Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 5 12:12:27 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 06 Dec, 2008

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

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

BGP routing table entries examined:                              274617
    Prefixes after maximum aggregation:                          131863
    Deaggregation factor:                                          2.08
    Unique aggregates announced to Internet:                     134033
Total ASes present in the Internet Routing Table:                 30011
    Prefixes per ASN:                                              9.15
Origin-only ASes present in the Internet Routing Table:           26135
Origin ASes announcing only one prefix:                           12734
Transit ASes present in the Internet Routing Table:                3876
Transit-only ASes present in the Internet Routing Table:             90
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      19
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               534
    Unregistered ASNs in the Routing Table:                         195
Number of 32-bit ASNs allocated by the RIRs:                         68
Prefixes from 32-bit ASNs in the Routing Table:                       9
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            200
Number of addresses announced to Internet:                   1966812160
    Equivalent to 117 /8s, 59 /16s and 44 /24s
    Percentage of available address space announced:               53.1
    Percentage of allocated address space announced:               63.4
    Percentage of available address space allocated:               83.7
    Percentage of address space in use by end-sites:               74.5
Total number of prefixes smaller than registry allocations:      134848

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

Prefixes being announced by APNIC Region ASes:                    63620
    Total APNIC prefixes after maximum aggregation:               23490
    APNIC Deaggregation factor:                                    2.71
Prefixes being announced from the APNIC address blocks:           60552
    Unique aggregates announced from the APNIC address blocks:    27265
APNIC Region origin ASes present in the Internet Routing Table:    3480
    APNIC Prefixes per ASN:                                       17.40
APNIC Region origin ASes announcing only one prefix:                936
APNIC Region transit ASes present in the Internet Routing Table:    532
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              389140384
    Equivalent to 23 /8s, 49 /16s and 207 /24s
    Percentage of available APNIC address space announced:         77.3

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:                    122610
    Total ARIN prefixes after maximum aggregation:                64581
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            91825
    Unique aggregates announced from the ARIN address blocks:     34855
ARIN Region origin ASes present in the Internet Routing Table:    12643
    ARIN Prefixes per ASN:                                         7.26
ARIN Region origin ASes announcing only one prefix:                4889
ARIN Region transit ASes present in the Internet Routing Table:    1208
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               402463648
    Equivalent to 23 /8s, 253 /16s and 27 /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:                     60947
    Total RIPE prefixes after maximum aggregation:                36408
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            56539
    Unique aggregates announced from the RIPE address blocks:     37707
RIPE Region origin ASes present in the Internet Routing Table:    12303
    RIPE Prefixes per ASN:                                         4.60
RIPE Region origin ASes announcing only one prefix:                6487
RIPE Region transit ASes present in the Internet Routing Table:    1870
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          17
Number of RIPE addresses announced to Internet:               381049312
    Equivalent to 22 /8s, 182 /16s and 89 /24s
    Percentage of available RIPE address space announced:          87.4

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:                   22671
    Total LACNIC prefixes after maximum aggregation:               5602
    LACNIC Deaggregation factor:                                   4.05
Prefixes being announced from the LACNIC address blocks:          20708
    Unique aggregates announced from the LACNIC address blocks:   11532
LACNIC Region origin ASes present in the Internet Routing Table:   1039
    LACNIC Prefixes per ASN:                                      19.93
LACNIC Region origin ASes announcing only one prefix:               337
LACNIC Region transit ASes present in the Internet Routing Table:   166
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              58495360
    Equivalent to 3 /8s, 124 /16s and 145 /24s
    Percentage of available LACNIC address space announced:        58.1

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:                   4257
    Total AfriNIC prefixes after maximum aggregation:              1360
    AfriNIC Deaggregation factor:                                  3.13
Prefixes being announced from the AfriNIC address blocks:          4568
    Unique aggregates announced from the AfriNIC address blocks:   2187
AfriNIC Region origin ASes present in the Internet Routing Table:   274
    AfriNIC Prefixes per ASN:                                     16.67
AfriNIC Region origin ASes announcing only one prefix:               85
AfriNIC Region transit ASes present in the Internet Routing Table:   54
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             13034240
    Equivalent to 0 /8s, 198 /16s and 227 /24s
    Percentage of available AfriNIC address space announced:       25.9

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         105   Hathway IP Over Cable Interne
 4766     1340       6409         364   Korea Telecom (KIX)
 4755     1169        474         153   TATA Communications formerly 
 9583     1140         88         486   Sify Limited
 4134      907      15509         355   CHINANET-BACKBONE
23577      813         34         692   Korea Telecom (ATM-MPLS)
18101      785        168          33   Reliance Infocom Ltd Internet
 4780      727        357          63   Digital United Inc.
 9498      694        295          50   BHARTI BT INTERNET LTD.
 4808      630       1172         143   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     4374       3434         344   bellsouth.net, inc. 
  209     2982       4031         619   Qwest 
20115     1848       1466         745   Charter Communications 
 1785     1703        717         155   PaeTec Communications, Inc.
 6478     1601        367         285   AT&T Worldnet Services 
 4323     1600       1068         383   Time Warner Telecom
 2386     1589        699         897   AT&T Data Communications Serv
 7018     1429       5872         989   AT&T WorldNet Services
11492     1222        192          12   Cable One 
 3356     1099      10991         428   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      433       1765         383   TDC Tele Danmark
30890      377         79         194   SC Kappa Invexim SRL
12479      373        578           6   Uni2 Autonomous System
 3301      335       1413         304   TeliaNet Sweden
 8866      331        109          22   Bulgarian Telecommunication C
29049      331         26           3   AzerSat LLC.
 3320      329       7064         278   Deutsche Telekom AG
 8452      322        188          11   TEDATA
 3215      314       2776          97   France Telecom Transpac
 8551      303        286          36   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     1396       2832         220   UniNet S.A. de C.V. 
11830      664        299           9   Instituto Costarricense de El
10620      602        132          43   TVCABLE BOGOTA 
22047      553        270          14   VTR PUNTO NET S.A. 
 7303      502        248          74   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      425         88          50   ENTEL CHILE S.A. 
11172      402        118          72   Servicios Alestra S.A de C.V 
28573      358        487          25   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      575         73          43   LINKdotNET AS number
 3741      270        857         227   The Internet Solution 
20858      265         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
 5536      120          8          17   Internet Egypt Network
 5713      119        555          68   Telkom SA Ltd 
33776      116          6           3   Starcomms Nigeria Limited
29571      113         15           8   Ci Telecom Autonomous system 

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     4374       3434         344   bellsouth.net, inc. 
  209     2982       4031         619   Qwest 
20115     1848       1466         745   Charter Communications 
 1785     1703        717         155   PaeTec Communications, Inc.
 6478     1601        367         285   AT&T Worldnet Services 
 4323     1600       1068         383   Time Warner Telecom
 2386     1589        699         897   AT&T Data Communications Serv
17488     1443        101         105   Hathway IP Over Cable Interne
 7018     1429       5872         989   AT&T WorldNet Services
 8151     1396       2832         220   UniNet S.A. de C.V. 

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

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

  ASN   No of nets  Net Savings Description
  209      2982        2363      Qwest 
 1785      1703        1548      PaeTec Communications, Inc.
17488      1443        1338      Hathway IP Over Cable Interne
 6478      1601        1316      AT&T Worldnet Services 
 4323      1600        1217      Time Warner Telecom
11492      1222        1210      Cable One 
 8151      1396        1176      UniNet S.A. de C.V. 
20115      1848        1103      Charter Communications 
18566      1059        1049      Covad Communications 
 4755      1169        1016      TATA Communications formerly 

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         3549       Global Crossing 
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      /11:55      /12:157     
/13:307     /14:553     /15:1076    /16:10193   /17:4476    /18:7742    
/19:16581   /20:19512   /21:18966   /22:24124   /23:24670   /24:143313  
/25:883     /26:1039    /27:809     /28:98      /29:8       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2858          4374      bellsouth.net, inc. 
  209     1705          2982      Qwest 
 2386     1270          1589      AT&T Data Communications Serv
17488     1232          1443      Hathway IP Over Cable Interne
11492     1197          1222      Cable One 
 1785     1163          1703      PaeTec Communications, Inc.
 6478     1126          1601      AT&T Worldnet Services 
 4766     1083          1340      Korea Telecom (KIX)
18566     1040          1059      Covad Communications 
 9583     1004          1140      Sify Limited

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

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

   4:12        8:161      12:2218     13:2        15:21       16:3      
  17:5        20:36       24:1105     32:54       38:519      40:92     
  41:811      43:1        44:2        47:7        52:3        55:3      
  56:3        57:26       58:502      59:577      60:447      61:1053   
  62:1121     63:2012     64:3303     65:2446     66:3530     67:1421   
  68:652      69:2360     70:523      71:171      72:1596     73:7      
  74:1319     75:183      76:297      77:903      78:516      79:295    
  80:938      81:867      82:580      83:410      84:587      85:1046   
  86:505      87:652      88:354      89:1417     90:43       91:1757   
  92:325      93:1049     94:775      95:50       96:91       97:140    
  98:165      99:9       100:1       110:1       111:1       113:41     
 114:134     115:166     116:1045    117:412     118:267     119:555    
 120:105     121:691     122:895     123:451     124:857     125:1269   
 128:359     129:219     130:136     131:409     132:72      133:9      
 134:190     135:31      136:225     137:123     138:144     139:86     
 140:415     141:112     142:375     143:338     144:318     145:52     
 146:373     147:142     148:605     149:212     150:142     151:210    
 152:140     153:131     154:10      155:251     156:165     157:304    
 158:166     159:299     160:273     161:131     162:252     163:136    
 164:509     165:503     166:360     167:350     168:659     169:160    
 170:462     171:40      172:10      173:123     174:10      187:14     
 188:1       189:328     190:2469    192:5823    193:4144    194:3292   
 195:2643    196:1043    198:3720    199:3329    200:5536    201:1496   
 202:7833    203:8018    204:3943    205:2195    206:2301    207:2763   
 208:3761    209:3449    210:2716    211:1138    212:1552    213:1671   
 214:75      215:25      216:4387    217:1244    218:358     219:408    
 220:1172    221:470     222:286    

End of report




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