[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 17 18:03:28 UTC 2020


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 18 Apr, 2020

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

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

BGP routing table entries examined:                              806496
    Prefixes after maximum aggregation (per Origin AS):          306294
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      393395
Total ASes present in the Internet Routing Table:                 67775
    Prefixes per ASN:                                             11.90
Origin-only ASes present in the Internet Routing Table:           58227
Origin ASes announcing only one prefix:                           24284
Transit ASes present in the Internet Routing Table:                9548
Transit-only ASes present in the Internet Routing Table:            293
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      43
    Max AS path prepend of ASN ( 27978)                              31
Prefixes from unregistered ASNs in the Routing Table:              1135
    Number of instances of unregistered ASNs:                      1138
Number of 32-bit ASNs allocated by the RIRs:                      31315
Number of 32-bit ASNs visible in the Routing Table:               25896
Prefixes from 32-bit ASNs in the Routing Table:                  119373
Number of bogon 32-bit ASNs visible in the Routing Table:            21
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            887
Number of addresses announced to Internet:                   2854764032
    Equivalent to 170 /8s, 40 /16s and 62 /24s
    Percentage of available address space announced:               77.1
    Percentage of allocated address space announced:               77.1
    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:      271711

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

Prefixes being announced by APNIC Region ASes:                   212063
    Total APNIC prefixes after maximum aggregation:               62008
    APNIC Deaggregation factor:                                    3.42
Prefixes being announced from the APNIC address blocks:          205066
    Unique aggregates announced from the APNIC address blocks:    85529
APNIC Region origin ASes present in the Internet Routing Table:   10525
    APNIC Prefixes per ASN:                                       19.48
APNIC Region origin ASes announcing only one prefix:               2927
APNIC Region transit ASes present in the Internet Routing Table:   1567
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         25
Number of APNIC region 32-bit ASNs visible in the Routing Table:   5590
Number of APNIC addresses announced to Internet:              766930816
    Equivalent to 45 /8s, 182 /16s and 111 /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, 131072-141625
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:                    235932
    Total ARIN prefixes after maximum aggregation:               108500
    ARIN Deaggregation factor:                                     2.17
Prefixes being announced from the ARIN address blocks:           233397
    Unique aggregates announced from the ARIN address blocks:    118491
ARIN Region origin ASes present in the Internet Routing Table:    18432
    ARIN Prefixes per ASN:                                        12.66
ARIN Region origin ASes announcing only one prefix:                6715
ARIN Region transit ASes present in the Internet Routing Table:    1916
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          22
Number of ARIN region 32-bit ASNs visible in the Routing Table:    3207
Number of ARIN addresses announced to Internet:              1079340032
    Equivalent to 64 /8s, 85 /16s and 108 /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, 393216-399260
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:                    229210
    Total RIPE prefixes after maximum aggregation:               105765
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           225876
    Unique aggregates announced from the RIPE address blocks:    132192
RIPE Region origin ASes present in the Internet Routing Table:    27022
    RIPE Prefixes per ASN:                                         8.36
RIPE Region origin ASes announcing only one prefix:               11738
RIPE Region transit ASes present in the Internet Routing Table:    3805
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          31
Number of RIPE region 32-bit ASNs visible in the Routing Table:    9112
Number of RIPE addresses announced to Internet:               724136832
    Equivalent to 43 /8s, 41 /16s and 115 /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:                  105790
    Total LACNIC prefixes after maximum aggregation:              24575
    LACNIC Deaggregation factor:                                   4.30
Prefixes being announced from the LACNIC address blocks:         107128
    Unique aggregates announced from the LACNIC address blocks:   46384
LACNIC Region origin ASes present in the Internet Routing Table:   9739
    LACNIC Prefixes per ASN:                                      11.00
LACNIC Region origin ASes announcing only one prefix:              2419
LACNIC Region transit ASes present in the Internet Routing Table:  1843
Average LACNIC Region AS path length visible:                       5.5
    Max LACNIC Region AS path length visible:                        43
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  7312
Number of LACNIC addresses announced to Internet:             174516992
    Equivalent to 10 /8s, 102 /16s and 235 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-270748 + 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:                  22365
    Total AfriNIC prefixes after maximum aggregation:              4707
    AfriNIC Deaggregation factor:                                  4.75
Prefixes being announced from the AfriNIC address blocks:         34142
    Unique aggregates announced from the AfriNIC address blocks:  10047
AfriNIC Region origin ASes present in the Internet Routing Table:  1383
    AfriNIC Prefixes per ASN:                                     24.69
AfriNIC Region origin ASes announcing only one prefix:              485
AfriNIC Region transit ASes present in the Internet Routing Table:  270
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       23
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  675
Number of AfriNIC addresses announced to Internet:            109336832
    Equivalent to 6 /8s, 132 /16s and 89 /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
  7545        5397        681     640  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4651       4192      73  ERX-CERNET-BKB China Education and Rese
  7552        3398       1330      22  VIETEL-AS-AP Viettel Group, VN
 45899        3145       1802     105  VNPT-AS-VN VNPT Corp, VN
  7713        2709        831     503  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9808        2544       9043      62  CMNET-GD Guangdong Mobile Communication
  4766        2288      11102     560  KIXS-AS-KR Korea Telecom, KR
  9498        2259        434     221  BBIL-AP BHARTI Airtel Ltd., IN
  4755        2135        441     192  TATACOMM-AS TATA Communications formerl
  9394        2041       4914      20  CTTNET China TieTong Telecommunications

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
 11492        4121        274     632  CABLEONE, US
  7155        4034        280      28  VIASAT-SP-BACKBONE, US
 16509        3978       7874    1759  AMAZON-02, US
 22773        3533       2969     150  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3363       1324      92  SHAW, CA
 16625        3005       1585    2171  AKAMAI-AS, US
 30036        2365        362      91  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2357       5076     535  CENTURYLINK-US-LEGACY-QWEST, US
  5650        2300       2981    1621  FRONTIER-FRTR, US
 26484        2196        137     172  IKGUL-26484, 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        5780       1603     138  UNI2-AS, ES
 31334        4765        484      13  KABELDEUTSCHLAND-AS, DE
 39891        3651        203      20  ALJAWWALSTC-AS, SA
  8551        3193        379      45  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        2957        460    2024  AKAMAI-ASN1, EU
 12389        2492       2251     725  ROSTELECOM-AS, RU
  9009        2168        229    1172  M247, GB
 34984        2056        350     563  TELLCOM-AS, TR
  9121        1878       1691      18  TTNET, TR
 13188        1606        100      36  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        6463       3307     604  Uninet S.A. de C.V., MX
 10620        3357        530     519  Telmex Colombia S.A., CO
 11830        2671        369      63  Instituto Costarricense de Electricidad
  6503        1689        327     387  Axtel, S.A.B. de C.V., MX
  7303        1553       1032     259  Telecom Argentina S.A., AR
 28573        1366       2242     203  CLARO S.A., BR
 13999        1302        486     329  Mega Cable, S.A. de C.V., MX
  6147        1139        379      39  Telefonica del Peru S.A.A., PE
  3816        1090        565     144  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11172         957        112      71  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        1470        393      22  LINKdotNET-AS, EG
 24835        1109        574      25  RAYA-AS, EG
 36992        1093       1539      76  ETISALAT-MISR, EG
 36903         890        467      88  MT-MPLS, MA
 29571         592         68      12  ORANGE-COTE-IVOIRE, CI
  6713         579       1863      34  IAM-AS, MA
 37342         480         32       1  MOVITEL, MZ
 36935         411        522      44  Vodafone-, EG
 23889         368        231      15  MauritiusTelecom, MU
 15399         337         45      10  WANANCHI-, 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        6463       3307     604  Uninet S.A. de C.V., MX
 12479        5780       1603     138  UNI2-AS, ES
  7545        5397        681     640  TPG-INTERNET-AP TPG Telecom Limited, AU
 31334        4765        484      13  KABELDEUTSCHLAND-AS, DE
  4538        4651       4192      73  ERX-CERNET-BKB China Education and Rese
 11492        4121        274     632  CABLEONE, US
  7155        4034        280      28  VIASAT-SP-BACKBONE, US
 16509        3978       7874    1759  AMAZON-02, US
 39891        3651        203      20  ALJAWWALSTC-AS, SA
 22773        3533       2969     150  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
 12479        5780         5642  UNI2-AS, ES
  7545        5397         4757  TPG-INTERNET-AP TPG Telecom Limited, AU
 31334        4765         4752  KABELDEUTSCHLAND-AS, DE
  4538        4651         4578  ERX-CERNET-BKB China Education and Research Net
  7155        4034         4006  VIASAT-SP-BACKBONE, US
 39891        3651         3631  ALJAWWALSTC-AS, SA
 11492        4121         3489  CABLEONE, US
 22773        3533         3383  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3398         3376  VIETEL-AS-AP Viettel Group, VN
  6327        3363         3271  SHAW, CA

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               174  COGENT-174, US
     62485  UNALLOCATED  8.23.229.0/24             3356  LEVEL3, US
     32985  UNALLOCATED  8.28.31.0/24              3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24              174  COGENT-174, US
     14109  UNALLOCATED  8.38.252.0/24             3356  LEVEL3, US
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
     26584  UNALLOCATED  8.42.62.0/23               209  CENTURYLINK-US-LEGACY-QWEST,
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
     40544  UNALLOCATED  12.0.33.0/24              6461  ZAYO-6461, 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
23.137.192.0/24      Origin:     31798  CANAD-86-31798, CA
                    Transit:       174  COGENT-174, 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, MY
27.126.156.0/23      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad, MY
27.126.158.0/23      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad, MY

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        /8:10       /9:11      /10:38      /11:99      /12:285     
/13:579     /14:1165    /15:1915    /16:13351   /17:8183    /18:13912   
/19:25839   /20:40482   /21:48011   /22:99841   /23:82315   /24:469179  
/25:1281    /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        4780        5780  UNI2-AS, ES
 31334        4610        4765  KABELDEUTSCHLAND-AS, DE
 11492        3241        4121  CABLEONE, US
  6327        3151        3363  SHAW, CA
  7155        3125        4034  VIASAT-SP-BACKBONE, US
 39891        2801        3651  ALJAWWALSTC-AS, SA
 22773        2751        3533  ASN-CXA-ALL-CCI-22773-RDC, US
  8551        2652        3193  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  8151        2191        6463  Uninet S.A. de C.V., MX
 30036        2112        2365  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1654      2:1145      3:30        4:19        5:3337      6:50     
   8:1403      9:1        11:1        12:1797     13:500      14:2268   
  15:75       16:9        17:299      18:81       20:83       23:3492   
  24:2269     25:2        27:2555     31:3051     32:103      34:3      
  35:41       36:925      37:3290     38:1938     39:327      40:124    
  41:3599     42:701      43:2095     44:196      45:14051    46:3708   
  47:286      49:1433     50:1243     51:93       52:1130     54:270    
  55:650      56:6        57:52       58:1775     59:1188     60:718    
  61:2234     62:2278     63:1942     64:5091     65:2300     66:4901   
  67:2859     68:1228     69:3853     70:1430     71:679      72:2877   
  74:2600     75:1434     76:681      77:2818     78:1876     79:2366   
  80:1898     81:1606     82:1298     83:1175     84:1200     85:2544   
  86:549      87:1707     88:1131     89:2702     90:315      91:7903   
  92:1493     93:2457     94:2647     95:3978     96:1092     97:335    
  98:954      99:974     100:87      101:983     102:887     103:23488  
 104:3387    105:376     106:830     107:1971    108:702     109:3710   
 110:1807    111:2000    112:1606    113:1403    114:1542    115:1843   
 116:1793    117:2091    118:2152    119:1738    120:835     121:1043   
 122:2432    123:1985    124:1555    125:2025    128:1350    129:943    
 130:631     131:1839    132:762     133:300     134:1305    135:305    
 136:610     137:845     138:2165    139:986     140:638     141:931    
 142:899     143:1229    144:973     145:329     146:1481    147:1038   
 148:2129    149:1173    150:810     151:1292    152:1488    153:379    
 154:4749    155:1045    156:3398    157:1104    158:827     159:1947   
 160:1920    161:1014    162:3046    163:856     164:1462    165:1272   
 166:535     167:1627    168:3679    169:514     170:4269    171:769    
 172:1923    173:2464    174:1014    175:1015    176:2629    177:4208   
 178:3042    179:1497    180:2321    181:2525    182:3082    183:1130   
 184:2409    185:16350   186:3792    187:2692    188:4055    189:2254   
 190:8623    191:1442    192:10347   193:7448    194:6117    195:4369   
 196:3310    197:1881    198:6107    199:5954    200:7201    201:5207   
 202:10511   203:10167   204:4520    205:3126    206:3249    207:3282   
 208:4050    209:4427    210:4011    211:2007    212:3310    213:3061   
 214:1171    215:61      216:5933    217:2404    218:876     219:609    
 220:2034    221:897     222:992     223:1468   

End of report


More information about the sanog mailing list