[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 23 18:02:45 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 Apr, 2021

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

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

BGP routing table entries examined:                              857293
    Prefixes after maximum aggregation (per Origin AS):          324456
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      406443
Total ASes present in the Internet Routing Table:                 71149
    Prefixes per ASN:                                             12.05
Origin-only ASes present in the Internet Routing Table:           61197
Origin ASes announcing only one prefix:                           25304
Transit ASes present in the Internet Routing Table:                9952
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:                                      38
    Max AS path prepend of ASN ( 37385)                              33
Prefixes from unregistered ASNs in the Routing Table:              1013
    Number of instances of unregistered ASNs:                      1024
Number of 32-bit ASNs allocated by the RIRs:                      35805
Number of 32-bit ASNs visible in the Routing Table:               29816
Prefixes from 32-bit ASNs in the Routing Table:                  138622
Number of bogon 32-bit ASNs visible in the Routing Table:            26
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            497
Number of addresses announced to Internet:                   3031282560
    Equivalent to 180 /8s, 173 /16s and 179 /24s
    Percentage of available address space announced:               81.9
    Percentage of allocated address space announced:               81.9
    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:      291090

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

Prefixes being announced by APNIC Region ASes:                   226990
    Total APNIC prefixes after maximum aggregation:               65614
    APNIC Deaggregation factor:                                    3.46
Prefixes being announced from the APNIC address blocks:          223063
    Unique aggregates announced from the APNIC address blocks:    89596
APNIC Region origin ASes present in the Internet Routing Table:   11532
    APNIC Prefixes per ASN:                                       19.34
APNIC Region origin ASes announcing only one prefix:               3302
APNIC Region transit ASes present in the Internet Routing Table:   1622
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         30
Number of APNIC region 32-bit ASNs visible in the Routing Table:   6680
Number of APNIC addresses announced to Internet:              771997952
    Equivalent to 46 /8s, 3 /16s and 193 /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, 131072-143673
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:                    246095
    Total ARIN prefixes after maximum aggregation:               113015
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           246524
    Unique aggregates announced from the ARIN address blocks:    117903
ARIN Region origin ASes present in the Internet Routing Table:    18782
    ARIN Prefixes per ASN:                                        13.13
ARIN Region origin ASes announcing only one prefix:                6813
ARIN Region transit ASes present in the Internet Routing Table:    1950
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          29
Number of ARIN region 32-bit ASNs visible in the Routing Table:    3832
Number of ARIN addresses announced to Internet:              1264127744
    Equivalent to 75 /8s, 89 /16s and 15 /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:                    244552
    Total RIPE prefixes after maximum aggregation:               113812
    RIPE Deaggregation factor:                                     2.15
Prefixes being announced from the RIPE address blocks:           240539
    Unique aggregates announced from the RIPE address blocks:    141455
RIPE Region origin ASes present in the Internet Routing Table:    27905
    RIPE Prefixes per ASN:                                         8.62
RIPE Region origin ASes announcing only one prefix:               11992
RIPE Region transit ASes present in the Internet Routing Table:    3888
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          38
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10142
Number of RIPE addresses announced to Internet:               711050880
    Equivalent to 42 /8s, 97 /16s and 198 /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:                  112705
    Total LACNIC prefixes after maximum aggregation:              26332
    LACNIC Deaggregation factor:                                   4.28
Prefixes being announced from the LACNIC address blocks:         113867
    Unique aggregates announced from the LACNIC address blocks:   46980
LACNIC Region origin ASes present in the Internet Routing Table:  10738
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2702
LACNIC Region transit ASes present in the Internet Routing Table:  2025
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        33
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8361
Number of LACNIC addresses announced to Internet:             176082944
    Equivalent to 10 /8s, 126 /16s and 208 /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:                  25937
    Total AfriNIC prefixes after maximum aggregation:              4937
    AfriNIC Deaggregation factor:                                  5.25
Prefixes being announced from the AfriNIC address blocks:         32803
    Unique aggregates announced from the AfriNIC address blocks:  10059
AfriNIC Region origin ASes present in the Internet Routing Table:  1457
    AfriNIC Prefixes per ASN:                                     22.51
AfriNIC Region origin ASes announcing only one prefix:              495
AfriNIC Region transit ASes present in the Internet Routing Table:  297
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       38
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  801
Number of AfriNIC addresses announced to Internet:            107602432
    Equivalent to 6 /8s, 105 /16s and 226 /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        6346       8996      55  CMNET-GD Guangdong Mobile Communication
  7545        5732        783     669  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4754       4192      74  ERX-CERNET-BKB China Education and Rese
  7713        3523       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
  7552        3482       1330      20  VIETEL-AS-AP Viettel Group, VN
 45899        2901       1896      54  VNPT-AS-VN VNPT Corp, VN
  4766        2434      11104     565  KIXS-AS-KR Korea Telecom, KR
  9498        2336        481     236  BBIL-AP BHARTI Airtel Ltd., IN
  4755        2119        441     191  TATACOMM-AS TATA Communications formerl
 45090        2098       1197      72  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        5030       9345    2242  AMAZON-02, US
 11492        4752        315     712  CABLEONE, US
  7155        4030        264      32  VIASAT-SP-BACKBONE, US
 22773        3935       3005     249  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3430       1767    2427  AKAMAI-AS, US
  6327        3360       1317      69  SHAW, CA
 30036        2559        373     127  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2531       5037     484  CENTURYLINK-US-LEGACY-QWEST, US
  5650        2345       2997    1640  FRONTIER-FRTR, US
  5972        2231        451     784  DNIC-ASBLK-05800-06055, 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        7796       1045    3498  TTNET, TR
 12479        6489       1725     144  UNI2-AS, ES
 20940        3579       3347     204  AKAMAI-ASN1, NL
  8551        3351        379      41  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3266        187      22  ALJAWWALSTC-AS, SA
 12389        2908       2284     898  ROSTELECOM-AS, RU
  9009        2413        247    1290  M247, GB
 34984        2216        357     586  TELLCOM-AS, TR
 13188        1610        100      31  TRIOLAN, UA
 58224        1580        883     574  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        8518       3474     575  Uninet S.A. de C.V., MX
 10620        3412        526     615  Telmex Colombia S.A., CO
 11830        2494        369      62  Instituto Costarricense de Electricidad
  7303        1899       2063      72  Telecom Argentina S.A., AR
 13999        1672        447     424  Mega Cable, S.A. de C.V., MX
  6503        1443        311     475  Axtel, S.A.B. de C.V., MX
 28573        1386       2276     224  CLARO S.A., BR
  3816        1229        644     147  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1130        377      39  Telefonica del Peru S.A.A., PE
 11664        1002        212     400  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        1586        393      22  LINKdotNET-AS, EG
 24835        1443        486      27  RAYA-AS, EG
 36992        1202       1537     176  ETISALAT-MISR, EG
 36903        1181        536     114  MT-MPLS, MA
 29571         731         68      11  ORANGE-COTE-IVOIRE, CI
  6713         549       1863      34  IAM-AS, MA
 36935         517        522      40  Vodafone-, EG
 37342         487         32       1  MOVITEL, MZ
 15399         483         48      24  WANANCHI-, KE
 23889         439        232      16  MauritiusTelecom, MU

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        8518       3474     575  Uninet S.A. de C.V., MX
 47331        7796       1045    3498  TTNET, TR
 12479        6489       1725     144  UNI2-AS, ES
  9808        6346       8996      55  CMNET-GD Guangdong Mobile Communication
  7545        5732        783     669  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5030       9345    2242  AMAZON-02, US
  4538        4754       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4752        315     712  CABLEONE, US
  7155        4030        264      32  VIASAT-SP-BACKBONE, US
 22773        3935       3005     249  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        6489         6345  UNI2-AS, ES
  9808        6346         6291  CMNET-GD Guangdong Mobile Communication Co.Ltd.
  7545        5732         5063  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4754         4680  ERX-CERNET-BKB China Education and Research Net
 47331        7796         4298  TTNET, TR
 11492        4752         4040  CABLEONE, US
  7155        4030         3998  VIASAT-SP-BACKBONE, US
 22773        3935         3686  ASN-CXA-ALL-CCI-22773-RDC, US
  7713        3523         3467  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID
  7552        3482         3462  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
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
     46766  UNALLOCATED  8.44.208.0/24             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:    398481  REDMERCURY, US
                    Transit:    209319  IPV6ROUTING, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
                    Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
27.126.156.0/22      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala
27.126.156.0/23      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala

Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:41      /11:103     /12:297     
/13:586     /14:1193    /15:1947    /16:13532   /17:8334    /18:13883   
/19:25773   /20:42564   /21:51465   /22:106771  /23:91238   /24:498129  
/25:1408    /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        6976        7796  TTNET, TR
 12479        5442        6489  UNI2-AS, ES
 11492        3803        4752  CABLEONE, US
  6327        3168        3360  SHAW, CA
  7155        3118        4030  VIASAT-SP-BACKBONE, US
  8151        3084        8518  Uninet S.A. de C.V., MX
 22773        2964        3935  ASN-CXA-ALL-CCI-22773-RDC, US
  8551        2815        3351  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 39891        2801        3266  ALJAWWALSTC-AS, SA
 30036        2234        2559  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1882      2:1107      3:111       4:19        5:3527      6:65     
   7:5         8:1502      9:1        11:36       12:1748     13:362    
  14:2303     15:76       16:15       17:320      18:93       20:128    
  22:188      23:4654     24:2386     25:2        27:2524     29:19     
  31:2326     32:113      34:2        35:40       36:1318     37:3762   
  38:2068     39:610      40:160      41:3863     42:926      43:2118   
  44:239      45:14968    46:3704     47:319      49:1615     50:1773   
  51:92       52:1236     54:223      55:755      56:8        57:58     
  58:1716     59:1206     60:889      61:2365     62:2224     63:1959   
  64:5286     65:2382     66:5159     67:2860     68:1154     69:4075   
  70:1399     71:690      72:3182     74:2587     75:1486     76:685    
  77:2031     78:3697     79:2490     80:1867     81:1651     82:1361   
  83:1122     84:1271     85:3381     86:708      87:1781     88:2698   
  89:3009     90:443      91:7316     92:1750     93:2539     94:3111   
  95:4438     96:1268     97:345      98:990      99:969     100:92     
 101:1052    102:1409    103:25991   104:3739    105:435     106:725    
 107:2256    108:707     109:4026    110:2007    111:2940    112:1970   
 113:1622    114:1468    115:1891    116:1901    117:2313    118:2331   
 119:1900    120:1103    121:1079    122:2266    123:2209    124:1571   
 125:2082    128:1365    129:965     130:848     131:2036    132:753    
 133:356     134:1595    135:290     136:746     137:923     138:2296   
 139:1175    140:735     141:1190    142:1154    143:1265    144:1261   
 145:331     146:1412    147:1308    148:2213    149:1411    150:806    
 151:1079    152:1548    153:394     154:2387    155:1318    156:1495   
 157:1178    158:916     159:2041    160:2117    161:1142    162:3291   
 163:983     164:1504    165:1389    166:594     167:1772    168:3567   
 169:681     170:4172    171:765     172:2140    173:2946    174:988    
 175:1084    176:3115    177:4335    178:2899    179:1969    180:2321   
 181:2591    182:3207    183:1857    184:2426    185:18182   186:4203   
 187:3188    188:3299    189:2847    190:8848    191:1370    192:10670  
 193:8021    194:6592    195:4724    196:2881    197:2380    198:6057   
 199:6026    200:7410    201:5334    202:10571   203:10089   204:4657   
 205:3335    206:3557    207:3348    208:4018    209:4662    210:4236   
 211:2190    212:3678    213:3339    214:1229    215:61      216:6185   
 217:2539    218:1161    219:709     220:2089    221:977     222:965    
 223:1863   

End of report


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