[safnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 4 18:03:09 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 05 Jun, 2021

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

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

BGP routing table entries examined:                              861529
    Prefixes after maximum aggregation (per Origin AS):          325860
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      409458
Total ASes present in the Internet Routing Table:                 71380
    Prefixes per ASN:                                             12.07
Origin-only ASes present in the Internet Routing Table:           61374
Origin ASes announcing only one prefix:                           25347
Transit ASes present in the Internet Routing Table:               10006
Transit-only ASes present in the Internet Routing Table:            318
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:              1039
    Number of instances of unregistered ASNs:                      1046
Number of 32-bit ASNs allocated by the RIRs:                      36221
Number of 32-bit ASNs visible in the Routing Table:               30122
Prefixes from 32-bit ASNs in the Routing Table:                  140143
Number of bogon 32-bit ASNs visible in the Routing Table:            29
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            526
Number of addresses announced to Internet:                   3040850816
    Equivalent to 181 /8s, 63 /16s and 179 /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:      291740

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

Prefixes being announced by APNIC Region ASes:                   229660
    Total APNIC prefixes after maximum aggregation:               65549
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          225654
    Unique aggregates announced from the APNIC address blocks:    90093
APNIC Region origin ASes present in the Internet Routing Table:   11612
    APNIC Prefixes per ASN:                                       19.43
APNIC Region origin ASes announcing only one prefix:               3333
APNIC Region transit ASes present in the Internet Routing Table:   1636
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         31
Number of APNIC region 32-bit ASNs visible in the Routing Table:   6773
Number of APNIC addresses announced to Internet:              774887424
    Equivalent to 46 /8s, 47 /16s and 216 /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:                    248257
    Total ARIN prefixes after maximum aggregation:               113608
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           248329
    Unique aggregates announced from the ARIN address blocks:    118437
ARIN Region origin ASes present in the Internet Routing Table:    18819
    ARIN Prefixes per ASN:                                        13.20
ARIN Region origin ASes announcing only one prefix:                6820
ARIN Region transit ASes present in the Internet Routing Table:    1952
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    3892
Number of ARIN addresses announced to Internet:              1271333888
    Equivalent to 75 /8s, 199 /16s and 4 /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:                    245789
    Total RIPE prefixes after maximum aggregation:               114462
    RIPE Deaggregation factor:                                     2.15
Prefixes being announced from the RIPE address blocks:           241970
    Unique aggregates announced from the RIPE address blocks:    142620
RIPE Region origin ASes present in the Internet Routing Table:    27963
    RIPE Prefixes per ASN:                                         8.65
RIPE Region origin ASes announcing only one prefix:               12005
RIPE Region transit ASes present in the Internet Routing Table:    3904
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:   10220
Number of RIPE addresses announced to Internet:               710559104
    Equivalent to 42 /8s, 90 /16s and 69 /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:                  110886
    Total LACNIC prefixes after maximum aggregation:              26424
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:         112010
    Unique aggregates announced from the LACNIC address blocks:   47110
LACNIC Region origin ASes present in the Internet Routing Table:  10770
    LACNIC Prefixes per ASN:                                      10.40
LACNIC Region origin ASes announcing only one prefix:              2681
LACNIC Region transit ASes present in the Internet Routing Table:  2043
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:  8417
Number of LACNIC addresses announced to Internet:             176250624
    Equivalent to 10 /8s, 129 /16s and 95 /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:                  25897
    Total AfriNIC prefixes after maximum aggregation:              5077
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         33040
    Unique aggregates announced from the AfriNIC address blocks:  10730
AfriNIC Region origin ASes present in the Internet Routing Table:  1478
    AfriNIC Prefixes per ASN:                                     22.35
AfriNIC Region origin ASes announcing only one prefix:              508
AfriNIC Region transit ASes present in the Internet Routing Table:  302
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  820
Number of AfriNIC addresses announced to Internet:            107378432
    Equivalent to 6 /8s, 102 /16s and 119 /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        7859       8999      55  CMNET-GD Guangdong Mobile Communication
  7545        5786        783     674  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4761       4192      74  ERX-CERNET-BKB China Education and Rese
  7713        3528       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
  7552        3479       1330      20  VIETEL-AS-AP Viettel Group, VN
 45899        2809       1896      54  VNPT-AS-VN VNPT Corp, VN
  4766        2426      11104     563  KIXS-AS-KR Korea Telecom, KR
  9498        2346        482     243  BBIL-AP BHARTI Airtel Ltd., IN
  4755        2127        441     192  TATACOMM-AS TATA Communications formerl
 45090        2116       1197      71  CNNIC-TENCENT-NET-AP Shenzhen Tencent C

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        5163       9380    2293  AMAZON-02, US
 11492        4741        313     677  CABLEONE, US
  7155        4026        264      32  VIASAT-SP-BACKBONE, US
 22773        3927       3002     242  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3466       1774    2426  AKAMAI-AS, US
  6327        3361       1317      69  SHAW, CA
 30036        2582        374     119  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2515       5034     479  CENTURYLINK-US-LEGACY-QWEST, US
  5972        2225        450     798  DNIC-ASBLK-05800-06055, US
 20115        2171       2929     502  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
 47331        7831       1053    3511  TTNET, TR
 12479        6710       1725     146  UNI2-AS, ES
 20940        3625       3347     201  AKAMAI-ASN1, NL
 39891        3266        187      22  ALJAWWALSTC-AS, SA
  8551        2982        378      40  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2919       2283     897  ROSTELECOM-AS, RU
  9009        2429        254    1306  M247, GB
 34984        2204        355     591  TELLCOM-AS, TR
 13188        1609        100      31  TRIOLAN, UA
 58224        1598        887     567  TCI, IR

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        8645       3483     573  Uninet S.A. de C.V., MX
 10620        3422        526     613  Telmex Colombia S.A., CO
 11830        2501        369      62  Instituto Costarricense de Electricidad
 13999        1737        435     455  Mega Cable, S.A. de C.V., MX
  6503        1450        311     476  Axtel, S.A.B. de C.V., MX
 28573        1395       2283     228  CLARO S.A., BR
  3816        1237        649     151  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1113        374      31  Telefonica del Peru S.A.A., PE
 11664        1002        207     419  Techtel LMDS Comunicaciones Interactiva
 11172         963        111      69  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        1562        393      22  LINKdotNET-AS, EG
 24835        1454        498      30  RAYA-AS, EG
 36992        1259       1457     265  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         528        522      40  Vodafone-, EG
 15399         491         48      24  WANANCHI-, KE
 37342         484         32       1  MOVITEL, MZ
 36914         420         82       3  KENET-AS, KE

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        8645       3483     573  Uninet S.A. de C.V., MX
  9808        7859       8999      55  CMNET-GD Guangdong Mobile Communication
 47331        7831       1053    3511  TTNET, TR
 12479        6710       1725     146  UNI2-AS, ES
  7545        5786        783     674  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5163       9380    2293  AMAZON-02, US
  4538        4761       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4741        313     677  CABLEONE, US
  7155        4026        264      32  VIASAT-SP-BACKBONE, US
 22773        3927       3002     242  ASN-CXA-ALL-CCI-22773-RDC, US

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        7859         7804  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6710         6564  UNI2-AS, ES
  7545        5786         5112  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4761         4687  ERX-CERNET-BKB China Education and Research Net
 47331        7831         4320  TTNET, TR
 11492        4741         4064  CABLEONE, US
  7155        4026         3994  VIASAT-SP-BACKBONE, US
 22773        3927         3685  ASN-CXA-ALL-CCI-22773-RDC, US
  7713        3528         3472  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID
  7552        3479         3459  VIETEL-AS-AP Viettel Group, VN

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
     46505  UNALLOCATED  12.7.131.0/24             7018  ATT-INTERNET4, 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
23.142.80.0/24       Origin:    209319  IPV6ROUTING, US
                    Transit:     46573  LAYER-HOST, 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 
41.67.224.0/22       Origin:     15964  CAMNET-AS, CM
                    Transit:     12956  TELEFONICA TELXIUS, ES

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     /12:306     
/13:587     /14:1193    /15:1993    /16:13474   /17:8330    /18:13983   
/19:25477   /20:42323   /21:51089   /22:107212  /23:92001   /24:501993  
/25:1396    /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
 47331        6998        7831  TTNET, TR
 12479        5659        6710  UNI2-AS, ES
 11492        3777        4741  CABLEONE, US
  8151        3189        8645  Uninet S.A. de C.V., MX
  6327        3167        3361  SHAW, CA
  7155        3114        4026  VIASAT-SP-BACKBONE, US
 22773        2960        3927  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2801        3266  ALJAWWALSTC-AS, SA
  8551        2447        2982  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2249        2582  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1887      2:1190      3:131       4:19        5:3602      6:74     
   7:5         8:1532      9:1        11:164      12:1741     13:363    
  14:2305     15:78       16:15       17:322      18:93       20:128    
  21:1        22:188      23:4788     24:2416     25:2        27:2548   
  29:19       31:2290     32:109      34:1        35:39       36:1579   
  37:3782     38:2155     39:624      40:159      41:3847     42:937    
  43:2086     44:260      45:14965    46:3713     47:318      49:1617   
  50:1789     51:100      52:1245     54:224      55:772      56:12     
  57:52       58:1708     59:1202     60:927      61:2307     62:2274   
  63:1970     64:5349     65:2379     66:5039     67:2889     68:1167   
  69:4088     70:1387     71:681      72:3151     74:2593     75:1489   
  76:695      77:2021     78:3696     79:2301     80:1858     81:1649   
  82:1365     83:1133     84:1275     85:3403     86:713      87:1802   
  88:2699     89:2996     90:484      91:7340     92:1790     93:2538   
  94:3124     95:4459     96:1297     97:343      98:971      99:968    
 100:92      101:1045    102:1473    103:26120   104:3753    105:435    
 106:782     107:2275    108:715     109:3862    110:1994    111:3178   
 112:1963    113:1540    114:1458    115:1910    116:1880    117:2353   
 118:2349    119:1897    120:1510    121:1085    122:2492    123:2172   
 124:1583    125:2068    128:1284    129:1214    130:859     131:2020   
 132:746     133:360     134:1613    135:300     136:762     137:931    
 138:2346    139:1180    140:733     141:1181    142:1191    143:1285   
 144:1249    145:332     146:1456    147:1329    148:2186    149:1441   
 150:816     151:1073    152:1518    153:413     154:2500    155:1325   
 156:1561    157:1182    158:910     159:2003    160:2321    161:1165   
 162:3305    163:989     164:1526    165:1386    166:602     167:1778   
 168:3622    169:687     170:4266    171:771     172:2415    173:2974   
 174:995     175:1085    176:3164    177:4344    178:2902    179:1895   
 180:2273    181:2633    182:3197    183:2070    184:2400    185:18342  
 186:4206    187:3126    188:3303    189:2934    190:8861    191:1384   
 192:10684   193:8186    194:6663    195:4780    196:2867    197:2323   
 198:6070    199:6011    200:7403    201:5279    202:10552   203:10090  
 204:4654    205:3345    206:3565    207:3394    208:4006    209:4693   
 210:4245    211:2249    212:3716    213:3392    214:1207    215:61     
 216:6255    217:2562    218:1212    219:707     220:2060    221:981    
 222:881     223:1889   

End of report



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