Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 27 18:13:01 UTC 2015


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, AusNOG, SANOG, PacNOG,
CaribNOG and the RIPE Routing Working Group.

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 28 Mar, 2015

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

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

BGP routing table entries examined:                              539583
    Prefixes after maximum aggregation (per Origin AS):          205817
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      262661
Total ASes present in the Internet Routing Table:                 49834
    Prefixes per ASN:                                             10.83
Origin-only ASes present in the Internet Routing Table:           36546
Origin ASes announcing only one prefix:                           16280
Transit ASes present in the Internet Routing Table:                6292
Transit-only ASes present in the Internet Routing Table:            172
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      59
    Max AS path prepend of ASN ( 55644)                              56
Prefixes from unregistered ASNs in the Routing Table:              1158
    Unregistered ASNs in the Routing Table:                         415
Number of 32-bit ASNs allocated by the RIRs:                       9001
Number of 32-bit ASNs visible in the Routing Table:                6996
Prefixes from 32-bit ASNs in the Routing Table:                   25268
Number of bogon 32-bit ASNs visible in the Routing Table:             4
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            361
Number of addresses announced to Internet:                   2737519268
    Equivalent to 163 /8s, 43 /16s and 58 /24s
    Percentage of available address space announced:               73.9
    Percentage of allocated address space announced:               73.9
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               97.3
Total number of prefixes smaller than registry allocations:      182122

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

Prefixes being announced by APNIC Region ASes:                   132907
    Total APNIC prefixes after maximum aggregation:               38646
    APNIC Deaggregation factor:                                    3.44
Prefixes being announced from the APNIC address blocks:          138626
    Unique aggregates announced from the APNIC address blocks:    56513
APNIC Region origin ASes present in the Internet Routing Table:    5030
    APNIC Prefixes per ASN:                                       27.56
APNIC Region origin ASes announcing only one prefix:               1211
APNIC Region transit ASes present in the Internet Routing Table:    882
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         59
Number of APNIC region 32-bit ASNs visible in the Routing Table:   1362
Number of APNIC addresses announced to Internet:              747670784
    Equivalent to 44 /8s, 144 /16s and 141 /24s
    Percentage of available APNIC address space announced:         87.4

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, 131072-135580
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:                    178044
    Total ARIN prefixes after maximum aggregation:                87849
    ARIN Deaggregation factor:                                     2.03
Prefixes being announced from the ARIN address blocks:           180012
    Unique aggregates announced from the ARIN address blocks:     84168
ARIN Region origin ASes present in the Internet Routing Table:    16527
    ARIN Prefixes per ASN:                                        10.89
ARIN Region origin ASes announcing only one prefix:                6081
ARIN Region transit ASes present in the Internet Routing Table:    1707
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:     381
Number of ARIN addresses announced to Internet:              1062623008
    Equivalent to 63 /8s, 86 /16s and 87 /24s
    Percentage of available ARIN address space announced:          56.2

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, 393216-394239
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:                    130363
    Total RIPE prefixes after maximum aggregation:                65087
    RIPE Deaggregation factor:                                     2.00
Prefixes being announced from the RIPE address blocks:           136856
    Unique aggregates announced from the RIPE address blocks:     84369
RIPE Region origin ASes present in the Internet Routing Table:    17922
    RIPE Prefixes per ASN:                                         7.64
RIPE Region origin ASes announcing only one prefix:                8164
RIPE Region transit ASes present in the Internet Routing Table:    2965
Average RIPE Region AS path length visible:                         4.9
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:    3554
Number of RIPE addresses announced to Internet:               694483588
    Equivalent to 41 /8s, 100 /16s and 250 /24s
    Percentage of available RIPE address space announced:         101.0

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, 196608-202239
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:                   60045
    Total LACNIC prefixes after maximum aggregation:              11190
    LACNIC Deaggregation factor:                                   5.37
Prefixes being announced from the LACNIC address blocks:          69828
    Unique aggregates announced from the LACNIC address blocks:   32119
LACNIC Region origin ASes present in the Internet Routing Table:   2422
    LACNIC Prefixes per ASN:                                      28.83
LACNIC Region origin ASes announcing only one prefix:               624
LACNIC Region transit ASes present in the Internet Routing Table:   497
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  1593
Number of LACNIC addresses announced to Internet:             168156416
    Equivalent to 10 /8s, 5 /16s and 221 /24s
    Percentage of available LACNIC address space announced:       100.2

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-265628 + 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:                  12772
    Total AfriNIC prefixes after maximum aggregation:              3001
    AfriNIC Deaggregation factor:                                  4.26
Prefixes being announced from the AfriNIC address blocks:         13900
    Unique aggregates announced from the AfriNIC address blocks:   5166
AfriNIC Region origin ASes present in the Internet Routing Table:   735
    AfriNIC Prefixes per ASN:                                     18.91
AfriNIC Region origin ASes announcing only one prefix:              200
AfriNIC Region transit ASes present in the Internet Routing Table:  157
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  106
Number of AfriNIC addresses announced to Internet:             64134656
    Equivalent to 3 /8s, 210 /16s and 158 /24s
    Percentage of available AfriNIC address space announced:       63.7

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
 4766     2865      11553         913   Korea Telecom
17974     2795        904          78   PT Telekomunikasi Indonesia
 7545     2549        336         128   TPG Telecom Limited
 4755     1999        422         212   TATA Communications formerly 
 4538     1757       4190          71   China Education and Research 
 9829     1683       1324          35   National Internet Backbone
 9808     1553       8717          28   Guangdong Mobile Communicatio
 4808     1486       2255         440   CNCGROUP IP network China169 
 9583     1405        116         574   Sify Limited
 9498     1312        334          94   BHARTI Airtel Ltd.

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
22773     3016       2956         142   Cox Communications Inc.
 6389     2891       3688          51   BellSouth.net Inc.
 3356     2548      10683         476   Level 3 Communications, Inc.
18566     2041        379         183   MegaPath Corporation
20115     1849       1832         429   Charter Communications
 6983     1705        866         245   EarthLink, Inc.
 4323     1620       1021         409   tw telecom holdings, inc.
30036     1528        312         503   Mediacom Communications Corp
  701     1388      11270         676   MCI Communications Services, 
22561     1337        412         242   CenturyTel Internet Holdings,

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
39891     2472        128           6   SaudiNet, Saudi Telecom Compa
34984     1980        303         361   TELLCOM ILETISIM HIZMETLERI A
20940     1663        640        1232   Akamai International B.V.
 8402     1333        544          15   OJSC "Vimpelcom"
 6849     1212        356          24   JSC "Ukrtelecom"
31148     1046         45          21   Freenet Ltd.
13188     1024         96          72   TOV "Bank-Inform"
 8551      894        373          48   Bezeq International-Ltd
12479      891        801          79   France Telecom Espana SA
 9198      857        349          25   JSC Kazakhtelecom

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
10620     3153        514         209   Telmex Colombia S.A.
28573     2389       2173         118   NET Serviços de Comunicação S
 7303     1752       1150         237   Telecom Argentina S.A.
 8151     1557       3152         451   Uninet S.A. de C.V.
28024     1527        105           8   Nuevatel PCS de Bolivia S.A.
 6503     1209        421          57   Axtel, S.A.B. de C.V.
 6147     1044        374          30   Telefonica del Peru S.A.A.
 7738     1001       1882          42   Telemar Norte Leste S.A.
26615      972       2325          35   Tim Celular S.A.
 3816      921        414         153   COLOMBIA TELECOMUNICACIONES S

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
 8452     1683        958          13   TE-AS
24863      956        284          27   Link Egypt (Link.NET)
36903      479        241          90   Office National des Postes et
36992      417       1101          32   ETISALAT MISR
37492      317        159          70   Orange Tunisie
24835      299        144           9   Vodafone Data
 3741      249        857         208   Internet Solutions
29571      232         21          13   Cote d'Ivoire Telecom
36947      189        807          13   Telecom Algeria
15706      172         32           6   Sudatel (Sudan Telecom Co. Lt

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
10620     3153        514         209   Telmex Colombia S.A.
22773     3016       2956         142   Cox Communications Inc.
 6389     2891       3688          51   BellSouth.net Inc.
 4766     2865      11553         913   Korea Telecom
17974     2795        904          78   PT Telekomunikasi Indonesia
 7545     2549        336         128   TPG Telecom Limited
 3356     2548      10683         476   Level 3 Communications, Inc.
39891     2472        128           6   SaudiNet, Saudi Telecom Compa
28573     2389       2173         118   NET Serviços de Comunicação S
18566     2041        379         183   MegaPath Corporation

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

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

  ASN   No of nets  Net Savings Description
22773      3016        2874      Cox Communications Inc.
 6389      2891        2840      BellSouth.net Inc.
17974      2795        2717      PT Telekomunikasi Indonesia
39891      2472        2466      SaudiNet, Saudi Telecom Compa
 7545      2549        2421      TPG Telecom Limited
28573      2389        2271      NET Serviços de Comunicação S
 3356      2548        2072      Level 3 Communications, Inc.
 4766      2865        1952      Korea Telecom
18566      2041        1858      MegaPath Corporation
 4755      1999        1787      TATA Communications formerly 

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

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

Bad AS  Designation  Network              Transit AS  Description
30662   UNALLOCATED  8.2.129.0/24          3356       Level 3 Communicatio
53506   UNALLOCATED  8.17.102.0/23         3356       Level 3 Communicatio
46467   UNALLOCATED  8.19.192.0/24        46887       Lightower Fiber Netw
18985   UNALLOCATED  8.21.68.0/22          3356       Level 3 Communicatio
46473   UNALLOCATED  8.27.122.0/24        12180       Internap Network Ser
46473   UNALLOCATED  8.27.124.0/24        12180       Internap Network Ser
27205   UNALLOCATED  8.38.16.0/21          6461       Abovenet Communicati
15347   UNALLOCATED  8.224.147.0/24       12064       Cox Communications I
33628   UNALLOCATED  12.0.239.0/24         1239       Sprint
32805   UNALLOCATED  12.1.225.0/24         7018       AT&T Services, Inc.

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

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

Network            Origin AS  Description
5.100.241.0/24       23456     32bit Transition AS
23.226.112.0/20      62788     Bitfinite LLC
27.100.7.0/24        56096     >>UNKNOWN<<
31.217.248.0/21      44902     COVAGE NETWORKS SASU
41.73.1.0/24         37004     >>UNKNOWN<<
41.73.10.0/24        37004     >>UNKNOWN<<
41.73.11.0/24        37004     >>UNKNOWN<<
41.73.12.0/24        37004     >>UNKNOWN<<
41.73.13.0/24        37004     >>UNKNOWN<<
41.73.15.0/24        37004     >>UNKNOWN<<

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       /9:12      /10:34      /11:92      /12:264     
/13:508     /14:998     /15:1719    /16:12962   /17:7200    /18:12232   
/19:25237   /20:35823   /21:38575   /22:58422   /23:50965   /24:291542  
/25:1108    /26:1171    /27:657     /28:14      /29:11      /30:8       
/31:0       /32:13      

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

  ASN   No of nets  Total ann.   Description
39891     2432          2472      SaudiNet, Saudi Telecom Compa
22773     2228          3016      Cox Communications Inc.
18566     1996          2041      MegaPath Corporation
 6389     1671          2891      BellSouth.net Inc.
30036     1374          1528      Mediacom Communications Corp
 6983     1352          1705      EarthLink, Inc.
34984     1285          1980      TELLCOM ILETISIM HIZMETLERI A
10620     1112          3153      Telmex Colombia S.A.
11492     1101          1164      CABLE ONE, INC.
22561     1012          1337      CenturyTel Internet Holdings,

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

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

   1:1534      2:650       3:1         4:94        5:1760      6:21     
   8:1441     12:1828     13:4        14:1316     15:17       16:2      
  17:45       18:21       20:49       23:1203     24:1686     27:1856   
  31:1521     32:39       33:2        34:5        35:3        36:119    
  37:1884     38:1013     39:10       40:245      41:3024     42:264    
  43:1235     44:26       45:316      46:2138     47:36       49:881    
  50:800      52:12       54:69       55:4        56:8        57:37     
  58:1220     59:685      60:466      61:1769     62:1319     63:1911   
  64:4439     65:2262     66:4114     67:2048     68:1077     69:3263   
  70:956      71:441      72:1957     74:2653     75:321      76:406    
  77:1517     78:1270     79:807      80:1315     81:1352     82:818    
  83:678      84:678      85:1367     86:384      87:1069     88:516    
  89:1772     90:151      91:5945     92:823      93:2178     94:1971   
  95:2079     96:428      97:344      98:1071     99:47      100:68     
 101:809     103:7049    104:1464    105:62      106:225     107:914    
 108:616     109:1992    110:1079    111:1481    112:769     113:1057   
 114:837     115:1245    116:1364    117:1014    118:1696    119:1436   
 120:443     121:1040    122:2186    123:1734    124:1505    125:1579   
 128:624     129:377     130:383     131:1149    132:478     133:167    
 134:416     135:113     136:306     137:308     138:552     139:163    
 140:221     141:422     142:666     143:461     144:563     145:108    
 146:710     147:592     148:1118    149:461     150:556     151:605    
 152:493     153:240     154:378     155:737     156:410     157:333    
 158:314     159:980     160:374     161:1159    162:1950    163:415    
 164:659     165:685     166:286     167:802     168:1271    169:157    
 170:1464    171:238     172:41      173:1538    174:701     175:664    
 176:1430    177:3773    178:2050    179:1379    180:1924    181:1772   
 182:1738    183:615     184:738     185:3172    186:2760    187:1792   
 188:2007    189:1568    190:7415    191:969     192:8192    193:5600   
 194:4094    195:3658    196:1732    197:1075    198:5498    199:5516   
 200:6529    201:2990    202:9494    203:9078    204:4708    205:2819   
 206:3070    207:3009    208:3945    209:3930    210:3519    211:1865   
 212:2466    213:2274    214:855     215:70      216:5587    217:1808   
 218:675     219:451     220:1432    221:790     222:466     223:667    


End of report


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