Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 15 12:41:28 CST 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 16 Jan, 2010

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

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

BGP routing table entries examined:                              309127
    Prefixes after maximum aggregation:                          143543
    Deaggregation factor:                                          2.15
    Unique aggregates announced to Internet:                     151934
Total ASes present in the Internet Routing Table:                 33091
    Prefixes per ASN:                                              9.34
Origin-only ASes present in the Internet Routing Table:           28731
Origin ASes announcing only one prefix:                           14027
Transit ASes present in the Internet Routing Table:                4360
Transit-only ASes present in the Internet Routing Table:            103
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      23
    Max AS path prepend of ASN ( 9503)                               21
Prefixes from unregistered ASNs in the Routing Table:               765
    Unregistered ASNs in the Routing Table:                         136
Number of 32-bit ASNs allocated by the RIRs:                        393
Prefixes from 32-bit ASNs in the Routing Table:                     345
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            185
Number of addresses announced to Internet:                   2176160448
    Equivalent to 129 /8s, 181 /16s and 146 /24s
    Percentage of available address space announced:               58.7
    Percentage of allocated address space announced:               66.5
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.8
Total number of prefixes smaller than registry allocations:      149064

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

Prefixes being announced by APNIC Region ASes:                    74756
    Total APNIC prefixes after maximum aggregation:               25793
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           71440
    Unique aggregates announced from the APNIC address blocks:    31551
APNIC Region origin ASes present in the Internet Routing Table:    3907
    APNIC Prefixes per ASN:                                       18.29
APNIC Region origin ASes announcing only one prefix:               1065
APNIC Region transit ASes present in the Internet Routing Table:    614
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              488804384
    Equivalent to 29 /8s, 34 /16s and 144 /24s
    Percentage of available APNIC address space announced:         80.9

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks    43/8,  58/8,  59/8,  60/8,  61/8, 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, 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,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    129389
    Total ARIN prefixes after maximum aggregation:                67564
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:           103522
    Unique aggregates announced from the ARIN address blocks:     39181
ARIN Region origin ASes present in the Internet Routing Table:    13450
    ARIN Prefixes per ASN:                                         7.70
ARIN Region origin ASes announcing only one prefix:                5209
ARIN Region transit ASes present in the Internet Routing Table:    1334
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               735534112
    Equivalent to 43 /8s, 215 /16s and 92 /24s
    Percentage of available ARIN address space announced:          64.5

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, 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,  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,  52/8,  54/8,  55/8,
                        56/8,  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, 108/8, 173/8,
                       174/8, 184/8, 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:                     71034
    Total RIPE prefixes after maximum aggregation:                41545
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            64168
    Unique aggregates announced from the RIPE address blocks:     42760
RIPE Region origin ASes present in the Internet Routing Table:    13981
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                7265
RIPE Region transit ASes present in the Internet Routing Table:    2100
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               413123840
    Equivalent to 24 /8s, 159 /16s and 197 /24s
    Percentage of available RIPE address space announced:          77.0

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  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, 178/8, 193/8, 194/8,
                       195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   27130
    Total LACNIC prefixes after maximum aggregation:               6521
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:          25496
    Unique aggregates announced from the LACNIC address blocks:   13826
LACNIC Region origin ASes present in the Internet Routing Table:   1230
    LACNIC Prefixes per ASN:                                      20.73
LACNIC Region origin ASes announcing only one prefix:               393
LACNIC Region transit ASes present in the Internet Routing Table:   203
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              69936128
    Equivalent to 4 /8s, 43 /16s and 36 /24s
    Percentage of available LACNIC address space announced:        69.5

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   6243
    Total AfriNIC prefixes after maximum aggregation:              1767
    AfriNIC Deaggregation factor:                                  3.53
Prefixes being announced from the AfriNIC address blocks:          4645
    Unique aggregates announced from the AfriNIC address blocks:   1589
AfriNIC Region origin ASes present in the Internet Routing Table:   338
    AfriNIC Prefixes per ASN:                                     13.74
AfriNIC Region origin ASes announcing only one prefix:               95
AfriNIC Region transit ASes present in the Internet Routing Table:   69
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       18
Number of AfriNIC addresses announced to Internet:             14818048
    Equivalent to 0 /8s, 226 /16s and 27 /24s
    Percentage of available AfriNIC address space announced:       44.2

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1857       7511         473   Korea Telecom (KIX)
17488     1464        144         140   Hathway IP Over Cable Interne
 4755     1310        303         136   TATA Communications formerly 
18101     1036        220          38   Reliance Infocom Ltd Internet
 4134     1019      19477         400   CHINANET-BACKBONE
 9583      999         75         504   Sify Limited
 7545      926        198         100   TPG Internet Pty Ltd
17974      853        272          54   PT TELEKOMUNIKASI INDONESIA
 9829      839        683          24   BSNL National Internet Backbo
 4808      837       1583         213   CNCGROUP IP network: China169

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4165       3891         302   bellsouth.net, inc. 
 4323     3785       1088         397   Time Warner Telecom
 1785     1794        699         133   PaeTec Communications, Inc.
 7018     1593       5791        1031   AT&T WorldNet Services
20115     1544       1490         671   Charter Communications 
 2386     1282        615         921   AT&T Data Communications Serv
 3356     1200      10929         423   Level 3 Communications, LLC 
11492     1128        222          14   Cable One 
22773     1124       2600          66   Cox Communications, Inc.
 6478     1103        241         273   AT&T Worldnet Services 

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
35805      470         40           5   United Telecom of Georgia
 3292      450       1903         394   TDC Tele Danmark
30890      436         98         205   Evolva Telecom
  702      421       1821         335   UUNET - Commercial IP service
 8551      397        353          37   Bezeq International
 8866      376        110          24   Bulgarian Telecommunication C
 3320      363       7068         308   Deutsche Telekom AG
 3301      355       1412         308   TeliaNet Sweden
 3215      351       3176         108   France Telecom Transpac
12479      318        578           6   Uni2 Autonomous System

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1582       2899         233   UniNet S.A. de C.V. 
10620     1003        224         131   TVCABLE BOGOTA 
28573      840        674          85   NET Servicos de Comunicao S.A
 7303      670        355         100   Telecom Argentina Stet-France
22047      547        302          14   VTR PUNTO NET S.A. 
11830      472        308          59   Instituto Costarricense de El
 6503      445        163         184   AVANTEL, S.A. 
11172      444         99          69   Servicios Alestra S.A de C.V 
14117      437         29          12   Telefonica del Sur S.A. 
 7738      431        858          29   Telecomunicacoes da Bahia S.A

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452     1018        444           8   TEDATA
24863      722        143          53   LINKdotNET AS number
36992      317         81         161   Etisalat MISR
 3741      273        857         233   The Internet Solution 
 2018      190        197         111   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      161         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      122          7          11   Starcomms Nigeria Limited
 5536      117          7          17   Internet Egypt Network

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4165       3891         302   bellsouth.net, inc. 
 4323     3785       1088         397   Time Warner Telecom
 4766     1857       7511         473   Korea Telecom (KIX)
 1785     1794        699         133   PaeTec Communications, Inc.
 7018     1593       5791        1031   AT&T WorldNet Services
 8151     1582       2899         233   UniNet S.A. de C.V. 
20115     1544       1490         671   Charter Communications 
17488     1464        144         140   Hathway IP Over Cable Interne
 4755     1310        303         136   TATA Communications formerly 
 2386     1282        615         921   AT&T Data Communications Serv

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

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

  ASN   No of nets  Net Savings Description
 4323      3785        3388      Time Warner Telecom
 1785      1794        1661      PaeTec Communications, Inc.
 4766      1857        1384      Korea Telecom (KIX)
 8151      1582        1349      UniNet S.A. de C.V. 
17488      1464        1324      Hathway IP Over Cable Interne
 4755      1310        1174      TATA Communications formerly 
11492      1128        1114      Cable One 
22773      1124        1058      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1018        1010      TEDATA

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

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

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED   12.0.252.0/23         7018       AT&T WorldNet Servic
15132   UNALLOCATED   12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         7018       AT&T WorldNet Servic
25639   UNALLOCATED   12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

Complete listing at http://thyme.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        /8:21       /9:10      /10:25      /11:66      /12:183     
/13:383     /14:656     /15:1242    /16:10877   /17:5080    /18:8662    
/19:17764   /20:21725   /21:21659   /22:27993   /23:28180   /24:161693  
/25:923     /26:1154    /27:588     /28:219     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2723          4165      bellsouth.net, inc. 
 4323     2363          3785      Time Warner Telecom
 4766     1474          1857      Korea Telecom (KIX)
 1785     1263          1794      PaeTec Communications, Inc.
17488     1230          1464      Hathway IP Over Cable Interne
11492     1048          1128      Cable One 
18566     1040          1059      Covad Communications 
 7018      960          1593      AT&T WorldNet Services
18101      916          1036      Reliance Infocom Ltd Internet
 8452      914          1018      TEDATA

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

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

   2:1         4:13        8:232      12:2016     13:10       15:22     
  16:3        17:8        20:39       24:1298     32:49       38:640    
  40:99       41:1910     44:3        46:1        47:30       52:6      
  55:2        56:2        57:23       58:631      59:644      60:445    
  61:1096     62:977      63:2004     64:3790     65:2355     66:4098   
  67:1829     68:1048     69:2839     70:689      71:228      72:1859   
  73:3        74:2079     75:220      76:354      77:870      78:574    
  79:409      80:963      81:784      82:471      83:438      84:555    
  85:1020     86:381      87:699      88:416      89:1547     90:65     
  91:2684     92:409      93:1162     94:1286     95:789      96:193    
  97:290      98:490      99:23      100:1       109:220     110:263    
 111:411     112:168     113:221     114:308     115:498     116:1125   
 117:600     118:382     119:809     120:141     121:835     122:1389   
 123:830     124:1038    125:1314    128:198     129:202     130:137    
 131:458     132:84      133:16      134:193     135:41      136:220    
 137:173     138:234     139:80      140:464     141:122     142:376    
 143:345     144:387     145:51      146:404     147:178     148:564    
 149:193     150:151     151:171     152:244     153:165     154:2      
 155:271     156:177     157:331     158:98      159:355     160:304    
 161:175     162:271     163:190     164:309     165:473     166:491    
 167:388     168:759     169:157     170:567     171:46      172:2      
 173:436     174:532     175:23      180:278     183:212     184:3      
 186:267     187:222     188:1259    189:601     190:3469    192:5725   
 193:4402    194:3350    195:2760    196:1169    198:3552    199:3395   
 200:5282    201:1468    202:8069    203:8312    204:3996    205:2173   
 206:2426    207:3051    208:3916    209:3397    210:2538    211:1178   
 212:1661    213:1649    214:253     215:60      216:4418    217:1477   
 218:481     219:443     220:1145    221:463     222:299    

End of report




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