[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 23 18:02:51 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 24 Jul, 2021

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

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

BGP routing table entries examined:                              856772
    Prefixes after maximum aggregation (per Origin AS):          324531
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      412899
Total ASes present in the Internet Routing Table:                 71623
    Prefixes per ASN:                                             11.96
Origin-only ASes present in the Internet Routing Table:           61576
Origin ASes announcing only one prefix:                           25404
Transit ASes present in the Internet Routing Table:               10047
Transit-only ASes present in the Internet Routing Table:            330
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:                      36681
Number of 32-bit ASNs visible in the Routing Table:               30508
Prefixes from 32-bit ASNs in the Routing Table:                  141846
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:            521
Number of addresses announced to Internet:                   3037871360
    Equivalent to 181 /8s, 18 /16s and 61 /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:      284880

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

Prefixes being announced by APNIC Region ASes:                   230021
    Total APNIC prefixes after maximum aggregation:               65881
    APNIC Deaggregation factor:                                    3.49
Prefixes being announced from the APNIC address blocks:          225438
    Unique aggregates announced from the APNIC address blocks:    90726
APNIC Region origin ASes present in the Internet Routing Table:   11764
    APNIC Prefixes per ASN:                                       19.16
APNIC Region origin ASes announcing only one prefix:               3345
APNIC Region transit ASes present in the Internet Routing Table:   1675
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:   6942
Number of APNIC addresses announced to Internet:              773719808
    Equivalent to 46 /8s, 30 /16s and 7 /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:                    250668
    Total ARIN prefixes after maximum aggregation:               114795
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           250507
    Unique aggregates announced from the ARIN address blocks:    119953
ARIN Region origin ASes present in the Internet Routing Table:    18860
    ARIN Prefixes per ASN:                                        13.28
ARIN Region origin ASes announcing only one prefix:                6846
ARIN Region transit ASes present in the Internet Routing Table:    1947
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:    4009
Number of ARIN addresses announced to Internet:              1269318528
    Equivalent to 75 /8s, 168 /16s and 67 /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:                    238710
    Total RIPE prefixes after maximum aggregation:               111547
    RIPE Deaggregation factor:                                     2.14
Prefixes being announced from the RIPE address blocks:           235082
    Unique aggregates announced from the RIPE address blocks:    143597
RIPE Region origin ASes present in the Internet Routing Table:    27988
    RIPE Prefixes per ASN:                                         8.40
RIPE Region origin ASes announcing only one prefix:               12030
RIPE Region transit ASes present in the Internet Routing Table:    3890
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:   10310
Number of RIPE addresses announced to Internet:               710902144
    Equivalent to 42 /8s, 95 /16s and 129 /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:                  110817
    Total LACNIC prefixes after maximum aggregation:              26446
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:         111866
    Unique aggregates announced from the LACNIC address blocks:   47011
LACNIC Region origin ASes present in the Internet Routing Table:  10768
    LACNIC Prefixes per ASN:                                      10.39
LACNIC Region origin ASes announcing only one prefix:              2669
LACNIC Region transit ASes present in the Internet Routing Table:  2076
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        31
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8413
Number of LACNIC addresses announced to Internet:             175964928
    Equivalent to 10 /8s, 125 /16s and 3 /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:                  25513
    Total AfriNIC prefixes after maximum aggregation:              5115
    AfriNIC Deaggregation factor:                                  4.99
Prefixes being announced from the AfriNIC address blocks:         33358
    Unique aggregates announced from the AfriNIC address blocks:  11152
AfriNIC Region origin ASes present in the Internet Routing Table:  1497
    AfriNIC Prefixes per ASN:                                     22.28
AfriNIC Region origin ASes announcing only one prefix:              514
AfriNIC Region transit ASes present in the Internet Routing Table:  299
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  834
Number of AfriNIC addresses announced to Internet:            107562240
    Equivalent to 6 /8s, 105 /16s and 69 /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        7608       9002      61  CMNET-GD Guangdong Mobile Communication
  7545        5814        783     677  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4700       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3563       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3531       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        2796       1897      55  VNPT-AS-VN VNPT Corp, VN
  4766        2438      11121     570  KIXS-AS-KR Korea Telecom, KR
  9498        2360        483     247  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2125       1197      73  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        5294       9547    2375  AMAZON-02, US
 11492        4750        313     793  CABLEONE, US
  7155        3994        264      32  VIASAT-SP-BACKBONE, US
 22773        3983       3021     275  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3537       1823    2459  AKAMAI-AS, US
  6327        3367       1317      68  SHAW, CA
 30036        2572        371     185  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2536       5032     471  CENTURYLINK-US-LEGACY-QWEST, US
  5972        2264        468     798  DNIC-ASBLK-05800-06055, US
 20115        2225       2998     522  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        6770       1726     145  UNI2-AS, ES
 20940        3727       3348     214  AKAMAI-ASN1, NL
 39891        3267        187      22  ALJAWWALSTC-AS, SA
  8551        2965        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2913       2283     897  ROSTELECOM-AS, RU
  9009        2467        258    1317  M247, GB
 34984        2215        356     594  TELLCOM-AS, TR
 61317        1647        270     861  ASDETUK www.heficed.com, GB
 58224        1611        888     558  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        8589       3448     582  Uninet S.A. de C.V., MX
 10620        3407        525     651  Telmex Colombia S.A., CO
 11830        2506        369      62  Instituto Costarricense de Electricidad
 13999        1765        409     475  Mega Cable, S.A. de C.V., MX
  6503        1489        359     477  Axtel, S.A.B. de C.V., MX
 28573        1434       2300     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         997        200     437  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        1501        393      22  LINKdotNET-AS, EG
 24835        1457        498      30  RAYA-AS, EG
 36992        1307       1489     267  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         736         68      11  ORANGE-COTE-IVOIRE, CI
  6713         612       1863      34  IAM-AS, MA
 36935         533        522      40  Vodafone-, EG
 15399         498         49      27  WANANCHI-, KE
  2018         329        319      74  TENET-1, ZA
 24757         318         77       6  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        8589       3448     582  Uninet S.A. de C.V., MX
  9808        7608       9002      61  CMNET-GD Guangdong Mobile Communication
 12479        6770       1726     145  UNI2-AS, ES
  7545        5814        783     677  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5294       9547    2375  AMAZON-02, US
 11492        4750        313     793  CABLEONE, US
  4538        4700       4192      74  ERX-CERNET-BKB China Education and Rese
  7155        3994        264      32  VIASAT-SP-BACKBONE, US
 22773        3983       3021     275  ASN-CXA-ALL-CCI-22773-RDC, US
 20940        3727       3348     214  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        7608         7547  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6770         6625  UNI2-AS, ES
  7545        5814         5137  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4700         4626  ERX-CERNET-BKB China Education and Research Net
  7155        3994         3962  VIASAT-SP-BACKBONE, US
 11492        4750         3957  CABLEONE, US
 22773        3983         3708  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3563         3543  VIETEL-AS-AP Viettel Group, VN
 20940        3727         3513  AKAMAI-ASN1, NL
  7713        3531         3475  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
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 
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        /8:17       /9:14      /10:41      /11:102     /12:305     
/13:589     /14:1192    /15:2000    /16:13427   /17:8265    /18:13974   
/19:25431   /20:42376   /21:50459   /22:106854  /23:91528   /24:498787  
/25:1411    /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        6770  UNI2-AS, ES
 11492        3729        4750  CABLEONE, US
  6327        3175        3367  SHAW, CA
  8151        3099        8589  Uninet S.A. de C.V., MX
  7155        3082        3994  VIASAT-SP-BACKBONE, US
 22773        2965        3983  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2803        3267  ALJAWWALSTC-AS, SA
  8551        2431        2965  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2243        2572  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1932        2506  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)
----------------------------------------------

   1:1899      2:1128      3:141       4:20        5:3559      6:79     
   7:5         8:1536      9:1        11:164      12:1747     13:379    
  14:2283     15:93       16:20       17:327      18:103      20:124    
  21:1        22:188      23:4889     24:2417     25:2        27:2502   
  29:19       31:2308     32:111      34:1        35:47       36:1593   
  37:3793     38:2183     39:620      40:183      41:3748     42:981    
  43:2056     44:265      45:15260    46:3708     47:350      49:1615   
  50:1803     51:101      52:1246     54:218      55:797      56:4      
  57:53       58:1747     59:1186     60:935      61:2315     62:2295   
  63:1968     64:5370     65:2357     66:5026     67:2885     68:1177   
  69:4078     70:1373     71:681      72:3144     74:2599     75:1492   
  76:697      77:2048     78:1716     79:2300     80:1868     81:1519   
  82:1355     83:1144     84:1265     85:2713     86:704      87:1813   
  88:975      89:3017     90:499      91:7384     92:1794     93:2563   
  94:3130     95:3529     96:1290     97:341      98:976      99:968    
 100:93      101:1025    102:1538    103:26395   104:3871    105:430    
 106:796     107:2247    108:727     109:3854    110:2019    111:3140   
 112:1927    113:1432    114:1455    115:1879    116:1881    117:2338   
 118:2327    119:1894    120:1451    121:1066    122:2518    123:2185   
 124:1591    125:2069    128:1314    129:1316    130:879     131:1981   
 132:751     133:360     134:1643    135:302     136:771     137:939    
 138:2409    139:1193    140:765     141:1209    142:1204    143:1328   
 144:1262    145:326     146:1477    147:1373    148:2194    149:1471   
 150:820     151:1077    152:1619    153:420     154:2981    155:1350   
 156:1662    157:1211    158:957     159:2012    160:2318    161:1234   
 162:3375    163:1021    164:1529    165:1406    166:603     167:1779   
 168:3621    169:701     170:4285    171:793     172:2535    173:2981   
 174:1005    175:1079    176:3180    177:4348    178:2950    179:1922   
 180:2266    181:2623    182:3209    183:2044    184:2418    185:18578  
 186:4122    187:3152    188:3345    189:2871    190:8712    191:1371   
 192:10726   193:8274    194:6696    195:4807    196:2903    197:1884   
 198:6060    199:6012    200:7316    201:5172    202:10544   203:10053  
 204:4671    205:3345    206:3694    207:3388    208:4034    209:4727   
 210:4192    211:2325    212:3718    213:3454    214:1192    215:56     
 216:6310    217:2569    218:1204    219:696     220:1986    221:952    
 222:862     223:1959   

End of report


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