[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 11 18:11:45 UTC 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 12 Sep, 2009

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

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

BGP routing table entries examined:                              295211
    Prefixes after maximum aggregation:                          139476
    Deaggregation factor:                                          2.12
    Unique aggregates announced to Internet:                     147649
Total ASes present in the Internet Routing Table:                 32157
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           27945
Origin ASes announcing only one prefix:                           13653
Transit ASes present in the Internet Routing Table:                4212
Transit-only ASes present in the Internet Routing Table:            101
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:               422
    Unregistered ASNs in the Routing Table:                         115
Number of 32-bit ASNs allocated by the RIRs:                        266
Prefixes from 32-bit ASNs in the Routing Table:                     120
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            231
Number of addresses announced to Internet:                   2104209216
    Equivalent to 125 /8s, 107 /16s and 175 /24s
    Percentage of available address space announced:               56.8
    Percentage of allocated address space announced:               65.0
    Percentage of available address space allocated:               87.3
    Percentage of address space in use by end-sites:               78.8
Total number of prefixes smaller than registry allocations:      141055

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

Prefixes being announced by APNIC Region ASes:                    70468
    Total APNIC prefixes after maximum aggregation:               24950
    APNIC Deaggregation factor:                                    2.82
Prefixes being announced from the APNIC address blocks:           66937
    Unique aggregates announced from the APNIC address blocks:    30456
APNIC Region origin ASes present in the Internet Routing Table:    3784
    APNIC Prefixes per ASN:                                       17.69
APNIC Region origin ASes announcing only one prefix:               1037
APNIC Region transit ASes present in the Internet Routing Table:    588
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              458005344
    Equivalent to 27 /8s, 76 /16s and 155 /24s
    Percentage of available APNIC address space announced:         78.0

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks    43/8,  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, 175/8, 180/8, 182/8, 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:                    124876
    Total ARIN prefixes after maximum aggregation:                66495
    ARIN Deaggregation factor:                                     1.88
Prefixes being announced from the ARIN address blocks:            99443
    Unique aggregates announced from the ARIN address blocks:     38338
ARIN Region origin ASes present in the Internet Routing Table:    13222
    ARIN Prefixes per ASN:                                         7.52
ARIN Region origin ASes announcing only one prefix:                5117
ARIN Region transit ASes present in the Internet Routing Table:    1294
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               707359360
    Equivalent to 42 /8s, 41 /16s and 114 /24s
    Percentage of available ARIN address space announced:          62.0

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, 393216-394239
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  24/8,  26/8,  28/8,  29/8,
                        30/8,  32/8,  33/8,  34/8,  35/8,  38/8,  40/8,
                        44/8,  45/8,  47/8,  48/8,  52/8,  54/8,  55/8,
                        56/8,  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, 214/8, 215/8, 216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     68016
    Total RIPE prefixes after maximum aggregation:                39994
    RIPE Deaggregation factor:                                     1.70
Prefixes being announced from the RIPE address blocks:            61886
    Unique aggregates announced from the RIPE address blocks:     41336
RIPE Region origin ASes present in the Internet Routing Table:    13459
    RIPE Prefixes per ASN:                                         4.60
RIPE Region origin ASes announcing only one prefix:                7025
RIPE Region transit ASes present in the Internet Routing Table:    2027
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               397595456
    Equivalent to 23 /8s, 178 /16s and 211 /24s
    Percentage of available RIPE address space announced:          79.0

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, 196608-197631
RIPE Address Blocks     25/8,  51/8,  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:                   25363
    Total LACNIC prefixes after maximum aggregation:               6220
    LACNIC Deaggregation factor:                                   4.08
Prefixes being announced from the LACNIC address blocks:          23699
    Unique aggregates announced from the LACNIC address blocks:   13207
LACNIC Region origin ASes present in the Internet Routing Table:   1177
    LACNIC Prefixes per ASN:                                      20.14
LACNIC Region origin ASes announcing only one prefix:               379
LACNIC Region transit ASes present in the Internet Routing Table:   191
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              66365952
    Equivalent to 3 /8s, 244 /16s and 170 /24s
    Percentage of available LACNIC address space announced:        65.9

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 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:                   6131
    Total AfriNIC prefixes after maximum aggregation:              1561
    AfriNIC Deaggregation factor:                                  3.93
Prefixes being announced from the AfriNIC address blocks:          4483
    Unique aggregates announced from the AfriNIC address blocks:   1517
AfriNIC Region origin ASes present in the Internet Routing Table:   320
    AfriNIC Prefixes per ASN:                                     14.01
AfriNIC Region origin ASes announcing only one prefix:               95
AfriNIC Region transit ASes present in the Internet Routing Table:   68
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12306688
    Equivalent to 0 /8s, 187 /16s and 201 /24s
    Percentage of available AfriNIC address space announced:       36.7

AfriNIC AS Blocks      36864-37887, 327680-328703 & 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     1729       6982         427   Korea Telecom (KIX)
17488     1542        137         102   Hathway IP Over Cable Interne
 4755     1258        292         143   TATA Communications formerly 
 9583     1097         87         533   Sify Limited
 4134     1006      18167         389   CHINANET-BACKBONE
18101      959        201          32   Reliance Infocom Ltd Internet
 7545      842        198          99   TPG Internet Pty Ltd
 9829      811        625          18   BSNL National Internet Backbo
 4808      766       1534         183   CNCGROUP IP network: China169
23577      763         33         648   Korea Telecom (ATM-MPLS)

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     4173       3626         313   bellsouth.net, inc. 
 4323     1927       1049         389   Time Warner Telecom
 1785     1739        714         138   PaeTec Communications, Inc.
 7018     1526       5909        1059   AT&T WorldNet Services
20115     1479       1477         674   Charter Communications 
 6478     1405        282         249   AT&T Worldnet Services 
 2386     1292        654         939   AT&T Data Communications Serv
 3356     1226      10980         439   Level 3 Communications, LLC 
11492     1120        208          12   Cable One 
22773     1099       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      489         92         199   Evolva Telecom
 3292      448       1901         395   TDC Tele Danmark
12479      426        578           6   Uni2 Autonomous System
  702      425       1821         343   UUNET - Commercial IP service
35805      386         40           5   United Telecom of Georgia
 9198      375        138          12   Kazakhtelecom Data Network Ad
 8866      358        110          23   Bulgarian Telecommunication C
 3320      354       7067         303   Deutsche Telekom AG
 3301      350       1412         309   TeliaNet Sweden
 3215      347       3121         111   France Telecom Transpac

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     1495       2899         243   UniNet S.A. de C.V. 
10620     1013        226          97   TVCABLE BOGOTA 
28573      707        620          61   NET Servicos de Comunicao S.A
 7303      635        336          93   Telecom Argentina Stet-France
22047      542        302          14   VTR PUNTO NET S.A. 
11830      476        310          58   Instituto Costarricense de El
11172      441         99          69   Servicios Alestra S.A de C.V 
 7738      424        858          29   Telecomunicacoes da Bahia S.A
 6471      421         96          31   ENTEL CHILE S.A. 
 3816      401        191          79   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      992        188           7   TEDATA
24863      947         96          57   LINKdotNET AS number
20858      296         34           6   EgyNet
 3741      275        856         236   The Internet Solution 
 2018      207        180         142   Tertiary Education Network 
 6713      175        166          16   Itissalat Al-MAGHRIB
29571      139         14           6   Ci Telecom Autonomous system 
24835      131         46           9   RAYA Telecom - Egypt
33776      123          7          11   Starcomms Nigeria Limited
 5536      122          8          13   Internet Egypt Network

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     4173       3626         313   bellsouth.net, inc. 
 4323     1927       1049         389   Time Warner Telecom
 1785     1739        714         138   PaeTec Communications, Inc.
 4766     1729       6982         427   Korea Telecom (KIX)
17488     1542        137         102   Hathway IP Over Cable Interne
 7018     1526       5909        1059   AT&T WorldNet Services
 8151     1495       2899         243   UniNet S.A. de C.V. 
20115     1479       1477         674   Charter Communications 
 6478     1405        282         249   AT&T Worldnet Services 
 2386     1292        654         939   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
 1785      1739        1601      PaeTec Communications, Inc.
 4323      1927        1538      Time Warner Telecom
17488      1542        1440      Hathway IP Over Cable Interne
 4766      1729        1302      Korea Telecom (KIX)
 8151      1495        1252      UniNet S.A. de C.V. 
 6478      1405        1156      AT&T Worldnet Services 
 4755      1258        1115      TATA Communications formerly 
11492      1120        1108      Cable One 
18566      1062        1052      Covad Communications 
22773      1099        1033      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
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.176.0/22      36981     >>UNKNOWN<<
41.223.189.0/24      26452     Local Communications Networks
43.245.0.0/16         7502     Internetwork Kyoto
43.245.96.0/20        7502     Internetwork Kyoto
43.245.112.0/20       7502     Internetwork Kyoto
43.245.192.0/20       7502     Internetwork Kyoto
43.245.208.0/20       7502     Internetwork Kyoto
43.245.224.0/20       7502     Internetwork Kyoto
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        /8:19       /9:10      /10:25      /11:62      /12:174     
/13:350     /14:627     /15:1192    /16:10662   /17:4823    /18:8391    
/19:17402   /20:20778   /21:20625   /22:26667   /23:26514   /24:154117  
/25:942     /26:1080    /27:575     /28:151     /29:8       /30:9       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2705          4173      bellsouth.net, inc. 
 4766     1408          1729      Korea Telecom (KIX)
17488     1291          1542      Hathway IP Over Cable Interne
 1785     1206          1739      PaeTec Communications, Inc.
11492     1047          1120      Cable One 
18566     1043          1062      Covad Communications 
 4323      969          1927      Time Warner Telecom
 9583      949          1097      Sify Limited
10620      919          1013      TVCABLE BOGOTA 
 8452      914           992      TEDATA

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

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

   4:13        8:214      12:2143     13:7        15:21       16:3      
  17:5        20:36       24:1129     32:52       34:2        38:603    
  40:97       41:1719     43:1        44:2        47:24       52:6      
  55:2        56:2        57:25       58:606      59:610      60:458    
  61:962      62:1081     63:2009     64:3623     65:2392     66:3414   
  67:1761     68:980      69:2749     70:569      71:154      72:1682   
  73:2        74:1734     75:179      76:321      77:873      78:582    
  79:380      80:918      81:807      82:525      83:435      84:641    
  85:1028     86:379      87:680      88:383      89:1469     90:49     
  91:2536     92:399      93:1149     94:1168     95:1087     96:167    
  97:268      98:262      99:30      109:3       110:191     111:430    
 112:131     113:154     114:246     115:312     116:1135    117:572    
 118:329     119:772     120:122     121:652     122:1259    123:767    
 124:1050    125:1355    128:222     129:214     130:129     131:420    
 132:75      133:9       134:173     135:42      136:224     137:164    
 138:172     139:84      140:432     141:125     142:382     143:335    
 144:380     145:49      146:390     147:162     148:533     149:212    
 150:206     151:187     152:210     153:155     154:2       155:282    
 156:168     157:306     158:112     159:350     160:291     161:164    
 162:270     163:164     164:276     165:528     166:474     167:368    
 168:708     169:167     170:475     171:42      172:2       173:408    
 174:310     175:1       178:1       180:22      182:1       186:147    
 187:150     188:940     189:604     190:2973    192:5773    193:4251   
 194:3286    195:2756    196:1145    198:3548    199:3353    200:5188   
 201:1297    202:7833    203:8278    204:3894    205:2195    206:2391   
 207:2721    208:3942    209:3396    210:2542    211:1108    212:1582   
 213:1655    214:170     215:33      216:4281    217:1308    218:411    
 219:427     220:1110    221:442     222:322    

End of report



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