Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 24 13:14:48 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 25 Apr, 2009

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

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

BGP routing table entries examined:                              286265
    Prefixes after maximum aggregation:                          135384
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     141034
Total ASes present in the Internet Routing Table:                 31102
    Prefixes per ASN:                                              9.20
Origin-only ASes present in the Internet Routing Table:           27064
Origin ASes announcing only one prefix:                           13174
Transit ASes present in the Internet Routing Table:                4038
Transit-only ASes present in the Internet Routing Table:             94
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:               456
    Unregistered ASNs in the Routing Table:                         152
Number of 32-bit ASNs allocated by the RIRs:                        141
Prefixes from 32-bit ASNs in the Routing Table:                      25
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            208
Number of addresses announced to Internet:                   2035527744
    Equivalent to 121 /8s, 83 /16s and 176 /24s
    Percentage of available address space announced:               54.9
    Percentage of allocated address space announced:               64.2
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               76.5
Total number of prefixes smaller than registry allocations:      141104

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

Prefixes being announced by APNIC Region ASes:                    66477
    Total APNIC prefixes after maximum aggregation:               23664
    APNIC Deaggregation factor:                                    2.81
Prefixes being announced from the APNIC address blocks:           63236
    Unique aggregates announced from the APNIC address blocks:    28895
APNIC Region origin ASes present in the Internet Routing Table:    3607
    APNIC Prefixes per ASN:                                       17.53
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:              411598112
    Equivalent to 24 /8s, 136 /16s and 125 /24s
    Percentage of available APNIC address space announced:         81.8

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, 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:                    124769
    Total ARIN prefixes after maximum aggregation:                65935
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            93936
    Unique aggregates announced from the ARIN address blocks:     36650
ARIN Region origin ASes present in the Internet Routing Table:    12944
    ARIN Prefixes per ASN:                                         7.26
ARIN Region origin ASes announcing only one prefix:                4998
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:                          24
Number of ARIN addresses announced to Internet:               427360000
    Equivalent to 25 /8s, 120 /16s and 255 /24s
    Percentage of available ARIN address space announced:          82.2

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
                       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:                     65947
    Total RIPE prefixes after maximum aggregation:                38185
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            60269
    Unique aggregates announced from the RIPE address blocks:     40136
RIPE Region origin ASes present in the Internet Routing Table:    12930
    RIPE Prefixes per ASN:                                         4.66
RIPE Region origin ASes announcing only one prefix:                6763
RIPE Region transit ASes present in the Internet Routing Table:    1952
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          33
Number of RIPE addresses announced to Internet:               393057312
    Equivalent to 23 /8s, 109 /16s and 148 /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:                   23764
    Total LACNIC prefixes after maximum aggregation:               5853
    LACNIC Deaggregation factor:                                   4.06
Prefixes being announced from the LACNIC address blocks:          21917
    Unique aggregates announced from the LACNIC address blocks:   12078
LACNIC Region origin ASes present in the Internet Routing Table:   1095
    LACNIC Prefixes per ASN:                                      20.02
LACNIC Region origin ASes announcing only one prefix:               350
LACNIC Region transit ASes present in the Internet Routing Table:   181
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        28
Number of LACNIC addresses announced to Internet:              62481664
    Equivalent to 3 /8s, 185 /16s and 101 /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:                   4885
    Total AfriNIC prefixes after maximum aggregation:              1406
    AfriNIC Deaggregation factor:                                  3.47
Prefixes being announced from the AfriNIC address blocks:          4578
    Unique aggregates announced from the AfriNIC address blocks:   1394
AfriNIC Region origin ASes present in the Internet Routing Table:   292
    AfriNIC Prefixes per ASN:                                     15.68
AfriNIC Region origin ASes announcing only one prefix:               89
AfriNIC Region transit ASes present in the Internet Routing Table:   59
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             11293696
    Equivalent to 0 /8s, 172 /16s and 84 /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     1694       6930         401   Korea Telecom (KIX)
17488     1553        124          98   Hathway IP Over Cable Interne
 4755     1229        432         176   TATA Communications formerly 
 9583     1090         87         539   Sify Limited
 4134      896      16580         371   CHINANET-BACKBONE
 7545      788        168         107   TPG Internet Pty Ltd
18101      751        217          31   Reliance Infocom Ltd Internet
24560      682        228         174   Bharti Airtel Ltd.
 9498      675        297          53   BHARTI BT INTERNET LTD.
 9829      634        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     4314       3669         346   bellsouth.net, inc. 
  209     2648       4151         624   Qwest 
 4323     1837       1051         375   Time Warner Telecom
 1785     1752        717         139   PaeTec Communications, Inc.
20115     1616       1439         719   Charter Communications 
 7018     1479       5897        1015   AT&T WorldNet Services
 6478     1368        305         454   AT&T Worldnet Services 
 2386     1255        681         905   AT&T Data Communications Serv
 3356     1194      10980         454   Level 3 Communications, LLC 
11492     1163        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     1248        188           7   TEDATA
30890      539         88         198   SC Kappa Invexim SRL
 3292      452       1764         390   TDC Tele Danmark
12479      447        578           6   Uni2 Autonomous System
 3301      343       1670         307   TeliaNet Sweden
 3320      342       7080         293   Deutsche Telekom AG
 3215      340       3025         108   France Telecom Transpac
 8866      337        109          22   Bulgarian Telecommunication C
35805      324         24           4   United Telecom of Georgia
29049      319         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     1450       2848         233   UniNet S.A. de C.V. 
10620      889        198          97   TVCABLE BOGOTA 
22047      615        302          14   VTR PUNTO NET S.A. 
 7303      521        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      410        102          72   Servicios Alestra S.A de C.V 
28573      405        536          26   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
 5713      115        507          66   Telkom SA Ltd 
33776      107          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
 6389     4314       3669         346   bellsouth.net, inc. 
  209     2648       4151         624   Qwest 
 4323     1837       1051         375   Time Warner Telecom
 1785     1752        717         139   PaeTec Communications, Inc.
 4766     1694       6930         401   Korea Telecom (KIX)
20115     1616       1439         719   Charter Communications 
17488     1553        124          98   Hathway IP Over Cable Interne
 7018     1479       5897        1015   AT&T WorldNet Services
 8151     1450       2848         233   UniNet S.A. de C.V. 
 6478     1368        305         454   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      2648        2024      Qwest 
 1785      1752        1613      PaeTec Communications, Inc.
 4323      1837        1462      Time Warner Telecom
17488      1553        1455      Hathway IP Over Cable Interne
 4766      1694        1293      Korea Telecom (KIX)
 8452      1248        1241      TEDATA
 8151      1450        1217      UniNet S.A. de C.V. 
11492      1163        1152      Cable One 
 4755      1229        1053      TATA Communications formerly 
18566      1059        1049      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
24.75.116.0/22       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
41.223.112.0/22       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

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     
/13:335     /14:595     /15:1147    /16:10427   /17:4694    /18:8086    
/19:17057   /20:20310   /21:20145   /22:25752   /23:25374   /24:149930  
/25:726     /26:848     /27:350     /28:161     /29:37      /30:10      
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2812          4314      bellsouth.net, inc. 
 4766     1391          1694      Korea Telecom (KIX)
  209     1353          2648      Qwest 
17488     1304          1553      Hathway IP Over Cable Interne
 8452     1227          1248      TEDATA
 1785     1158          1752      PaeTec Communications, Inc.
11492     1107          1163      Cable One 
18566     1040          1059      Covad Communications 
 2386      954          1255      AT&T Data Communications Serv
 4323      951          1837      Time Warner Telecom

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

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

   4:13        8:200      12:2223     13:3        15:19       16:3      
  17:4        20:35       24:1076     32:50       38:523      40:97     
  41:2012     43:1        44:2        47:22       52:3        55:2      
  56:3        57:25       58:573      59:629      60:460      61:1114   
  62:1106     63:2034     64:3663     65:2394     66:3599     67:1514   
  68:719      69:2577     70:534      71:134      72:1652     73:2      
  74:1494     75:168      76:306      77:847      78:555      79:311    
  80:979      81:815      82:543      83:423      84:606      85:1059   
  86:394      87:635      88:357      89:1454     90:47       91:2161   
  92:350      93:1125     94:1189     95:1041     96:120      97:189    
  98:214      99:17      109:1       110:58      112:108     113:100    
 114:224     115:249     116:1159    117:515     118:293     119:668    
 120:143     121:704     122:1011    123:673     124:970     125:1311   
 128:224     129:231     130:127     131:417     132:73      133:9      
 134:185     135:214     136:242     137:151     138:149     139:79     
 140:424     141:107     142:376     143:335     144:357     145:45     
 146:372     147:154     148:519     149:236     150:181     151:198    
 152:151     153:138     154:2       155:271     156:169     157:298    
 158:126     159:304     160:282     161:133     162:274     163:149    
 164:482     165:537     166:267     167:357     168:687     169:163    
 170:472     171:38      172:10      173:271     174:186     178:1      
 186:8       187:76      188:9       189:333     190:2712    192:5797   
 193:4227    194:3309    195:2691    196:1055    198:3715    199:3321   
 200:5437    201:1347    202:7853    203:8163    204:3807    205:2150   
 206:2407    207:2806    208:3881    209:3390    210:2646    211:1100   
 212:1527    213:1713    214:71      215:30      216:4572    217:1260   
 218:361     219:420     220:1208    221:453     222:296    

End of report




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