Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 17 13:12:29 CDT 2009


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 18 Apr, 2009

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

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

BGP routing table entries examined:                              285512
    Prefixes after maximum aggregation:                          135036
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     140735
Total ASes present in the Internet Routing Table:                 30995
    Prefixes per ASN:                                              9.21
Origin-only ASes present in the Internet Routing Table:           26993
Origin ASes announcing only one prefix:                           13113
Transit ASes present in the Internet Routing Table:                4002
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:                                      33
    Max AS path prepend of ASN (43683)                               31
Prefixes from unregistered ASNs in the Routing Table:               457
    Unregistered ASNs in the Routing Table:                         153
Number of 32-bit ASNs allocated by the RIRs:                        140
Prefixes from 32-bit ASNs in the Routing Table:                      22
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            213
Number of addresses announced to Internet:                   2032726080
    Equivalent to 121 /8s, 40 /16s and 240 /24s
    Percentage of available address space announced:               54.8
    Percentage of allocated address space announced:               64.1
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               76.4
Total number of prefixes smaller than registry allocations:      140850

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

Prefixes being announced by APNIC Region ASes:                    66222
    Total APNIC prefixes after maximum aggregation:               23572
    APNIC Deaggregation factor:                                    2.81
Prefixes being announced from the APNIC address blocks:           62977
    Unique aggregates announced from the APNIC address blocks:    28795
APNIC Region origin ASes present in the Internet Routing Table:    3598
    APNIC Prefixes per ASN:                                       17.50
APNIC Region origin ASes announcing only one prefix:                966
APNIC Region transit ASes present in the Internet Routing Table:    545
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              410974496
    Equivalent to 24 /8s, 126 /16s and 249 /24s
    Percentage of available APNIC address space announced:         81.7

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:                    124873
    Total ARIN prefixes after maximum aggregation:                65846
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            94104
    Unique aggregates announced from the ARIN address blocks:     36841
ARIN Region origin ASes present in the Internet Routing Table:    12932
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4994
ARIN Region transit ASes present in the Internet Routing Table:    1253
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               426730496
    Equivalent to 25 /8s, 111 /16s and 100 /24s
    Percentage of available ARIN address space announced:          82.0

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, 108/8, 173/8,
                       174/8, 184/8, 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:                     65460
    Total RIPE prefixes after maximum aggregation:                38031
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            59789
    Unique aggregates announced from the RIPE address blocks:     39893
RIPE Region origin ASes present in the Internet Routing Table:    12842
    RIPE Prefixes per ASN:                                         4.66
RIPE Region origin ASes announcing only one prefix:                6717
RIPE Region transit ASes present in the Internet Routing Table:    1917
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          33
Number of RIPE addresses announced to Internet:               392815392
    Equivalent to 23 /8s, 105 /16s and 227 /24s
    Percentage of available RIPE address space announced:          83.6

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
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, 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:                   23655
    Total LACNIC prefixes after maximum aggregation:               5842
    LACNIC Deaggregation factor:                                   4.05
Prefixes being announced from the LACNIC address blocks:          21807
    Unique aggregates announced from the LACNIC address blocks:   11984
LACNIC Region origin ASes present in the Internet Routing Table:   1093
    LACNIC Prefixes per ASN:                                      19.95
LACNIC Region origin ASes announcing only one prefix:               348
LACNIC Region transit ASes present in the Internet Routing Table:   182
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        28
Number of LACNIC addresses announced to Internet:              62475520
    Equivalent to 3 /8s, 185 /16s and 77 /24s
    Percentage of available LACNIC address space announced:        62.1

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247
                       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:                   4879
    Total AfriNIC prefixes after maximum aggregation:              1403
    AfriNIC Deaggregation factor:                                  3.48
Prefixes being announced from the AfriNIC address blocks:          4565
    Unique aggregates announced from the AfriNIC address blocks:   1365
AfriNIC Region origin ASes present in the Internet Routing Table:   292
    AfriNIC Prefixes per ASN:                                     15.63
AfriNIC Region origin ASes announcing only one prefix:               88
AfriNIC Region transit ASes present in the Internet Routing Table:   58
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10237184
    Equivalent to 0 /8s, 156 /16s and 53 /24s
    Percentage of available AfriNIC address space announced:       30.5

AfriNIC AS Blocks      36864-37887 & 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     1692       6929         396   Korea Telecom (KIX)
17488     1536        123          97   Hathway IP Over Cable Interne
 4755     1181        405         177   TATA Communications formerly 
 9583     1090         87         539   Sify Limited
 4134      894      16580         371   CHINANET-BACKBONE
 7545      784        164         106   TPG Internet Pty Ltd
18101      755        217          31   Reliance Infocom Ltd Internet
24560      682        228         174   Bharti Airtel Ltd.
 9498      671        296          50   BHARTI BT INTERNET LTD.
 9829      640        495          21   BSNL National Internet Backbo

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     4303       3669         345   bellsouth.net, inc. 
  209     2646       4150         621   Qwest 
 4323     1834       1049         374   Time Warner Telecom
 1785     1746        717         139   PaeTec Communications, Inc.
20115     1613       1430         720   Charter Communications 
 7018     1476       5896        1016   AT&T WorldNet Services
 6478     1361        305         468   AT&T Worldnet Services 
 2386     1247        681         896   AT&T Data Communications Serv
 3356     1191      10980         453   Level 3 Communications, LLC 
11492     1172        192          11   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
 8452     1252        188           7   TEDATA
30890      538         88         200   SC Kappa Invexim SRL
 3292      451       1764         389   TDC Tele Danmark
12479      405        578           6   Uni2 Autonomous System
 3320      343       7081         294   Deutsche Telekom AG
 3215      340       3025         108   France Telecom Transpac
 3301      339       1669         305   TeliaNet Sweden
 8866      336        109          21   Bulgarian Telecommunication C
29049      321         26           3   AzerSat LLC.
35805      319         24           4   United Telecom of Georgia

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     1444       2848         231   UniNet S.A. de C.V. 
10620      859        194         101   TVCABLE BOGOTA 
22047      611        302          14   VTR PUNTO NET S.A. 
 7303      525        270          74   Telecom Argentina Stet-France
11830      516        294          34   Instituto Costarricense de El
16814      461         31          10   NSS, S.A. 
 6471      442         96          31   ENTEL CHILE S.A. 
11172      414        102          72   Servicios Alestra S.A de C.V 
28573      404        528          27   NET Servicos de Comunicao S.A
 7738      397        794          28   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
24863      855         78          35   LINKdotNET AS number
20858      297         34           4   This AS will be used to conne
 3741      277        860         237   The Internet Solution 
 2018      243        215         143   Tertiary Education Network 
 6713      159        150          15   Itissalat Al-MAGHRIB
33783      151         10           8   EEPAD TISP TELECOM & INTERNET
29571      138         15           9   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
33776      117          6           3   Starcomms Nigeria Limited
 5713      115        507          66   Telkom SA Ltd 

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     4303       3669         345   bellsouth.net, inc. 
  209     2646       4150         621   Qwest 
 4323     1834       1049         374   Time Warner Telecom
 1785     1746        717         139   PaeTec Communications, Inc.
 4766     1692       6929         396   Korea Telecom (KIX)
20115     1613       1430         720   Charter Communications 
17488     1536        123          97   Hathway IP Over Cable Interne
 7018     1476       5896        1016   AT&T WorldNet Services
 8151     1444       2848         231   UniNet S.A. de C.V. 
 6478     1361        305         468   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      2646        2025      Qwest 
 1785      1746        1607      PaeTec Communications, Inc.
 4323      1834        1460      Time Warner Telecom
17488      1536        1439      Hathway IP Over Cable Interne
 4766      1692        1296      Korea Telecom (KIX)
 8452      1252        1245      TEDATA
 8151      1444        1213      UniNet S.A. de C.V. 
11492      1172        1161      Cable One 
18566      1060        1050      Covad Communications 
 4755      1181        1004      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         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
24.55.64.0/19        36423     San Juan Cable, LLC 
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
41.220.16.0/20        8668     TelOne Zimbabwe P/L
41.223.112.0/22       5713     Telkom SA Ltd 
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       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        /8:19       /9:10      /10:20      /11:58      /12:165     
/13:335     /14:592     /15:1146    /16:10413   /17:4686    /18:7985    
/19:17011   /20:20268   /21:20061   /22:25644   /23:25322   /24:149670  
/25:718     /26:868     /27:347     /28:119     /29:37      /30:10      
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2804          4303      bellsouth.net, inc. 
 4766     1394          1692      Korea Telecom (KIX)
  209     1351          2646      Qwest 
17488     1304          1536      Hathway IP Over Cable Interne
 8452     1231          1252      TEDATA
 1785     1154          1746      PaeTec Communications, Inc.
11492     1116          1172      Cable One 
18566     1041          1060      Covad Communications 
 4323      956          1834      Time Warner Telecom
 2386      947          1247      AT&T Data Communications Serv

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

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

   4:13        8:192      12:2213     13:3        15:19       16:3      
  17:4        20:35       24:1076     32:51       38:526      40:97     
  41:2001     43:1        44:2        47:22       52:3        55:2      
  56:3        57:25       58:573      59:613      60:459      61:1108   
  62:1091     63:2024     64:3661     65:2400     66:3590     67:1511   
  68:715      69:2563     70:531      71:134      72:1647     73:2      
  74:1487     75:168      76:318      77:841      78:552      79:314    
  80:971      81:807      82:544      83:415      84:606      85:1030   
  86:390      87:633      88:358      89:1449     90:44       91:2126   
  92:341      93:1115     94:1187     95:1026     96:108      97:188    
  98:470      99:17      109:1       110:58      112:101     113:97     
 114:217     115:227     116:1156    117:498     118:287     119:670    
 120:150     121:708     122:1004    123:673     124:960     125:1307   
 128:224     129:227     130:128     131:416     132:73      133:9      
 134:184     135:214     136:242     137:149     138:148     139:79     
 140:425     141:105     142:392     143:330     144:332     145:45     
 146:372     147:151     148:520     149:237     150:149     151:199    
 152:151     153:138     154:2       155:271     156:170     157:300    
 158:127     159:301     160:282     161:134     162:273     163:149    
 164:481     165:532     166:268     167:363     168:693     169:161    
 170:473     171:38      172:10      173:270     174:176     178:1      
 186:8       187:78      188:13      189:334     190:2664    192:5805   
 193:4216    194:3303    195:2640    196:1068    198:3738    199:3312   
 200:5428    201:1332    202:7857    203:8161    204:3802    205:2152   
 206:2415    207:2808    208:3900    209:3389    210:2648    211:1101   
 212:1517    213:1689    214:71      215:30      216:4554    217:1254   
 218:361     219:425     220:1207    221:453     222:291    

End of report




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