Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 10 13:12:24 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 11 Jul, 2009

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

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

BGP routing table entries examined:                              290262
    Prefixes after maximum aggregation:                          137789
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     144391
Total ASes present in the Internet Routing Table:                 31706
    Prefixes per ASN:                                              9.15
Origin-only ASes present in the Internet Routing Table:           27560
Origin ASes announcing only one prefix:                           13420
Transit ASes present in the Internet Routing Table:                4146
Transit-only ASes present in the Internet Routing Table:            100
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               474
    Unregistered ASNs in the Routing Table:                         132
Number of 32-bit ASNs allocated by the RIRs:                        198
Prefixes from 32-bit ASNs in the Routing Table:                      71
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            345
Number of addresses announced to Internet:                   2087524224
    Equivalent to 124 /8s, 109 /16s and 23 /24s
    Percentage of available address space announced:               56.3
    Percentage of allocated address space announced:               65.2
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               78.3
Total number of prefixes smaller than registry allocations:      143711

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

Prefixes being announced by APNIC Region ASes:                    69187
    Total APNIC prefixes after maximum aggregation:               24705
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           68608
    Unique aggregates announced from the APNIC address blocks:    31331
APNIC Region origin ASes present in the Internet Routing Table:    3695
    APNIC Prefixes per ASN:                                       18.57
APNIC Region origin ASes announcing only one prefix:               1009
APNIC Region transit ASes present in the Internet Routing Table:    577
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              469024448
    Equivalent to 27 /8s, 244 /16s and 190 /24s
    Percentage of available APNIC address space announced:         87.4

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,
                       180/8, 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:                    123512
    Total ARIN prefixes after maximum aggregation:                65893
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:           124200
    Unique aggregates announced from the ARIN address blocks:     52016
ARIN Region origin ASes present in the Internet Routing Table:    13085
    ARIN Prefixes per ASN:                                         9.49
ARIN Region origin ASes announcing only one prefix:                5027
ARIN Region transit ASes present in the Internet Routing Table:    1279
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1027107904
    Equivalent to 61 /8s, 56 /16s and 108 /24s
    Percentage of available ARIN address space announced:         197.5

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
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:                     66575
    Total RIPE prefixes after maximum aggregation:                39344
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            66212
    Unique aggregates announced from the RIPE address blocks:     44657
RIPE Region origin ASes present in the Internet Routing Table:    13271
    RIPE Prefixes per ASN:                                         4.99
RIPE Region origin ASes announcing only one prefix:                6926
RIPE Region transit ASes present in the Internet Routing Table:    1987
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          22
Number of RIPE addresses announced to Internet:               496541888
    Equivalent to 29 /8s, 152 /16s and 160 /24s
    Percentage of available RIPE address space announced:         105.7

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, 47104-52223
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:                   24417
    Total LACNIC prefixes after maximum aggregation:               6023
    LACNIC Deaggregation factor:                                   4.05
Prefixes being announced from the LACNIC address blocks:          24331
    Unique aggregates announced from the LACNIC address blocks:   13563
LACNIC Region origin ASes present in the Internet Routing Table:   1139
    LACNIC Prefixes per ASN:                                      21.36
LACNIC Region origin ASes announcing only one prefix:               367
LACNIC Region transit ASes present in the Internet Routing Table:   189
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              72246144
    Equivalent to 4 /8s, 78 /16s and 99 /24s
    Percentage of available LACNIC address space announced:        71.8

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:                   6155
    Total AfriNIC prefixes after maximum aggregation:              1499
    AfriNIC Deaggregation factor:                                  4.11
Prefixes being announced from the AfriNIC address blocks:          6552
    Unique aggregates announced from the AfriNIC address blocks:   2548
AfriNIC Region origin ASes present in the Internet Routing Table:   307
    AfriNIC Prefixes per ASN:                                     21.34
AfriNIC Region origin ASes announcing only one prefix:               91
AfriNIC Region transit ASes present in the Internet Routing Table:   66
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             20229888
    Equivalent to 1 /8s, 52 /16s and 175 /24s
    Percentage of available AfriNIC address space announced:       60.3

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     1702       6934         407   Korea Telecom (KIX)
17488     1536        138          94   Hathway IP Over Cable Interne
 4755     1217        308         144   TATA Communications formerly 
 9583     1125         87         560   Sify Limited
 4134      979      17164         376   CHINANET-BACKBONE
 7545      812        198         102   TPG Internet Pty Ltd
23577      781         34         665   Korea Telecom (ATM-MPLS)
 9829      766        603          18   BSNL National Internet Backbo
18101      750        200          32   Reliance Infocom Ltd Internet
24560      725        230         171   Bharti Airtel 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     4261       3643         322   bellsouth.net, inc. 
 4323     1886       1047         384   Time Warner Telecom
 1785     1709        714         140   PaeTec Communications, Inc.
 7018     1504       5909        1050   AT&T WorldNet Services
20115     1405       1464         681   Charter Communications 
 2386     1272        671         925   AT&T Data Communications Serv
 6478     1209        275         308   AT&T Worldnet Services 
 3356     1195      10961         442   Level 3 Communications, LLC 
11492     1127        208          12   Cable One 
22773     1075       2604          66   Cox Communications, Inc.

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
30890      484         92         197   Evolva Telecom
12479      476        578           6   Uni2 Autonomous System
 3292      458       1902         394   TDC Tele Danmark
  702      428       1861         344   UUNET - Commercial IP service
35805      356         40           5   United Telecom of Georgia
 3320      348       7067         301   Deutsche Telekom AG
 3301      347       1684         309   TeliaNet Sweden
 3215      343       3065         108   France Telecom Transpac
 8866      335        109          20   Bulgarian Telecommunication C
29049      308         26           3   AzerSat LLC.

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     1457       2882         235   UniNet S.A. de C.V. 
10620      923        211         104   TVCABLE BOGOTA 
28573      611        570          31   NET Servicos de Comunicao S.A
 7303      591        312          93   Telecom Argentina Stet-France
22047      543        302          14   VTR PUNTO NET S.A. 
11830      488        294          52   Instituto Costarricense de El
11172      441         99          69   Servicios Alestra S.A de C.V 
 6471      439         96          31   ENTEL CHILE S.A. 
 7738      410        858          29   Telecomunicacoes da Bahia S.A
 3816      382        190          78   Empresa Nacional de Telecomun

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      993        188           7   TEDATA
24863      894         88          46   LINKdotNET AS number
20858      322         34           5   EgyNet
 3741      276        856         236   The Internet Solution 
 2018      243        215         143   Tertiary Education Network 
 6713      176        166          16   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      140         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
33776      121          7          11   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     4261       3643         322   bellsouth.net, inc. 
 4323     1886       1047         384   Time Warner Telecom
 1785     1709        714         140   PaeTec Communications, Inc.
 4766     1702       6934         407   Korea Telecom (KIX)
17488     1536        138          94   Hathway IP Over Cable Interne
 7018     1504       5909        1050   AT&T WorldNet Services
 8151     1457       2882         235   UniNet S.A. de C.V. 
20115     1405       1464         681   Charter Communications 
 2386     1272        671         925   AT&T Data Communications Serv
 4755     1217        308         144   TATA Communications formerly 

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

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

  ASN   No of nets  Net Savings Description
 1785      1709        1569      PaeTec Communications, Inc.
 4323      1886        1502      Time Warner Telecom
17488      1536        1442      Hathway IP Over Cable Interne
 4766      1702        1295      Korea Telecom (KIX)
 8151      1457        1222      UniNet S.A. de C.V. 
11492      1127        1115      Cable One 
 4755      1217        1073      TATA Communications formerly 
18566      1062        1052      Covad Communications 
22773      1075        1009      Cox Communications, Inc.
 8452       993         986      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
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.112.0/22       5713     Telkom SA Ltd 
41.223.176.0/22      36981     >>UNKNOWN<<
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 
63.140.213.0/24      22555     Universal Talkware Corporatio
63.143.251.0/24      22555     Universal Talkware Corporatio
64.31.32.0/19        11955     ServiceCo LLC - Road Runner 

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        /8:20       /9:10      /10:23      /11:58      /12:169     
/13:350     /14:611     /15:1164    /16:10527   /17:4749    /18:8201    
/19:17096   /20:20431   /21:20272   /22:26049   /23:25958   /24:151912  
/25:902     /26:1028    /27:561     /28:148     /29:8       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2773          4261      bellsouth.net, inc. 
 4766     1401          1702      Korea Telecom (KIX)
17488     1282          1536      Hathway IP Over Cable Interne
 1785     1180          1709      PaeTec Communications, Inc.
11492     1053          1127      Cable One 
18566     1043          1062      Covad Communications 
 2386      988          1272      AT&T Data Communications Serv
 9583      977          1125      Sify Limited
 4323      957          1886      Time Warner Telecom
 8452      917           993      TEDATA

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

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

   4:14        8:209      12:2141     13:8        15:19       16:3      
  17:5        20:35       24:1098     32:51       38:576      40:98     
  41:1766     43:1        44:2        47:22       52:5        55:2      
  56:2        57:24       58:591      59:651      60:464      61:1075   
  62:1115     63:2046     64:3714     65:2406     66:3595     67:1606   
  68:822      69:2650     70:557      71:146      72:1664     73:2      
  74:1606     75:171      76:341      77:844      78:562      79:354    
  80:981      81:841      82:569      83:459      84:634      85:1026   
  86:393      87:673      88:352      89:1451     90:50       91:2392   
  92:330      93:1115     94:1229     95:1114     96:149      97:212    
  98:247      99:26      110:175     111:58      112:108     113:142    
 114:252     115:311     116:1096    117:536     118:352     119:743    
 120:145     121:779     122:1052    123:709     124:983     125:1392   
 128:224     129:231     130:128     131:399     132:71      133:9      
 134:188     135:39      136:223     137:163     138:169     139:79     
 140:442     141:119     142:391     143:353     144:366     145:48     
 146:387     147:154     148:519     149:232     150:177     151:194    
 152:145     153:147     154:2       155:274     156:164     157:300    
 158:118     159:343     160:284     161:152     162:274     163:162    
 164:480     165:502     166:463     167:356     168:656     169:171    
 170:477     171:41      172:10      173:305     174:235     178:1      
 186:96      187:99      188:246     189:473     190:2875    192:5789   
 193:4254    194:3311    195:2682    196:1103    198:3601    199:3361   
 200:5107    201:1317    202:7707    203:8267    204:3890    205:2153   
 206:2444    207:2740    208:3870    209:3375    210:2540    211:1133   
 212:1633    213:1636    214:73      215:24      216:4533    217:1335   
 218:400     219:441     220:1114    221:481     222:303    

End of report




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