Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 28 12:12:28 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 29 Nov, 2008

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

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

BGP routing table entries examined:                              275422
    Prefixes after maximum aggregation:                          131996
    Deaggregation factor:                                          2.09
    Unique aggregates announced to Internet:                     133443
Total ASes present in the Internet Routing Table:                 29927
    Prefixes per ASN:                                              9.20
Origin-only ASes present in the Internet Routing Table:           26053
Origin ASes announcing only one prefix:                           12687
Transit ASes present in the Internet Routing Table:                3874
Transit-only ASes present in the Internet Routing Table:             91
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      18
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               542
    Unregistered ASNs in the Routing Table:                         198
Number of 32-bit ASNs allocated by the RIRs:                         65
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:            197
Number of addresses announced to Internet:                   1965542656
    Equivalent to 117 /8s, 39 /16s and 205 /24s
    Percentage of available address space announced:               53.0
    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:      136040

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

Prefixes being announced by APNIC Region ASes:                    63222
    Total APNIC prefixes after maximum aggregation:               23413
    APNIC Deaggregation factor:                                    2.70
Prefixes being announced from the APNIC address blocks:           60136
    Unique aggregates announced from the APNIC address blocks:    27076
APNIC Region origin ASes present in the Internet Routing Table:    3473
    APNIC Prefixes per ASN:                                       17.32
APNIC Region origin ASes announcing only one prefix:                937
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:                         17
Number of APNIC addresses announced to Internet:              388651936
    Equivalent to 23 /8s, 42 /16s and 91 /24s
    Percentage of available APNIC address space announced:         77.2

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:                    124408
    Total ARIN prefixes after maximum aggregation:                64946
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:            93756
    Unique aggregates announced from the ARIN address blocks:     34783
ARIN Region origin ASes present in the Internet Routing Table:    12620
    ARIN Prefixes per ASN:                                         7.43
ARIN Region origin ASes announcing only one prefix:                4875
ARIN Region transit ASes present in the Internet Routing Table:    1203
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               401999520
    Equivalent to 23 /8s, 246 /16s and 6 /24s
    Percentage of available ARIN address space announced:          82.6

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:                     60604
    Total RIPE prefixes after maximum aggregation:                36259
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            56206
    Unique aggregates announced from the RIPE address blocks:     37505
RIPE Region origin ASes present in the Internet Routing Table:    12249
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                6452
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:               380606560
    Equivalent to 22 /8s, 175 /16s and 152 /24s
    Percentage of available RIPE address space announced:          87.3

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:                   22517
    Total LACNIC prefixes after maximum aggregation:               5598
    LACNIC Deaggregation factor:                                   4.02
Prefixes being announced from the LACNIC address blocks:          20539
    Unique aggregates announced from the LACNIC address blocks:   11442
LACNIC Region origin ASes present in the Internet Routing Table:   1038
    LACNIC Prefixes per ASN:                                      19.79
LACNIC Region origin ASes announcing only one prefix:               339
LACNIC Region transit ASes present in the Internet Routing Table:   169
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              58459904
    Equivalent to 3 /8s, 124 /16s and 7 /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:                   4151
    Total AfriNIC prefixes after maximum aggregation:              1350
    AfriNIC Deaggregation factor:                                  3.07
Prefixes being announced from the AfriNIC address blocks:          4453
    Unique aggregates announced from the AfriNIC address blocks:   2199
AfriNIC Region origin ASes present in the Internet Routing Table:   271
    AfriNIC Prefixes per ASN:                                     16.43
AfriNIC Region origin ASes announcing only one prefix:               84
AfriNIC Region transit ASes present in the Internet Routing Table:   55
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             13028352
    Equivalent to 0 /8s, 198 /16s and 204 /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     1442        101         104   Hathway IP Over Cable Interne
 4766     1270       6409         364   Korea Telecom (KIX)
 4755     1166        474         154   TATA Communications formerly 
 9583     1135         88         481   Sify Limited
 4134      907      15536         371   CHINANET-BACKBONE
23577      803         34         692   Korea Telecom (ATM-MPLS)
18101      787        168          32   Reliance Infocom Ltd Internet
 4780      727        357          63   Digital United Inc.
 9498      688        295          50   BHARTI BT INTERNET LTD.
 7545      649        152          82   TPG Internet Pty Ltd

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     4376       3434         344   bellsouth.net, inc. 
  209     2988       4032         620   Qwest 
 6298     2168        334         632   Cox Communicatons 
20115     1841       1460         737   Charter Communications 
 1785     1701        717         154   PaeTec Communications, Inc.
 6478     1609        369         198   AT&T Worldnet Services 
 2386     1595        701         901   AT&T Data Communications Serv
 4323     1592       1068         378   Time Warner Telecom
 7018     1421       5872         982   AT&T WorldNet Services
11492     1219        192          12   Cable One 

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      432       1765         382   TDC Tele Danmark
12479      371        578           6   Uni2 Autonomous System
30890      369         80         196   SC Kappa Invexim SRL
 3301      337       1429         306   TeliaNet Sweden
29049      331         26           3   AzerSat LLC.
 8866      330        109          22   Bulgarian Telecommunication C
 3320      326       7063         275   Deutsche Telekom AG
 3215      314       2776          97   France Telecom Transpac
 8452      311        188          11   TEDATA
 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     1400       2832         221   UniNet S.A. de C.V. 
11830      664        299           9   Instituto Costarricense de El
22047      552        270          14   VTR PUNTO NET S.A. 
10620      546        122          40   TVCABLE BOGOTA 
 7303      497        244          72   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      354        483          28   NET Servicos de Comunicao S.A
14117      335         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      513         72          46   LINKdotNET AS number
 3741      270        857         226   The Internet Solution 
20858      261         34           3   EgyNet
 2018      239        215         140   Tertiary Education Network 
33783      143         10          17   EEPAD TISP TELECOM & INTERNET
 6713      137        135          11   Itissalat Al-MAGHRIB
 5536      120          8          17   Internet Egypt Network
 5713      119        555          68   Telkom SA Ltd 
33776      116          6           3   Starcomms Nigeria Limited
29571      112         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     4376       3434         344   bellsouth.net, inc. 
  209     2988       4032         620   Qwest 
 6298     2168        334         632   Cox Communicatons 
20115     1841       1460         737   Charter Communications 
 1785     1701        717         154   PaeTec Communications, Inc.
 6478     1609        369         198   AT&T Worldnet Services 
 2386     1595        701         901   AT&T Data Communications Serv
 4323     1592       1068         378   Time Warner Telecom
17488     1442        101         104   Hathway IP Over Cable Interne
 7018     1421       5872         982   AT&T WorldNet Services

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

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

  ASN   No of nets  Net Savings Description
  209      2988        2368      Qwest 
 1785      1701        1547      PaeTec Communications, Inc.
 6298      2168        1536      Cox Communicatons 
 6478      1609        1411      AT&T Worldnet Services 
17488      1442        1338      Hathway IP Over Cable Interne
 4323      1592        1214      Time Warner Telecom
11492      1219        1207      Cable One 
 8151      1400        1179      UniNet S.A. de C.V. 
20115      1841        1104      Charter Communications 
18566      1059        1049      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         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      /12:158     
/13:308     /14:550     /15:1078    /16:10184   /17:4479    /18:7721    
/19:16582   /20:19468   /21:19158   /22:24307   /23:24990   /24:143522  
/25:867     /26:1038    /27:796     /28:97      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2859          4376      bellsouth.net, inc. 
 6298     2142          2168      Cox Communicatons 
  209     1710          2988      Qwest 
 2386     1274          1595      AT&T Data Communications Serv
17488     1232          1442      Hathway IP Over Cable Interne
11492     1194          1219      Cable One 
 1785     1163          1701      PaeTec Communications, Inc.
 6478     1106          1609      AT&T Worldnet Services 
18566     1040          1059      Covad Communications 
 4766     1016          1270      Korea Telecom (KIX)

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

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

   4:12        8:160      12:2183     13:2        15:21       16:3      
  17:5        20:36       24:1125     32:54       38:487      40:93     
  41:803      43:1        44:2        47:12       52:3        55:3      
  56:3        57:26       58:497      59:564      60:458      61:1041   
  62:1123     63:2012     64:3301     65:2445     66:3515     67:1368   
  68:847      69:2365     70:898      71:171      72:2084     73:7      
  74:1313     75:171      76:288      77:898      78:523      79:288    
  80:932      81:856      82:573      83:411      84:585      85:1047   
  86:503      87:651      88:350      89:1373     90:29       91:1718   
  92:325      93:995      94:689      95:49       96:92       97:138    
  98:403      99:9       100:1       110:1       111:1       113:41     
 114:127     115:163     116:1045    117:406     118:261     119:554    
 120:106     121:665     122:893     123:444     124:843     125:1246   
 128:358     129:219     130:136     131:410     132:72      133:9      
 134:187     135:31      136:223     137:116     138:144     139:86     
 140:414     141:111     142:371     143:303     144:308     145:52     
 146:373     147:143     148:607     149:212     150:143     151:210    
 152:141     153:131     154:10      155:276     156:165     157:302    
 158:168     159:298     160:273     161:132     162:251     163:132    
 164:518     165:513     166:361     167:341     168:650     169:155    
 170:459     171:40      172:10      173:126     174:7       187:18     
 188:1       189:324     190:2433    192:5823    193:4155    194:3288   
 195:2613    196:1020    198:3710    199:3313    200:5535    201:1476   
 202:7632    203:8060    204:3924    205:2188    206:2305    207:2761   
 208:3754    209:3438    210:2633    211:1132    212:1545    213:1637   
 214:70      215:25      216:4393    217:1241    218:359     219:419    
 220:1094    221:458     222:312    

End of report




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