Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 5 13:12:14 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 06 Jun, 2009

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

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

BGP routing table entries examined:                              288419
    Prefixes after maximum aggregation:                          136920
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     142415
Total ASes present in the Internet Routing Table:                 31418
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           27318
Origin ASes announcing only one prefix:                           13309
Transit ASes present in the Internet Routing Table:                4100
Transit-only ASes present in the Internet Routing Table:             98
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      28
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               491
    Unregistered ASNs in the Routing Table:                         142
Number of 32-bit ASNs allocated by the RIRs:                        166
Prefixes from 32-bit ASNs in the Routing Table:                      42
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            823
Number of addresses announced to Internet:                   2058656960
    Equivalent to 122 /8s, 180 /16s and 156 /24s
    Percentage of available address space announced:               55.5
    Percentage of allocated address space announced:               64.3
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               77.2
Total number of prefixes smaller than registry allocations:      143030

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

Prefixes being announced by APNIC Region ASes:                    68315
    Total APNIC prefixes after maximum aggregation:               24421
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           67723
    Unique aggregates announced from the APNIC address blocks:    30707
APNIC Region origin ASes present in the Internet Routing Table:    3652
    APNIC Prefixes per ASN:                                       18.54
APNIC Region origin ASes announcing only one prefix:                999
APNIC Region transit ASes present in the Internet Routing Table:    560
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              453358944
    Equivalent to 27 /8s, 5 /16s and 181 /24s
    Percentage of available APNIC address space announced:         84.4

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:                    123325
    Total ARIN prefixes after maximum aggregation:                65857
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:           124064
    Unique aggregates announced from the ARIN address blocks:     51778
ARIN Region origin ASes present in the Internet Routing Table:    13026
    ARIN Prefixes per ASN:                                         9.52
ARIN Region origin ASes announcing only one prefix:                4996
ARIN Region transit ASes present in the Internet Routing Table:    1275
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1017544256
    Equivalent to 60 /8s, 166 /16s and 126 /24s
    Percentage of available ARIN address space announced:         195.6

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
                       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:                     65773
    Total RIPE prefixes after maximum aggregation:                38881
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            64972
    Unique aggregates announced from the RIPE address blocks:     43672
RIPE Region origin ASes present in the Internet Routing Table:    13101
    RIPE Prefixes per ASN:                                         4.96
RIPE Region origin ASes announcing only one prefix:                6860
RIPE Region transit ASes present in the Internet Routing Table:    1972
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          28
Number of RIPE addresses announced to Internet:               481592224
    Equivalent to 28 /8s, 180 /16s and 131 /24s
    Percentage of available RIPE address space announced:         102.5

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:                   24378
    Total LACNIC prefixes after maximum aggregation:               5971
    LACNIC Deaggregation factor:                                   4.08
Prefixes being announced from the LACNIC address blocks:          24258
    Unique aggregates announced from the LACNIC address blocks:   13143
LACNIC Region origin ASes present in the Internet Routing Table:   1118
    LACNIC Prefixes per ASN:                                      21.70
LACNIC Region origin ASes announcing only one prefix:               363
LACNIC Region transit ASes present in the Internet Routing Table:   184
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              71353856
    Equivalent to 4 /8s, 64 /16s and 198 /24s
    Percentage of available LACNIC address space announced:        70.9

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:                   6192
    Total AfriNIC prefixes after maximum aggregation:              1450
    AfriNIC Deaggregation factor:                                  4.27
Prefixes being announced from the AfriNIC address blocks:          6566
    Unique aggregates announced from the AfriNIC address blocks:   2466
AfriNIC Region origin ASes present in the Internet Routing Table:   298
    AfriNIC Prefixes per ASN:                                     22.03
AfriNIC Region origin ASes announcing only one prefix:               91
AfriNIC Region transit ASes present in the Internet Routing Table:   62
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             20432896
    Equivalent to 1 /8s, 55 /16s and 200 /24s
    Percentage of available AfriNIC address space announced:       60.9

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     1707       6930         401   Korea Telecom (KIX)
17488     1593        130         101   Hathway IP Over Cable Interne
 4755     1241        402         122   TATA Communications formerly 
 9583     1086         87         542   Sify Limited
 4134      892      16925         377   CHINANET-BACKBONE
 7545      786        198         102   TPG Internet Pty Ltd
23577      782         34         664   Korea Telecom (ATM-MPLS)
18101      752        216          29   Reliance Infocom Ltd Internet
24560      695        230         174   Bharti Airtel Ltd.
 9829      678        569          16   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     4292       3647         324   bellsouth.net, inc. 
 4323     1859       1034         375   Time Warner Telecom
 1785     1686        717         138   PaeTec Communications, Inc.
20115     1638       1441         718   Charter Communications 
 7018     1498       5899        1030   AT&T WorldNet Services
 6478     1399        310         436   AT&T Worldnet Services 
 2386     1273        683         922   AT&T Data Communications Serv
 3356     1206      10980         451   Level 3 Communications, LLC 
11492     1112        208          12   Cable One 
18566     1062        296          10   Covad Communications 

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      529         88         197   Evolva Telecom
 3292      455       1893         393   TDC Tele Danmark
12479      450        578           6   Uni2 Autonomous System
  702      431       1862         347   UUNET - Commercial IP service
35805      353         24           4   United Telecom of Georgia
 8866      351        109          21   Bulgarian Telecommunication C
 3215      343       3041         108   France Telecom Transpac
 3301      339       1667         303   TeliaNet Sweden
 3320      337       7066         295   Deutsche Telekom AG
29049      318         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     2001       2863         235   UniNet S.A. de C.V. 
10620      905        205         118   TVCABLE BOGOTA 
22047      588        302          14   VTR PUNTO NET S.A. 
 7303      564        297          86   Telecom Argentina Stet-France
28573      538        563          35   NET Servicos de Comunicao S.A
11830      486        292          54   Instituto Costarricense de El
 6471      443         96          32   ENTEL CHILE S.A. 
11172      441        102          70   Servicios Alestra S.A de C.V 
 7738      404        794          28   Telecomunicacoes da Bahia S.A
 3816      359        171          80   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     1206        188           7   TEDATA
24863      851         82          40   LINKdotNET AS number
20858      298         34           5   EgyNet
 3741      277        856         237   The Internet Solution 
 2018      245        215         143   Tertiary Education Network 
 6713      160        151          12   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      139         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
33776      116          6           7   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     4292       3647         324   bellsouth.net, inc. 
 8151     2001       2863         235   UniNet S.A. de C.V. 
 4323     1859       1034         375   Time Warner Telecom
 4766     1707       6930         401   Korea Telecom (KIX)
 1785     1686        717         138   PaeTec Communications, Inc.
20115     1638       1441         718   Charter Communications 
17488     1593        130         101   Hathway IP Over Cable Interne
 7018     1498       5899        1030   AT&T WorldNet Services
 6478     1399        310         436   AT&T Worldnet Services 
 2386     1273        683         922   AT&T Data Communications Serv

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

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

  ASN   No of nets  Net Savings Description
 8151      2001        1766      UniNet S.A. de C.V. 
 1785      1686        1548      PaeTec Communications, Inc.
17488      1593        1492      Hathway IP Over Cable Interne
 4323      1859        1484      Time Warner Telecom
 4766      1707        1306      Korea Telecom (KIX)
 8452      1206        1199      TEDATA
 4755      1241        1119      TATA Communications formerly 
11492      1112        1100      Cable One 
18566      1062        1052      Covad Communications 
22773      1062         996      Cox Communications, Inc.

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
41.223.112.0/22       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 
64.31.59.0/24         7017     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        /8:19       /9:10      /10:22      /11:58      /12:167     
/13:348     /14:602     /15:1153    /16:10487   /17:4720    /18:8074    
/19:16917   /20:20130   /21:19933   /22:25839   /23:25690   /24:151691  
/25:851     /26:1008    /27:538     /28:141     /29:8       /30:5       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2799          4292      bellsouth.net, inc. 
 4766     1400          1707      Korea Telecom (KIX)
17488     1307          1593      Hathway IP Over Cable Interne
 1785     1163          1686      PaeTec Communications, Inc.
 8452     1163          1206      TEDATA
11492     1043          1112      Cable One 
18566     1043          1062      Covad Communications 
 2386      980          1273      AT&T Data Communications Serv
 4323      951          1859      Time Warner Telecom
 9583      937          1086      Sify Limited

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

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

   4:13        8:206      12:2250     13:10       15:19       16:3      
  17:4        20:35       24:1079     32:52       34:2        38:568    
  40:97       41:1981     43:1        44:2        47:22       52:4      
  55:2        56:3        57:24       58:592      59:639      60:459    
  61:1084     62:1095     63:2007     64:3717     65:2381     66:3626   
  67:1625     68:823      69:2643     70:565      71:150      72:1669   
  73:2        74:1560     75:170      76:306      77:854      78:556    
  79:350      80:974      81:836      82:559      83:430      84:614    
  85:1052     86:397      87:658      88:353      89:1442     90:64     
  91:2271     92:342      93:1047     94:1229     95:1116     96:139    
  97:215      98:240      99:21      109:1       110:132     112:132    
 113:124     114:256     115:312     116:1165    117:533     118:285    
 119:703     120:145     121:747     122:1027    123:682     124:989    
 125:1324    128:222     129:238     130:126     131:410     132:74     
 133:9       134:186     135:39      136:224     137:159     138:161    
 139:78      140:442     141:114     142:384     143:333     144:361    
 145:48      146:377     147:164     148:520     149:229     150:177    
 151:195     152:145     153:140     154:2       155:275     156:170    
 157:301     158:115     159:312     160:282     161:143     162:270    
 163:146     164:482     165:501     166:276     167:359     168:672    
 169:163     170:469     171:46      172:10      173:290     174:223    
 178:1       180:1       183:1       186:18      187:401     188:23     
 189:641     190:2706    192:5783    193:4232    194:3303    195:2706   
 196:1090    198:3628    199:3369    200:5151    201:1301    202:7908   
 203:8187    204:3829    205:2152    206:2436    207:2736    208:3890   
 209:3420    210:2682    211:1122    212:1556    213:1674    214:78     
 215:31      216:4645    217:1293    218:383     219:442     220:1218   
 221:483     222:303    

End of report




More information about the NANOG mailing list