Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 20 13:08:02 CDT 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 21 Jun, 2008

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

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

BGP routing table entries examined:                              260459
    Prefixes after maximum aggregation:                          128122
    Deaggregation factor:                                          2.03
    Unique aggregates announced to Internet:                     126833
Total ASes present in the Internet Routing Table:                 28517
    Prefixes per ASN:                                              9.13
Origin-only ASes present in the Internet Routing Table:           24858
Origin ASes announcing only one prefix:                           12026
Transit ASes present in the Internet Routing Table:                3659
Transit-only ASes present in the Internet Routing Table:             79
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:               618
    Unregistered ASNs in the Routing Table:                         225
Number of 32-bit ASNs allocated by the RIRs:                         47
Prefixes from 32-bit ASNs in the Routing Table:                       8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            777
Number of addresses announced to Internet:                   1862946912
    Equivalent to 111 /8s, 10 /16s and 80 /24s
    Percentage of available address space announced:               50.3
    Percentage of allocated address space announced:               61.0
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.3
Total number of prefixes smaller than registry allocations:      126692

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

Prefixes being announced by APNIC Region ASes:                    59314
    Total APNIC prefixes after maximum aggregation:               22110
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           56332
    Unique aggregates announced from the APNIC address blocks:    24955
APNIC Region origin ASes present in the Internet Routing Table:    3277
    APNIC Prefixes per ASN:                                       17.19
APNIC Region origin ASes announcing only one prefix:                873
APNIC Region transit ASes present in the Internet Routing Table:    512
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              356094240
    Equivalent to 21 /8s, 57 /16s and 145 /24s
    Percentage of available APNIC address space announced:         75.8

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, 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:                    120010
    Total ARIN prefixes after maximum aggregation:                65020
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            89707
    Unique aggregates announced from the ARIN address blocks:     34758
ARIN Region origin ASes present in the Internet Routing Table:    12231
    ARIN Prefixes per ASN:                                         7.33
ARIN Region origin ASes announcing only one prefix:                4734
ARIN Region transit ASes present in the Internet Routing Table:    1142
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               356059296
    Equivalent to 21 /8s, 57 /16s and 8 /24s
    Percentage of available ARIN address space announced:          73.2

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:                     56169
    Total RIPE prefixes after maximum aggregation:                34107
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            51378
    Unique aggregates announced from the RIPE address blocks:     34372
RIPE Region origin ASes present in the Internet Routing Table:    11510
    RIPE Prefixes per ASN:                                         4.46
RIPE Region origin ASes announcing only one prefix:                6031
RIPE Region transit ASes present in the Internet Routing Table:    1735
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               361394560
    Equivalent to 21 /8s, 138 /16s and 113 /24s
    Percentage of available RIPE address space announced:          82.8

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, 47104-48127
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:                   20280
    Total LACNIC prefixes after maximum aggregation:               5171
    LACNIC Deaggregation factor:                                   3.92
Prefixes being announced from the LACNIC address blocks:          18502
    Unique aggregates announced from the LACNIC address blocks:   10386
LACNIC Region origin ASes present in the Internet Routing Table:    958
    LACNIC Prefixes per ASN:                                      19.31
LACNIC Region origin ASes announcing only one prefix:               310
LACNIC Region transit ASes present in the Internet Routing Table:   162
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              52542464
    Equivalent to 3 /8s, 33 /16s and 188 /24s
    Percentage of available LACNIC address space announced:        52.2

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:                   4071
    Total AfriNIC prefixes after maximum aggregation:              1202
    AfriNIC Deaggregation factor:                                  3.39
Prefixes being announced from the AfriNIC address blocks:          4340
    Unique aggregates announced from the AfriNIC address blocks:   1891
AfriNIC Region origin ASes present in the Internet Routing Table:   241
    AfriNIC Prefixes per ASN:                                     18.01
AfriNIC Region origin ASes announcing only one prefix:               78
AfriNIC Region transit ASes present in the Internet Routing Table:   48
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12221440
    Equivalent to 0 /8s, 186 /16s and 124 /24s
    Percentage of available AfriNIC address space announced:       36.4

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 196/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4755     1649        387          89   Videsh Sanchar Nigam Ltd. Aut
 9498     1183        550          62   BHARTI BT INTERNET LTD.
17488     1156         80          79   Hathway IP Over Cable Interne
 9583     1138        112         415   Sify Limited
 4766      846       6006         342   Korea Telecom (KIX)
23577      831         35         706   Korea Telecom (ATM-MPLS)
 4134      824      12915         321   CHINANET-BACKBONE
18101      696        168          35   Reliance Infocom Ltd Internet
 9829      598        450          12   BSNL National Internet Backbo
 1221      551       1919         424   Telstra 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
  209     3012       3874         620   Qwest 
 6389     2446       3138         190   bellsouth.net, inc. 
 2386     1493        663         874   AT&T Data Communications Serv
 4323     1459       1044         376   Time Warner Telecom
 7018     1397       5824         977   AT&T WorldNet Services
11492     1229        149          12   Cable One 
 1785     1077        510         104   AppliedTheory Corporation 
18566     1045        296          10   Covad Communications 
20115     1042       1064         565   Charter Communications 
 7011     1026        288         561   Citizens Utilities 

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      414       1773         372   TDC Tele Danmark
 8452      344        188          11   TEDATA
 3301      335       1460         305   TeliaNet Sweden
 8866      319         77          21   Bulgarian Telecommunication C
 3320      316       7045         266   Deutsche Telekom AG
 5462      292        666          27   Telewest Broadband
 3215      286       2742          89   France Telecom Transpac
 8551      283        269          38   Bezeq International
  680      274       2047         264   DFN-IP service G-WiN
 8708      266        421         250   Romania Data Systems S.A.

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     1246       2464         227   UniNet S.A. de C.V. 
11830      603        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      467        230          69   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      412         85          46   ENTEL CHILE S.A. 
11172      410        118          70   Servicios Alestra S.A de C.V 
10620      394        101          72   TVCABLE BOGOTA 
14117      374         23           9   Telefonica del Sur S.A. 
20299      333         23          97   NEWCOM AMERICAS 

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      475         61          30   LINKdotNET AS number
20858      391         34           3   EgyNet
 3741      283        853         224   The Internet Solution 
 2018      201        205          85   Tertiary Education Network 
 5713      153        541          92   Telkom SA Ltd 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      135         10          12   EEPAD TISP TELECOM & INTERNET
 5536      121          8          16   Internet Egypt Network
29571      102         13           8   Ci Telecom Autonomous system 
33776      100          6           3   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
  209     3012       3874         620   Qwest 
 6389     2446       3138         190   bellsouth.net, inc. 
 4755     1649        387          89   Videsh Sanchar Nigam Ltd. Aut
 2386     1493        663         874   AT&T Data Communications Serv
 4323     1459       1044         376   Time Warner Telecom
 7018     1397       5824         977   AT&T WorldNet Services
 8151     1246       2464         227   UniNet S.A. de C.V. 
11492     1229        149          12   Cable One 
 9498     1183        550          62   BHARTI BT INTERNET LTD.
17488     1156         80          79   Hathway IP Over Cable Interne

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

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

  ASN   No of nets  Net Savings Description
 6389      2446        2256      bellsouth.net, inc. 
 4755      1649        1560      Videsh Sanchar Nigam Ltd. Aut
11492      1229        1217      Cable One 
 9498      1183        1121      BHARTI BT INTERNET LTD.
 4323      1459        1083      Time Warner Telecom
17488      1156        1077      Hathway IP Over Cable Interne
18566      1045        1035      Covad Communications 
 8151      1246        1019      UniNet S.A. de C.V. 
 1785      1077         973      AppliedTheory Corporation 
22773       963         901      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          701       UUNET Technologies, 
22492   UNALLOCATED   12.2.46.0/24          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
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.31.25.0/24         6517       Yipes Communications
27220   UNALLOCATED   12.35.204.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
24.48.244.0/23        7843     Adelphia Corp. 
24.51.159.0/24        7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.75.192.0/18        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 

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        /8:18       /9:9       /10:16      /11:43      /12:143     
/13:280     /14:514     /15:1031    /16:9961    /17:4344    /18:7371    
/19:15700   /20:18330   /21:17995   /22:22352   /23:23272   /24:136306  
/25:865     /26:1032    /27:778     /28:82      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
  209     1768          3012      Qwest 
 6389     1510          2446      bellsouth.net, inc. 
11492     1210          1229      Cable One 
 2386     1189          1493      AT&T Data Communications Serv
18566     1026          1045      Covad Communications 
 4755      994          1649      Videsh Sanchar Nigam Ltd. Aut
 9583      988          1138      Sify Limited
 6298      974           989      Cox Communicatons 
17488      968          1156      Hathway IP Over Cable Interne
 6478      948           957      AT&T Worldnet Services 

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

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

   4:7         8:119      12:2063     13:1        15:22       16:3      
  17:5        18:13       20:35       24:1076     25:1        32:61     
  38:445      40:92       41:643      43:1        44:2        47:12     
  52:3        55:3        56:3        57:23       58:464      59:487    
  60:442      61:990      62:1221     63:2033     64:3296     65:2411   
  66:3582     67:1216     68:694      69:2272     70:679      71:121    
  72:1821     73:5        74:1016     75:157      76:297      77:732    
  78:726      79:193      80:957      81:846      82:596      83:398    
  84:578      85:1018     86:423      87:694      88:329      89:1268   
  90:14       91:1286     92:202      93:581      94:51       96:36     
  97:25       98:167      99:3       112:1       113:1       114:38     
 116:724     117:327     118:149     119:446     120:61      121:547    
 122:782     123:349     124:862     125:1134    128:362     129:202    
 130:131     131:408     132:67      133:9       134:177     135:33     
 136:219     137:86      138:146     139:78      140:491     141:99     
 142:419     143:315     144:356     145:51      146:363     147:155    
 148:507     149:194     150:130     151:193     152:143     153:135    
 154:10      155:277     156:177     157:273     158:168     159:242    
 160:266     161:114     162:234     163:187     164:522     165:446    
 166:319     167:325     168:618     169:138     170:428     171:29     
 172:10      189:210     190:2119    192:5795    193:4101    194:3204   
 195:2505    196:1075    198:3739    199:3271    200:5528    201:1471   
 202:7613    203:7932    204:3975    205:2110    206:2392    207:2767   
 208:3373    209:3491    210:2520    211:1012    212:1413    213:1652   
 214:149     215:49      216:4397    217:1198    218:346     219:415    
 220:1071    221:471     222:309    

End of report




More information about the NANOG mailing list