALJAWWALSTC-AS, SA
  8551        2399        2933  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2225        2573  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1934        2501  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)
----------------------------------------------

   1:1906      2:1107      3:142       4:20        5:3580      6:82     
   7:5         8:1530      9:1        11:164      12:1743     13:384    
  14:2286     15:100      16:21       17:342      18:108      20:124    
  21:1        22:188      23:4993     24:2441     25:2        27:2506   
  29:19       31:2347     32:116      34:1        35:47       36:1699   
  37:3791     38:2203     39:639      40:164      41:3795     42:971    
  43:2080     44:274      45:15380    46:3662     47:348      48:7      
  49:1622     50:1813     51:101      52:1278     54:251      55:641    
  56:4        57:53       58:1733     59:1202     60:935      61:2300   
  62:2311     63:1955     64:5374     65:2361     66:4994     67:2877   
  68:1167     69:4122     70:1366     71:677      72:3150     74:2616   
  75:1500     76:699      77:2046     78:1654     79:2262     80:1879   
  81:1544     82:1366     83:1144     84:1285     85:2737     86:718    
  87:1806     88:962      89:3010     90:517      91:7371     92:1800   
  93:2541     94:3107     95:3502     96:1297     97:350      98:979    
  99:961     100:77      101:1028    102:1590    103:26752   104:3891   
 105:432     106:812     107:2285    108:729     109:3859    110:2033   
 111:3149    112:1931    113:1425    114:1468    115:1895    116:1887   
 117:2352    118:2327    119:1899    120:1462    121:1060    122:2515   
 123:2163    124:1599    125:2066    128:1331    129:1371    130:863    
 131:2013    132:752     133:363     134:1823    135:299     136:780    
 137:847     138:2390    139:1186    140:748     141:1210    142:1204   
 143:1339    144:1263    145:322     146:1495    147:1412    148:2163   
 149:1498    150:817     151:1080    152:1630    153:424     154:2993   
 155:1329    156:1700    157:1225    158:970     159:2015    160:2348   
 161:1239    162:3389    163:1092    164:1546    165:1418    166:595    
 167:1785    168:3658    169:705     170:4350    171:804     172:2642   
 173:2949    174:1021    175:1091    176:3213    177:4387    178:2975   
 179:1879    180:2258    181:2615    182:3221    183:2011    184:2419   
 185:18717   186:4216    187:3161    188:3310    189:2889    190:8723   
 191:1369    192:10717   193:8290    194:6746    195:4847    196:2903   
 197:2108    198:6019    199:6000    200:7381    201:5215    202:10566  
 203:10063   204:4610    205:3383    206:3713    207:3340    208:4026   
 209:4707    210:4188    211:2343    212:3744    213:3461    214:1166   
 215:60      216:6344    217:2578    218:1207    219:682     220:1966   
 221:953     222:857     223:1996   

End of report


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