[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 30 18:02:48 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 31 Jul, 2021

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

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

BGP routing table entries examined:                              857160
    Prefixes after maximum aggregation (per Origin AS):          324743
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      412110
Total ASes present in the Internet Routing Table:                 71690
    Prefixes per ASN:                                             11.96
Origin-only ASes present in the Internet Routing Table:           61629
Origin ASes announcing only one prefix:                           25427
Transit ASes present in the Internet Routing Table:               10061
Transit-only ASes present in the Internet Routing Table:            331
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      54
    Max AS path prepend of ASN ( 48366)                              51
Prefixes from unregistered ASNs in the Routing Table:              1040
    Number of instances of unregistered ASNs:                      1046
Number of 32-bit ASNs allocated by the RIRs:                      36736
Number of 32-bit ASNs visible in the Routing Table:               30574
Prefixes from 32-bit ASNs in the Routing Table:                  142126
Number of bogon 32-bit ASNs visible in the Routing Table:            25
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            528
Number of addresses announced to Internet:                   3038808832
    Equivalent to 181 /8s, 32 /16s and 139 /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:      284669

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

Prefixes being announced by APNIC Region ASes:                   230373
    Total APNIC prefixes after maximum aggregation:               65950
    APNIC Deaggregation factor:                                    3.49
Prefixes being announced from the APNIC address blocks:          225787
    Unique aggregates announced from the APNIC address blocks:    90840
APNIC Region origin ASes present in the Internet Routing Table:   11788
    APNIC Prefixes per ASN:                                       19.15
APNIC Region origin ASes announcing only one prefix:               3341
APNIC Region transit ASes present in the Internet Routing Table:   1674
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   6964
Number of APNIC addresses announced to Internet:              773592576
    Equivalent to 46 /8s, 28 /16s and 22 /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:                    250889
    Total ARIN prefixes after maximum aggregation:               114842
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           250634
    Unique aggregates announced from the ARIN address blocks:    119385
ARIN Region origin ASes present in the Internet Routing Table:    18868
    ARIN Prefixes per ASN:                                        13.28
ARIN Region origin ASes announcing only one prefix:                6848
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:    4021
Number of ARIN addresses announced to Internet:              1269399168
    Equivalent to 75 /8s, 169 /16s and 126 /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:                    238390
    Total RIPE prefixes after maximum aggregation:               111604
    RIPE Deaggregation factor:                                     2.14
Prefixes being announced from the RIPE address blocks:           234763
    Unique aggregates announced from the RIPE address blocks:    143747
RIPE Region origin ASes present in the Internet Routing Table:    28007
    RIPE Prefixes per ASN:                                         8.38
RIPE Region origin ASes announcing only one prefix:               12040
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:                          54
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10322
Number of RIPE addresses announced to Internet:               710916224
    Equivalent to 42 /8s, 95 /16s and 184 /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:                  110940
    Total LACNIC prefixes after maximum aggregation:              26492
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:         111992
    Unique aggregates announced from the LACNIC address blocks:   47040
LACNIC Region origin ASes present in the Internet Routing Table:  10775
    LACNIC Prefixes per ASN:                                      10.39
LACNIC Region origin ASes announcing only one prefix:              2674
LACNIC Region transit ASes present in the Internet Routing Table:  2081
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        38
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8427
Number of LACNIC addresses announced to Internet:             175991808
    Equivalent to 10 /8s, 125 /16s and 108 /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:                  25525
    Total AfriNIC prefixes after maximum aggregation:              5115
    AfriNIC Deaggregation factor:                                  4.99
Prefixes being announced from the AfriNIC address blocks:         33456
    Unique aggregates announced from the AfriNIC address blocks:  10632
AfriNIC Region origin ASes present in the Internet Routing Table:  1508
    AfriNIC Prefixes per ASN:                                     22.19
AfriNIC Region origin ASes announcing only one prefix:              524
AfriNIC Region transit ASes present in the Internet Routing Table:  299
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:  840
Number of AfriNIC addresses announced to Internet:            108503808
    Equivalent to 6 /8s, 119 /16s and 163 /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        7584       9000      57  CMNET-GD Guangdong Mobile Communication
  7545        5814        785     677  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4699       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3566       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3532       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        2800       1897      55  VNPT-AS-VN VNPT Corp, VN
  4766        2465      11119     566  KIXS-AS-KR Korea Telecom, KR
  9498        2358        483     245  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2125       1197      73  CNNIC-TENCENT-NET-AP Shenzhen Tencent C
  4755        2108        437     190  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        5286       9550    2349  AMAZON-02, US
 11492        4739        312     783  CABLEONE, US
  7155        3986        264      32  VIASAT-SP-BACKBONE, US
 22773        3973       3014     275  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3536       1821    2459  AKAMAI-AS, US
  6327        3367       1317      68  SHAW, CA
 30036        2586        375     173  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2532       5032     469  CENTURYLINK-US-LEGACY-QWEST, US
  5972        2269        468     806  DNIC-ASBLK-05800-06055, US
 20115        2248       3015     509  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        6767       1726     145  UNI2-AS, ES
 20940        3728       3348     215  AKAMAI-ASN1, NL
 39891        3267        187      22  ALJAWWALSTC-AS, SA
  8551        2956        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2913       2283     897  ROSTELECOM-AS, RU
  9009        2438        254    1300  M247, GB
 34984        2219        357     595  TELLCOM-AS, TR
 61317        1679        277     884  ASDETUK www.heficed.com, GB
 58224        1616        888     562  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        8615       3450     588  Uninet S.A. de C.V., MX
 10620        3407        525     651  Telmex Colombia S.A., CO
 11830        2508        369      62  Instituto Costarricense de Electricidad
 13999        1768        409     474  Mega Cable, S.A. de C.V., MX
  6503        1500        359     477  Axtel, S.A.B. de C.V., MX
 28573        1442       2306     233  CLARO S.A., BR
  3816        1240        652     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1099        369      22  Telefonica del Peru S.A.A., PE
 26615        1090       2351     134  TIM SA, BR
 11664         979        192     438  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        1506        393      22  LINKdotNET-AS, EG
 24835        1458        499      30  RAYA-AS, EG
 36992        1306       1489     267  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         734         68      11  ORANGE-COTE-IVOIRE, CI
  6713         612       1863      34  IAM-AS, MA
 36935         548        522      40  Vodafone-, EG
 15399         500         49      27  WANANCHI-, KE
  2018         328        319      74  TENET-1, ZA
 24757         320         76       5  EthioNet-AS, ET

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        8615       3450     588  Uninet S.A. de C.V., MX
  9808        7584       9000      57  CMNET-GD Guangdong Mobile Communication
 12479        6767       1726     145  UNI2-AS, ES
  7545        5814        785     677  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5286       9550    2349  AMAZON-02, US
 11492        4739        312     783  CABLEONE, US
  4538        4699       4192      74  ERX-CERNET-BKB China Education and Rese
  7155        3986        264      32  VIASAT-SP-BACKBONE, US
 22773        3973       3014     275  ASN-CXA-ALL-CCI-22773-RDC, US
 20940        3728       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        7584         7527  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6767         6622  UNI2-AS, ES
  7545        5814         5137  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4699         4625  ERX-CERNET-BKB China Education and Research Net
 11492        4739         3956  CABLEONE, US
  7155        3986         3954  VIASAT-SP-BACKBONE, US
 22773        3973         3698  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3566         3546  VIETEL-AS-AP Viettel Group, VN
 20940        3728         3513  AKAMAI-ASN1, NL
  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
    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
      3577  UNALLOCATED  12.19.197.0/24             209  CENTURYLINK-US-LEGACY-QWEST,

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
5.44.252.0/23        Origin:      5413  AS5413, GB
                    Transit:      2914  NTT-COMMUNICATIONS-2914, US
5.44.253.0/24        Origin:     58349  INNETRA-AS, GB
                    Transit:       174  COGENT-174, US
23.141.0.0/24        Origin:    395350  UNASSIGNED
                    Transit:     11426  TWC-11426-CAROLINAS, US
23.162.32.0/24       Origin:     32444  SAFELINK-MV, US
                    Transit:      6939  HURRICANE, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
                    Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 

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      /11:102     /12:305     
/13:589     /14:1193    /15:2002    /16:13442   /17:8268    /18:13992   
/19:25460   /20:42425   /21:50438   /22:106898  /23:91519   /24:499019  
/25:1438    /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        5704        6767  UNI2-AS, ES
 11492        3727        4739  CABLEONE, US
  6327        3175        3367  SHAW, CA
  8151        3120        8615  Uninet S.A. de C.V., MX
  7155        3074        3986  VIASAT-SP-BACKBONE, US
 22773        2969        3973  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2803        3267  ALJAWWALSTC-AS, SA
  8551        2422        2956  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2238        2586  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1934        2508  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      2:1118      3:141       4:20        5:3552      6:79     
   7:5         8:1533      9:1        11:164      12:1739     13:376    
  14:2278     15:94       16:16       17:328      18:104      20:124    
  21:1        22:188      23:4927     24:2411     25:2        27:2511   
  29:19       31:2313     32:111      34:1        35:47       36:1601   
  37:3767     38:2184     39:620      40:186      41:3760     42:970    
  43:2053     44:266      45:15303    46:3677     47:349      48:2      
  49:1617     50:1811     51:101      52:1238     54:215      55:691    
  56:9        57:53       58:1751     59:1203     60:933      61:2341   
  62:2296     63:1965     64:5371     65:2359     66:5005     67:2885   
  68:1168     69:4095     70:1365     71:681      72:3144     74:2602   
  75:1492     76:697      77:2015     78:1642     79:2291     80:1869   
  81:1515     82:1356     83:1138     84:1263     85:2718     86:701    
  87:1809     88:954      89:2993     90:502      91:7377     92:1806   
  93:2568     94:3108     95:3503     96:1291     97:340      98:976    
  99:968     100:93      101:1020    102:1560    103:26517   104:3877   
 105:431     106:800     107:2257    108:727     109:3871    110:2023   
 111:3144    112:1930    113:1432    114:1451    115:1884    116:1882   
 117:2348    118:2335    119:1880    120:1455    121:1067    122:2525   
 123:2177    124:1595    125:2068    128:1326    129:1319    130:888    
 131:1998    132:752     133:360     134:1641    135:302     136:786    
 137:940     138:2393    139:1194    140:770     141:1191    142:1230   
 143:1336    144:1264    145:320     146:1488    147:1375    148:2192   
 149:1476    150:820     151:1073    152:1623    153:421     154:2970   
 155:1347    156:1670    157:1211    158:968     159:2005    160:2321   
 161:1186    162:3381    163:1025    164:1527    165:1401    166:614    
 167:1797    168:3627    169:699     170:4275    171:794     172:2601   
 173:2967    174:1008    175:1090    176:3180    177:4368    178:2953   
 179:1921    180:2252    181:2620    182:3215    183:2031    184:2419   
 185:18625   186:4158    187:3156    188:3327    189:2891    190:8701   
 191:1375    192:10720   193:8263    194:6716    195:4817    196:2891   
 197:1881    198:6055    199:6005    200:7333    201:5211    202:10548  
 203:10087   204:4664    205:3350    206:3701    207:3375    208:4036   
 209:4710    210:4187    211:2333    212:3723    213:3464    214:1202   
 215:56      216:6320    217:2567    218:1202    219:696     220:1978   
 221:952     222:872     223:1963   

End of report


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