[menog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 26 18:03:20 UTC 2019


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 27 Apr, 2019

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

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

BGP routing table entries examined:                              748157
    Prefixes after maximum aggregation (per Origin AS):          287073
    Deaggregation factor:                                          2.61
    Unique aggregates announced (without unneeded subnets):      360249
Total ASes present in the Internet Routing Table:                 63999
    Prefixes per ASN:                                             11.69
Origin-only ASes present in the Internet Routing Table:           55033
Origin ASes announcing only one prefix:                           23727
Transit ASes present in the Internet Routing Table:                8966
Transit-only ASes present in the Internet Routing Table:            278
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      40
    Max AS path prepend of ASN ( 22394)                              37
Prefixes from unregistered ASNs in the Routing Table:                24
    Number of instances of unregistered ASNs:                        27
Number of 32-bit ASNs allocated by the RIRs:                      26729
Number of 32-bit ASNs visible in the Routing Table:               21812
Prefixes from 32-bit ASNs in the Routing Table:                   95805
Number of bogon 32-bit ASNs visible in the Routing Table:            20
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            236
Number of addresses announced to Internet:                   2850096512
    Equivalent to 169 /8s, 225 /16s and 5 /24s
    Percentage of available address space announced:               77.0
    Percentage of allocated address space announced:               77.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.2
Total number of prefixes smaller than registry allocations:      250340

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

Prefixes being announced by APNIC Region ASes:                   201578
    Total APNIC prefixes after maximum aggregation:               58375
    APNIC Deaggregation factor:                                    3.45
Prefixes being announced from the APNIC address blocks:          198234
    Unique aggregates announced from the APNIC address blocks:    82785
APNIC Region origin ASes present in the Internet Routing Table:    9678
    APNIC Prefixes per ASN:                                       20.48
APNIC Region origin ASes announcing only one prefix:               2708
APNIC Region transit ASes present in the Internet Routing Table:   1440
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         29
Number of APNIC region 32-bit ASNs visible in the Routing Table:   4677
Number of APNIC addresses announced to Internet:              773820800
    Equivalent to 46 /8s, 31 /16s and 145 /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, 131072-139577
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:                    222607
    Total ARIN prefixes after maximum aggregation:               104561
    ARIN Deaggregation factor:                                     2.13
Prefixes being announced from the ARIN address blocks:           221648
    Unique aggregates announced from the ARIN address blocks:    105453
ARIN Region origin ASes present in the Internet Routing Table:    18445
    ARIN Prefixes per ASN:                                        12.02
ARIN Region origin ASes announcing only one prefix:                6851
ARIN Region transit ASes present in the Internet Routing Table:    1907
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          40
Number of ARIN region 32-bit ASNs visible in the Routing Table:    2678
Number of ARIN addresses announced to Internet:              1078683008
    Equivalent to 64 /8s, 75 /16s and 101 /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,  45/8,  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:                    206049
    Total RIPE prefixes after maximum aggregation:                98153
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           202399
    Unique aggregates announced from the RIPE address blocks:    120183
RIPE Region origin ASes present in the Internet Routing Table:    25990
    RIPE Prefixes per ASN:                                         7.79
RIPE Region origin ASes announcing only one prefix:               11533
RIPE Region transit ASes present in the Internet Routing Table:    3705
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:    8042
Number of RIPE addresses announced to Internet:               718891648
    Equivalent to 42 /8s, 217 /16s and 106 /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
                       196608-210331
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:                   96408
    Total LACNIC prefixes after maximum aggregation:              21667
    LACNIC Deaggregation factor:                                   4.45
Prefixes being announced from the LACNIC address blocks:          97780
    Unique aggregates announced from the LACNIC address blocks:   42467
LACNIC Region origin ASes present in the Internet Routing Table:   8315
    LACNIC Prefixes per ASN:                                      11.76
LACNIC Region origin ASes announcing only one prefix:              2194
LACNIC Region transit ASes present in the Internet Routing Table:  1537
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  5861
Number of LACNIC addresses announced to Internet:             173704448
    Equivalent to 10 /8s, 90 /16s and 133 /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:                  21490
    Total AfriNIC prefixes after maximum aggregation:              4298
    AfriNIC Deaggregation factor:                                  5.00
Prefixes being announced from the AfriNIC address blocks:         27860
    Unique aggregates announced from the AfriNIC address blocks:   9142
AfriNIC Region origin ASes present in the Internet Routing Table:  1277
    AfriNIC Prefixes per ASN:                                     21.82
AfriNIC Region origin ASes announcing only one prefix:              441
AfriNIC Region transit ASes present in the Internet Routing Table:  245
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  554
Number of AfriNIC addresses announced to Internet:            104743936
    Equivalent to 6 /8s, 62 /16s and 68 /24s
AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 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         4733        546     552  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538         4708       4192      74  ERX-CERNET-BKB China Education and Rese
  7552         3134       1307      54  VIETEL-AS-AP Viettel Group, VN
 45899         3014       1738     112  VNPT-AS-VN VNPT Corp, VN
  9829         2733       1496     551  BSNL-NIB National Internet Backbone, IN
  4766         2547      11120     761  KIXS-AS-KR Korea Telecom, KR
  9808         2448       8699      27  CMNET-GD Guangdong Mobile Communication
  9394         2176       4898      27  CTTNET China TieTong Telecommunications
  4755         2147        429     185  TATACOMM-AS TATA Communications formerl
  9498         2049        427     171  BBIL-AP BHARTI Airtel Ltd., IN

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         3645        238     584  CABLEONE - CABLE ONE, INC., US
  6327         3615       1325      93  SHAW - Shaw Communications Inc., CA
 22773         3399       2976     161  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
 16509         2677       5944    1122  AMAZON-02 - Amazon.com, Inc., US
 16625         2409       1320    1821  AKAMAI-AS - Akamai Technologies, Inc., 
  7155         2239        280      25  VIASAT-SP-BACKBONE - ViaSat,Inc., US
 30036         2174        356     112  MEDIACOM-ENTERPRISE-BUSINESS - Mediacom
 20115         2148       2751     525  CHARTER-20115 - Charter Communications,
 18566         2107        405     108  MEGAPATH5-US - MegaPath Corporation, US
  5650         2086       3074    1462  FRONTIER-FRTR - Frontier Communications

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         5432       1629     140  UNI2-AS, ES
 39891         3778        203      20  ALJAWWALSTC-AS, SA
  8551         3233        378      45  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940         2634        525    1908  AKAMAI-ASN1, US
 12389         2247       2222     650  ROSTELECOM-AS, RU
 34984         2078        343     540  TELLCOM-AS, TR
  9121         1669       1692      18  TTNET, TR
 13188         1605        100      47  TRIOLAN, UA
  9009         1422        148     773  M247, GB
  8402         1236        545      15  CORBINA-AS OJSC "Vimpelcom", RU

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         5708       3346     599  Uninet S.A. de C.V., MX
 10620         3446        538     377  Telmex Colombia S.A., CO
 11830         2708        384      34  Instituto Costarricense de Electricidad
  7303         1475       1012     251  Telecom Argentina S.A., AR
 28573         1344       2226     202  CLARO S.A., BR
  6503         1258        433      53  Axtel, S.A.B. de C.V., MX
  6147         1158        377      30  Telefonica del Peru S.A.A., PE
  3816         1083        515     141  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11172          955        144      64  Alestra, S. de R.L. de C.V., MX
 13999          952        512     241  Mega Cable, S.A. 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         1225        393      21  LINKdotNET-AS, EG
 37611          896        107       9  Afrihost, ZA
 24835          888        648      21  RAYA-AS, EG
 36992          852       1531      68  ETISALAT-MISR, EG
 36903          827        416     126  MT-MPLS, MA
  8452          705       1731      19  TE-AS TE-AS, EG
 29571          514         70      12  ORANGE-COTE-IVOIRE, CI
 37492          470        470      57  ORANGE-, TN
 15706          421         32       6  Sudatel, SD
 37342          420         32       1  MOVITEL, MZ

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         5708       3346     599  Uninet S.A. de C.V., MX
 12479         5432       1629     140  UNI2-AS, ES
  7545         4733        546     552  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538         4708       4192      74  ERX-CERNET-BKB China Education and Rese
 39891         3778        203      20  ALJAWWALSTC-AS, SA
 11492         3645        238     584  CABLEONE - CABLE ONE, INC., US
  6327         3615       1325      93  SHAW - Shaw Communications Inc., CA
 10620         3446        538     377  Telmex Colombia S.A., CO
 22773         3399       2976     161  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
  8551         3233        378      45  BEZEQ-INTERNATIONAL-AS Bezeqint Interne

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

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings  Description
 12479       5432         5292   UNI2-AS, ES
  4538       4708         4634   ERX-CERNET-BKB China Education and Research Net
  7545       4733         4181   TPG-INTERNET-AP TPG Telecom Limited, AU
 39891       3778         3758   ALJAWWALSTC-AS, SA
  6327       3615         3522   SHAW - Shaw Communications Inc., CA
 22773       3399         3238   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
  8551       3233         3188   BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7552       3134         3080   VIETEL-AS-AP Viettel Group, VN
 10620       3446         3069   Telmex Colombia S.A., CO
 11492       3645         3061   CABLEONE - CABLE ONE, INC., US

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS    Designation  Network              Transit AS  Description
 230105   UNALLOCATED  38.110.79.0/24       23015       CMC180-TOR-AS - Cambridge Merc
 266842   UNALLOCATED  45.238.156.0/22     265680       HNTELCO S.A, HN
  65550   DOCUMENT     81.8.34.0/24         15924       BORUSANTELEKOM-AS, TR
  65550   DOCUMENT     81.8.35.0/24         15924       BORUSANTELEKOM-AS, TR
  65549   DOCUMENT     117.239.163.0/24     65544       UNKNOWN
  64339   UNALLOCATED  143.0.108.0/22       18747       IFX18747 - IFX Corporation, US
  64355   UNALLOCATED  156.40.196.0/24      30387       NIH-NET-NCCS - National Instit
  64011   UNALLOCATED  166.133.128.0/18     20057       ATT-MOBILITY-LLC-AS20057 - AT&
  64011   UNALLOCATED  166.133.192.0/18     20057       ATT-MOBILITY-LLC-AS20057 - AT&
  64011   UNALLOCATED  166.184.9.0/24       20057       ATT-MOBILITY-LLC-AS20057 - AT&

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
27.100.7.0/24        56096    UNKNOWN
27.126.156.0/22      55827    UNKNOWN
27.126.156.0/23      55827    UNKNOWN
27.126.158.0/23      55827    UNKNOWN
41.76.136.0/22       37500    -Reserved AS-, ZZ
41.76.140.0/22       37500    -Reserved AS-, ZZ
41.78.92.0/22        14988    BTC-GATE1, BW
41.78.180.0/23       37265    -Reserved AS-, ZZ
41.220.48.0/20       36900    -Reserved AS-, ZZ
41.242.92.0/24       37643    -Reserved AS-, ZZ

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        /8:12       /9:10      /10:37      /11:100     /12:294     
/13:569     /14:1131    /15:1908    /16:13381   /17:7974    /18:13916   
/19:25655   /20:40189   /21:46290   /22:93515   /23:75952   /24:426191  
/25:1033    /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     4356          5432    UNI2-AS, ES
  6327     3390          3615    SHAW - Shaw Communications Inc., CA
 39891     2946          3778    ALJAWWALSTC-AS, SA
 11492     2854          3645    CABLEONE - CABLE ONE, INC., US
  8551     2687          3233    BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773     2634          3399    ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
 11830     2053          2708    Instituto Costarricense de Electricidad y Telec
 18566     2002          2107    MEGAPATH5-US - MegaPath Corporation, US
 30036     1921          2174    MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi
  7155     1913          2239    VIASAT-SP-BACKBONE - ViaSat,Inc., US

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

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

   1:1597      2:984       3:6         4:21        5:3124      6:45     
   7:1         8:1286      9:1        12:1802     13:334      14:1981   
  15:36       16:4        17:252      18:58       20:50       23:2673   
  24:2497     25:2        27:2483     31:1977     32:100      35:36     
  36:853      37:3031     38:1735     39:297      40:121      41:3293   
  42:780      43:2026     44:149      45:7378     46:3261     47:262    
  49:1366     50:1109     51:322      52:1015     54:283      55:704    
  56:6        57:43       58:1792     59:1075     60:501      61:2124   
  62:2128     63:1831     64:4948     65:2226     66:4836     67:2760   
  68:1178     69:3530     70:1335     71:617      72:2521     74:2754   
  75:693      76:543      77:1762     78:1811     79:2290     80:1807   
  81:1510     82:1127     83:934      84:1134     85:2275     86:523    
  87:1543     88:1054     89:2597     90:216      91:6571     92:1378   
  93:2476     94:2516     95:3248     96:941      97:344      98:956    
  99:508     100:87      101:1157    102:544     103:21062   104:3545   
 105:256     106:782     107:1787    108:686     109:3723    110:1655   
 111:1973    112:1486    113:1404    114:1142    115:1723    116:1749   
 117:1904    118:2189    119:1626    120:1021    121:1042    122:2356   
 123:1650    124:1470    125:1958    128:1232    129:832     130:536    
 131:1805    132:794     133:222     134:1088    135:241     136:570    
 137:749     138:2056    139:864     140:645     141:875     142:801    
 143:1048    144:890     145:494     146:1261    147:831     148:1717   
 149:831     150:788     151:1012    152:1059    153:335     154:2901   
 155:917     156:1635    157:964     158:657     159:1948    160:1602   
 161:927     162:2757    163:811     164:1198    165:1589    166:434    
 167:1392    168:3269    169:876     170:4115    171:579     172:1251   
 173:2211    174:1041    175:923     176:2325    177:4150    178:2544   
 179:1396    180:2092    181:2418    182:2676    183:1090    184:1709   
 185:14999   186:3683    187:2445    188:2949    189:1981    190:8272   
 191:1594    192:10063   193:6654    194:5419    195:4116    196:3151   
 197:1777    198:5897    199:5989    200:7134    201:5092    202:10413  
 203:10091   204:4554    205:3039    206:3232    207:3232    208:3959   
 209:4241    210:3923    211:2009    212:3145    213:2919    214:1108   
 215:55      216:5922    217:2235    218:882     219:584     220:1857   
 221:968     222:992     223:1369   

End of report


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