Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 12 12:11:27 CST 2008


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 13 Dec, 2008

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

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

BGP routing table entries examined:                              274910
    Prefixes after maximum aggregation:                          131479
    Deaggregation factor:                                          2.09
    Unique aggregates announced to Internet:                     134428
Total ASes present in the Internet Routing Table:                 30074
    Prefixes per ASN:                                              9.14
Origin-only ASes present in the Internet Routing Table:           26178
Origin ASes announcing only one prefix:                           12740
Transit ASes present in the Internet Routing Table:                3896
Transit-only ASes present in the Internet Routing Table:             96
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      25
    Max AS path prepend of ASN (42115)                               21
Prefixes from unregistered ASNs in the Routing Table:               529
    Unregistered ASNs in the Routing Table:                         194
Number of 32-bit ASNs allocated by the RIRs:                         68
Prefixes from 32-bit ASNs in the Routing Table:                      10
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            210
Number of addresses announced to Internet:                   1970066112
    Equivalent to 117 /8s, 108 /16s and 210 /24s
    Percentage of available address space announced:               53.2
    Percentage of allocated address space announced:               63.5
    Percentage of available address space allocated:               83.7
    Percentage of address space in use by end-sites:               74.6
Total number of prefixes smaller than registry allocations:      134988

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

Prefixes being announced by APNIC Region ASes:                    63380
    Total APNIC prefixes after maximum aggregation:               22998
    APNIC Deaggregation factor:                                    2.76
Prefixes being announced from the APNIC address blocks:           60296
    Unique aggregates announced from the APNIC address blocks:    27407
APNIC Region origin ASes present in the Internet Routing Table:    3488
    APNIC Prefixes per ASN:                                       17.29
APNIC Region origin ASes announcing only one prefix:                937
APNIC Region transit ASes present in the Internet Routing Table:    535
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              390867936
    Equivalent to 23 /8s, 76 /16s and 43 /24s
    Percentage of available APNIC address space announced:         77.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks    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,
                       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:                    122980
    Total ARIN prefixes after maximum aggregation:                64546
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:            92217
    Unique aggregates announced from the ARIN address blocks:     35011
ARIN Region origin ASes present in the Internet Routing Table:    12650
    ARIN Prefixes per ASN:                                         7.29
ARIN Region origin ASes announcing only one prefix:                4886
ARIN Region transit ASes present in the Internet Routing Table:    1205
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               402263840
    Equivalent to 23 /8s, 250 /16s and 15 /24s
    Percentage of available ARIN address space announced:          82.7

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
ARIN Address Blocks     24/8,  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, 173/8, 174/8,
                       199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8,
                       216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     61022
    Total RIPE prefixes after maximum aggregation:                36518
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            56559
    Unique aggregates announced from the RIPE address blocks:     37770
RIPE Region origin ASes present in the Internet Routing Table:    12349
    RIPE Prefixes per ASN:                                         4.58
RIPE Region origin ASes announcing only one prefix:                6498
RIPE Region transit ASes present in the Internet Routing Table:    1883
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          25
Number of RIPE addresses announced to Internet:               382341984
    Equivalent to 22 /8s, 202 /16s and 19 /24s
    Percentage of available RIPE address space announced:          87.7

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, 47104-49151
RIPE Address Blocks     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, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   22722
    Total LACNIC prefixes after maximum aggregation:               5633
    LACNIC Deaggregation factor:                                   4.03
Prefixes being announced from the LACNIC address blocks:          20749
    Unique aggregates announced from the LACNIC address blocks:   11546
LACNIC Region origin ASes present in the Internet Routing Table:   1038
    LACNIC Prefixes per ASN:                                      19.99
LACNIC Region origin ASes announcing only one prefix:               335
LACNIC Region transit ASes present in the Internet Routing Table:   172
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              58745856
    Equivalent to 3 /8s, 128 /16s and 100 /24s
    Percentage of available LACNIC address space announced:        58.4

LACNIC AS Blocks       26592-26623, 27648-28671, 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:                   4298
    Total AfriNIC prefixes after maximum aggregation:              1363
    AfriNIC Deaggregation factor:                                  3.15
Prefixes being announced from the AfriNIC address blocks:          4600
    Unique aggregates announced from the AfriNIC address blocks:   2195
AfriNIC Region origin ASes present in the Internet Routing Table:   271
    AfriNIC Prefixes per ASN:                                     16.97
AfriNIC Region origin ASes announcing only one prefix:               84
AfriNIC Region transit ASes present in the Internet Routing Table:   56
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             13104128
    Equivalent to 0 /8s, 199 /16s and 244 /24s
    Percentage of available AfriNIC address space announced:       26.0

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 196/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
17488     1443        101          99   Hathway IP Over Cable Interne
 4766     1424       6409         364   Korea Telecom (KIX)
 4755     1171        474         152   TATA Communications formerly 
 9583     1116         88         484   Sify Limited
 4134      905      15509         354   CHINANET-BACKBONE
18101      784        168          32   Reliance Infocom Ltd Internet
 4780      729        358          64   Digital United Inc.
 9498      700        311          50   BHARTI BT INTERNET LTD.
 7545      657        152          81   TPG Internet Pty Ltd
 4808      632       1173         144   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     4385       3435         346   bellsouth.net, inc. 
  209     2981       4032         621   Qwest 
20115     1819       1418         745   Charter Communications 
 1785     1702        717         155   PaeTec Communications, Inc.
 6478     1613        369         286   AT&T Worldnet Services 
 4323     1599       1065         382   Time Warner Telecom
 2386     1588        708         901   AT&T Data Communications Serv
 7018     1428       5872         987   AT&T WorldNet Services
11492     1229        192          12   Cable One 
 3356     1094      10991         425   Level 3 Communications, LLC 

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
 3292      435       1766         384   TDC Tele Danmark
30890      378         79         194   SC Kappa Invexim SRL
12479      373        578           6   Uni2 Autonomous System
 3301      336       1413         303   TeliaNet Sweden
 8866      331        109          22   Bulgarian Telecommunication C
29049      330         26           3   AzerSat LLC.
 3320      329       7064         278   Deutsche Telekom AG
 8452      322        188          11   TEDATA
 3215      315       2792          96   France Telecom Transpac
 8551      304        287          35   Bezeq International

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     1404       2832         222   UniNet S.A. de C.V. 
11830      667        299           9   Instituto Costarricense de El
10620      631        134          52   TVCABLE BOGOTA 
22047      553        270          14   VTR PUNTO NET S.A. 
 7303      503        249          74   Telecom Argentina Stet-France
 6471      426         54          41   ENTEL CHILE S.A. 
16814      426         27          10   NSS, S.A. 
11172      400        118          72   Servicios Alestra S.A de C.V 
28573      364        489          28   NET Servicos de Comunicao S.A
14117      333         23           9   Telefonica del Sur 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
24863      585         73          43   LINKdotNET AS number
 3741      270        857         227   The Internet Solution 
20858      264         34           3   EgyNet
 2018      239        215         140   Tertiary Education Network 
 6713      144        135          11   Itissalat Al-MAGHRIB
33783      143         10          17   EEPAD TISP TELECOM & INTERNET
29571      121         15           8   Ci Telecom Autonomous system 
 5536      120          8          17   Internet Egypt Network
 5713      119        555          68   Telkom SA Ltd 
33776      116          6           3   Starcomms Nigeria Limited

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     4385       3435         346   bellsouth.net, inc. 
  209     2981       4032         621   Qwest 
20115     1819       1418         745   Charter Communications 
 1785     1702        717         155   PaeTec Communications, Inc.
 6478     1613        369         286   AT&T Worldnet Services 
 4323     1599       1065         382   Time Warner Telecom
 2386     1588        708         901   AT&T Data Communications Serv
17488     1443        101          99   Hathway IP Over Cable Interne
 7018     1428       5872         987   AT&T WorldNet Services
 4766     1424       6409         364   Korea Telecom (KIX)

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

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

  ASN   No of nets  Net Savings Description
  209      2981        2360      Qwest 
 1785      1702        1547      PaeTec Communications, Inc.
17488      1443        1344      Hathway IP Over Cable Interne
 6478      1613        1327      AT&T Worldnet Services 
 4323      1599        1217      Time Warner Telecom
11492      1229        1217      Cable One 
 8151      1404        1182      UniNet S.A. de C.V. 
20115      1819        1074      Charter Communications 
 4766      1424        1060      Korea Telecom (KIX)
18566      1060        1050      Covad Communications 

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
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.142.40.0/21        7018     AT&T WorldNet Services
24.142.160.0/19       7018     AT&T WorldNet Services
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
63.140.213.0/24      22555     Universal Talkware Corporatio
63.143.251.0/24      22555     Universal Talkware Corporatio

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        /8:19       /9:9       /10:19      /11:54      /12:158     
/13:307     /14:554     /15:1085    /16:10232   /17:4468    /18:7707    
/19:16569   /20:19491   /21:19057   /22:24149   /23:24750   /24:144035  
/25:682     /26:835     /27:615     /28:99      /29:8       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2864          4385      bellsouth.net, inc. 
  209     1705          2981      Qwest 
 2386     1267          1588      AT&T Data Communications Serv
17488     1232          1443      Hathway IP Over Cable Interne
11492     1200          1229      Cable One 
 1785     1162          1702      PaeTec Communications, Inc.
 4766     1161          1424      Korea Telecom (KIX)
 6478     1129          1613      AT&T Worldnet Services 
18566     1041          1060      Covad Communications 
 9583      980          1116      Sify Limited

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

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

   4:13        8:169      12:2221     13:2        15:21       16:3      
  17:5        20:36       24:1108     32:54       38:525      40:92     
  41:840      43:1        44:2        47:13       52:3        55:3      
  56:3        57:26       58:510      59:597      60:456      61:1058   
  62:1122     63:2012     64:3373     65:2463     66:3601     67:1437   
  68:658      69:2362     70:526      71:173      72:1592     73:7      
  74:1331     75:191      76:303      77:892      78:521      79:296    
  80:940      81:866      82:581      83:385      84:586      85:1041   
  86:506      87:652      88:355      89:1420     90:44       91:1765   
  92:305      93:1058     94:791      95:57       96:94       97:142    
  98:172      99:10      100:1       110:1       111:1       113:60     
 114:145     115:170     116:1062    117:416     118:261     119:558    
 120:105     121:696     122:903     123:452     124:858     125:1274   
 128:358     129:220     130:136     131:399     132:72      133:9      
 134:190     135:31      136:225     137:128     138:143     139:91     
 140:414     141:111     142:382     143:325     144:314     145:53     
 146:370     147:141     148:601     149:215     150:139     151:210    
 152:181     153:131     154:10      155:250     156:171     157:303    
 158:165     159:300     160:272     161:131     162:253     163:136    
 164:517     165:505     166:359     167:351     168:661     169:162    
 170:461     171:40      172:10      173:130     174:11      186:1      
 187:16      188:1       189:345     190:2512    192:5818    193:4156   
 194:3297    195:2658    196:1047    198:3703    199:3316    200:5534   
 201:1496    202:7845    203:8073    204:3931    205:2176    206:2302   
 207:2788    208:3766    209:3500    210:2742    211:1119    212:1564   
 213:1662    214:65      215:22      216:4493    217:1244    218:361    
 219:407     220:1189    221:455     222:290    

End of report




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