Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 8 13:16:02 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 09 May, 2009

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

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

BGP routing table entries examined:                              288037
    Prefixes after maximum aggregation:                          136199
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     140785
Total ASes present in the Internet Routing Table:                 31199
    Prefixes per ASN:                                              9.23
Origin-only ASes present in the Internet Routing Table:           27142
Origin ASes announcing only one prefix:                           13239
Transit ASes present in the Internet Routing Table:                4057
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:               461
    Unregistered ASNs in the Routing Table:                         151
Number of 32-bit ASNs allocated by the RIRs:                        142
Prefixes from 32-bit ASNs in the Routing Table:                      30
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            194
Number of addresses announced to Internet:                   2039977920
    Equivalent to 121 /8s, 151 /16s and 151 /24s
    Percentage of available address space announced:               55.0
    Percentage of allocated address space announced:               63.7
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               76.9
Total number of prefixes smaller than registry allocations:      142407

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

Prefixes being announced by APNIC Region ASes:                    67704
    Total APNIC prefixes after maximum aggregation:               24092
    APNIC Deaggregation factor:                                    2.81
Prefixes being announced from the APNIC address blocks:           64376
    Unique aggregates announced from the APNIC address blocks:    28909
APNIC Region origin ASes present in the Internet Routing Table:    3610
    APNIC Prefixes per ASN:                                       17.83
APNIC Region origin ASes announcing only one prefix:                974
APNIC Region transit ASes present in the Internet Routing Table:    548
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              413123104
    Equivalent to 24 /8s, 159 /16s and 194 /24s
    Percentage of available APNIC address space announced:         77.0

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:                    125398
    Total ARIN prefixes after maximum aggregation:                66155
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            94539
    Unique aggregates announced from the ARIN address blocks:     36627
ARIN Region origin ASes present in the Internet Routing Table:    12984
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                5014
ARIN Region transit ASes present in the Internet Routing Table:    1264
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               428554240
    Equivalent to 25 /8s, 139 /16s and 56 /24s
    Percentage of available ARIN address space announced:          82.4

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:                     65823
    Total RIPE prefixes after maximum aggregation:                38233
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            60147
    Unique aggregates announced from the RIPE address blocks:     39883
RIPE Region origin ASes present in the Internet Routing Table:    12974
    RIPE Prefixes per ASN:                                         4.64
RIPE Region origin ASes announcing only one prefix:                6798
RIPE Region transit ASes present in the Internet Routing Table:    1959
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          33
Number of RIPE addresses announced to Internet:               393192480
    Equivalent to 23 /8s, 111 /16s and 164 /24s
    Percentage of available RIPE address space announced:          83.7

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:                   23762
    Total LACNIC prefixes after maximum aggregation:               5894
    LACNIC Deaggregation factor:                                   4.03
Prefixes being announced from the LACNIC address blocks:          21941
    Unique aggregates announced from the LACNIC address blocks:   12057
LACNIC Region origin ASes present in the Internet Routing Table:   1107
    LACNIC Prefixes per ASN:                                      19.82
LACNIC Region origin ASes announcing only one prefix:               361
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:                        26
Number of LACNIC addresses announced to Internet:              63068288
    Equivalent to 3 /8s, 194 /16s and 88 /24s
    Percentage of available LACNIC address space announced:        62.7

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:                   4921
    Total AfriNIC prefixes after maximum aggregation:              1487
    AfriNIC Deaggregation factor:                                  3.31
Prefixes being announced from the AfriNIC address blocks:          4562
    Unique aggregates announced from the AfriNIC address blocks:   1412
AfriNIC Region origin ASes present in the Internet Routing Table:   295
    AfriNIC Prefixes per ASN:                                     15.46
AfriNIC Region origin ASes announcing only one prefix:               92
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:                       18
Number of AfriNIC addresses announced to Internet:             11303168
    Equivalent to 0 /8s, 172 /16s and 121 /24s
    Percentage of available AfriNIC address space announced:       33.7

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     1700       6930         405   Korea Telecom (KIX)
17488     1573        127         101   Hathway IP Over Cable Interne
 4755     1243        466         126   TATA Communications formerly 
 9583     1077         86         539   Sify Limited
 4134      898      16676         373   CHINANET-BACKBONE
 7545      792        166         102   TPG Internet Pty Ltd
23577      780         34         663   Korea Telecom (ATM-MPLS)
18101      756        217          32   Reliance Infocom Ltd Internet
24560      685        229         176   Bharti Airtel Ltd.
 9829      654        560          18   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     4306       3653         342   bellsouth.net, inc. 
  209     2559       4149         604   Qwest 
 4323     1848       1035         373   Time Warner Telecom
 1785     1758        717         139   PaeTec Communications, Inc.
20115     1631       1449         728   Charter Communications 
 7018     1464       5911        1014   AT&T WorldNet Services
 6478     1398        309         414   AT&T Worldnet Services 
 2386     1264        698         911   AT&T Data Communications Serv
 3356     1235      10981         469   Level 3 Communications, LLC 
11492     1102        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     1231        188           7   TEDATA
30890      541         88         200   Evolva Telecom
 3292      455       1893         394   TDC Tele Danmark
12479      448        578           6   Uni2 Autonomous System
 8866      368        110          24   Bulgarian Telecommunication C
 3320      348       7082         299   Deutsche Telekom AG
 3215      343       3041         108   France Telecom Transpac
 3301      340       1668         304   TeliaNet Sweden
35805      338         24           4   United Telecom of Georgia
29049      317         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     1449       2848         232   UniNet S.A. de C.V. 
10620      930        207         106   TVCABLE BOGOTA 
22047      616        302          14   VTR PUNTO NET S.A. 
 7303      524        272          76   Telecom Argentina Stet-France
11830      516        294          34   Instituto Costarricense de El
28573      456        562          26   NET Servicos de Comunicao S.A
11172      443        102          72   Servicios Alestra S.A de C.V 
 6471      435         95          31   ENTEL CHILE S.A. 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
 3816      349        163          73   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
24863      823         76          48   LINKdotNET AS number
20858      302         34           5   This AS will be used to conne
 3741      278        860         238   The Internet Solution 
 2018      243        215         143   Tertiary Education Network 
 6713      159        150          15   Itissalat Al-MAGHRIB
29571      139         15           9   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
33783      120          8          40   EEPAD TISP TELECOM & INTERNET
 5713      115        507          66   Telkom SA Ltd 
24835      107         46           9   RAYA Telecom - Egypt

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     4306       3653         342   bellsouth.net, inc. 
  209     2559       4149         604   Qwest 
 4323     1848       1035         373   Time Warner Telecom
 1785     1758        717         139   PaeTec Communications, Inc.
 4766     1700       6930         405   Korea Telecom (KIX)
20115     1631       1449         728   Charter Communications 
17488     1573        127         101   Hathway IP Over Cable Interne
 7018     1464       5911        1014   AT&T WorldNet Services
 8151     1449       2848         232   UniNet S.A. de C.V. 
 6478     1398        309         414   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      2559        1955      Qwest 
 1785      1758        1619      PaeTec Communications, Inc.
 4323      1848        1475      Time Warner Telecom
17488      1573        1472      Hathway IP Over Cable Interne
 4766      1700        1295      Korea Telecom (KIX)
 8452      1231        1224      TEDATA
 8151      1449        1217      UniNet S.A. de C.V. 
 4755      1243        1117      TATA Communications formerly 
11492      1102        1091      Cable One 
18566      1062        1052      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         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
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
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

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      /12:166     
/13:337     /14:597     /15:1146    /16:10463   /17:4724    /18:8128    
/19:17124   /20:20385   /21:20268   /22:25947   /23:25487   /24:150459  
/25:900     /26:1041    /27:543     /28:160     /29:37      /30:10      
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2804          4306      bellsouth.net, inc. 
 4766     1391          1700      Korea Telecom (KIX)
17488     1306          1573      Hathway IP Over Cable Interne
  209     1295          2559      Qwest 
 8452     1207          1231      TEDATA
 1785     1163          1758      PaeTec Communications, Inc.
18566     1043          1062      Covad Communications 
11492     1038          1102      Cable One 
 2386      962          1264      AT&T Data Communications Serv
 4323      952          1848      Time Warner Telecom

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

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

   4:13        8:199      12:2222     13:10       15:19       16:3      
  17:4        20:35       24:1063     32:50       38:528      40:97     
  41:2015     43:1        44:2        47:22       52:4        55:2      
  56:3        57:25       58:581      59:637      60:459      61:1121   
  62:1112     63:2075     64:3664     65:2393     66:3621     67:1630   
  68:754      69:2590     70:531      71:144      72:1654     73:2      
  74:1499     75:171      76:311      77:833      78:561      79:336    
  80:971      81:814      82:530      83:417      84:613      85:1083   
  86:403      87:652      88:355      89:1442     90:47       91:2191   
  92:317      93:1003     94:1181     95:961      96:125      97:205    
  98:221      99:22      109:1       110:92      112:112     113:102    
 114:251     115:271     116:1162    117:520     118:290     119:691    
 120:142     121:721     122:1011    123:689     124:967     125:1315   
 128:221     129:232     130:126     131:414     132:73      133:9      
 134:185     135:214     136:242     137:152     138:159     139:81     
 140:444     141:107     142:377     143:357     144:362     145:47     
 146:373     147:152     148:518     149:237     150:181     151:200    
 152:147     153:139     154:2       155:274     156:169     157:300    
 158:115     159:310     160:281     161:135     162:274     163:149    
 164:482     165:503     166:278     167:363     168:685     169:167    
 170:475     171:40      172:10      173:276     174:204     178:1      
 186:10      187:88      188:13      189:343     190:2605    192:5797   
 193:4236    194:3305    195:2701    196:1075    198:3656    199:3348   
 200:5346    201:1367    202:7867    203:8197    204:3818    205:2144   
 206:2450    207:2814    208:3921    209:3391    210:2710    211:1112   
 212:1510    213:1706    214:74      215:30      216:4642    217:1264   
 218:368     219:432     220:1220    221:475     222:296    

End of report




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