Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 25 18:28:47 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 26 Sep, 2009

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

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

BGP routing table entries examined:                              298894
    Prefixes after maximum aggregation:                          140069
    Deaggregation factor:                                          2.13
    Unique aggregates announced to Internet:                     148203
Total ASes present in the Internet Routing Table:                 32275
    Prefixes per ASN:                                              9.26
Origin-only ASes present in the Internet Routing Table:           28043
Origin ASes announcing only one prefix:                           13693
Transit ASes present in the Internet Routing Table:                4232
Transit-only ASes present in the Internet Routing Table:            103
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      31
    Max AS path prepend of ASN (45127)                               27
Prefixes from unregistered ASNs in the Routing Table:               456
    Unregistered ASNs in the Routing Table:                         122
Number of 32-bit ASNs allocated by the RIRs:                        283
Prefixes from 32-bit ASNs in the Routing Table:                     145
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            204
Number of addresses announced to Internet:                   2108932864
    Equivalent to 125 /8s, 179 /16s and 195 /24s
    Percentage of available address space announced:               56.9
    Percentage of allocated address space announced:               64.5
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               79.0
Total number of prefixes smaller than registry allocations:      143732

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

Prefixes being announced by APNIC Region ASes:                    71419
    Total APNIC prefixes after maximum aggregation:               25067
    APNIC Deaggregation factor:                                    2.85
Prefixes being announced from the APNIC address blocks:           67834
    Unique aggregates announced from the APNIC address blocks:    30294
APNIC Region origin ASes present in the Internet Routing Table:    3806
    APNIC Prefixes per ASN:                                       17.82
APNIC Region origin ASes announcing only one prefix:               1047
APNIC Region transit ASes present in the Internet Routing Table:    585
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         31
Number of APNIC addresses announced to Internet:              460581408
    Equivalent to 27 /8s, 115 /16s and 234 /24s
    Percentage of available APNIC address space announced:         78.4

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:                    126988
    Total ARIN prefixes after maximum aggregation:                66741
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:           101421
    Unique aggregates announced from the ARIN address blocks:     38445
ARIN Region origin ASes present in the Internet Routing Table:    13258
    ARIN Prefixes per ASN:                                         7.65
ARIN Region origin ASes announcing only one prefix:                5136
ARIN Region transit ASes present in the Internet Routing Table:    1295
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               706192256
    Equivalent to 42 /8s, 23 /16s and 163 /24s
    Percentage of available ARIN address space announced:          61.9

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:                     68650
    Total RIPE prefixes after maximum aggregation:                40175
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            62346
    Unique aggregates announced from the RIPE address blocks:     41701
RIPE Region origin ASes present in the Internet Routing Table:    13513
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7037
RIPE Region transit ASes present in the Internet Routing Table:    2041
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               399869888
    Equivalent to 23 /8s, 213 /16s and 135 /24s
    Percentage of available RIPE address space announced:          74.5

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  46/8,  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:                   25598
    Total LACNIC prefixes after maximum aggregation:               6262
    LACNIC Deaggregation factor:                                   4.09
Prefixes being announced from the LACNIC address blocks:          23876
    Unique aggregates announced from the LACNIC address blocks:   13335
LACNIC Region origin ASes present in the Internet Routing Table:   1184
    LACNIC Prefixes per ASN:                                      20.17
LACNIC Region origin ASes announcing only one prefix:               380
LACNIC Region transit ASes present in the Internet Routing Table:   193
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              66545152
    Equivalent to 3 /8s, 247 /16s and 102 /24s
    Percentage of available LACNIC address space announced:        66.1

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:                   5853
    Total AfriNIC prefixes after maximum aggregation:              1554
    AfriNIC Deaggregation factor:                                  3.77
Prefixes being announced from the AfriNIC address blocks:          4236
    Unique aggregates announced from the AfriNIC address blocks:   1535
AfriNIC Region origin ASes present in the Internet Routing Table:   319
    AfriNIC Prefixes per ASN:                                     13.28
AfriNIC Region origin ASes announcing only one prefix:               93
AfriNIC Region transit ASes present in the Internet Routing Table:   66
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12467968
    Equivalent to 0 /8s, 190 /16s and 63 /24s
    Percentage of available AfriNIC address space announced:       37.2

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     1762       6995         453   Korea Telecom (KIX)
17488     1505        137         104   Hathway IP Over Cable Interne
 4755     1260        292         144   TATA Communications formerly 
 9583     1101         87         530   Sify Limited
 4134     1009      18168         391   CHINANET-BACKBONE
18101      975        204          33   Reliance Infocom Ltd Internet
 7545      869        198          97   TPG Internet Pty Ltd
 9829      813        626          19   BSNL National Internet Backbo
 4808      788       1518         181   CNCGROUP IP network: China169
24560      774        285         164   Bharti Airtel Ltd., Telemedia

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     4168       3627         312   bellsouth.net, inc. 
 4323     3700       1045         384   Time Warner Telecom
 1785     1751        714         138   PaeTec Communications, Inc.
 7018     1507       5875        1056   AT&T WorldNet Services
20115     1479       1477         668   Charter Communications 
 6478     1411        279         301   AT&T Worldnet Services 
 2386     1321        657         951   AT&T Data Communications Serv
 3356     1234      10964         441   Level 3 Communications, LLC 
11492     1128        208          12   Cable One 
22773     1111       2604          67   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      493         93         202   Evolva Telecom
 3292      446       1900         393   TDC Tele Danmark
  702      425       1822         343   UUNET - Commercial IP service
12479      425        578           6   Uni2 Autonomous System
35805      415         40           5   United Telecom of Georgia
 9198      376        138          12   Kazakhtelecom Data Network Ad
 8866      358        110          23   Bulgarian Telecommunication C
 3320      353       7068         304   Deutsche Telekom AG
 3301      351       1412         308   TeliaNet Sweden
 3215      348       3128         110   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     1478       2899         246   UniNet S.A. de C.V. 
10620     1015        227          95   TVCABLE BOGOTA 
28573      709        622          62   NET Servicos de Comunicao S.A
 7303      640        338          94   Telecom Argentina Stet-France
22047      544        302          14   VTR PUNTO NET S.A. 
11830      475        310          61   Instituto Costarricense de El
11172      440         99          70   Servicios Alestra S.A de C.V 
14117      435         29          11   Telefonica del Sur S.A. 
 7738      424        858          29   Telecomunicacoes da Bahia S.A
 6471      423         96          31   ENTEL CHILE 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
 8452      954        188           7   TEDATA
24863      939         97          62   LINKdotNET AS number
 3741      272        856         234   The Internet Solution 
 2018      197        187         116   Tertiary Education Network 
 6713      175        166          16   Itissalat Al-MAGHRIB
29571      139         14           6   Ci Telecom Autonomous system 
24835      123         46           9   RAYA Telecom - Egypt
 5536      122          8          13   Internet Egypt Network
 5713      118        520          69   Telkom SA Ltd 
20858      106         34           6   EgyNet

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     4168       3627         312   bellsouth.net, inc. 
 4323     3700       1045         384   Time Warner Telecom
 4766     1762       6995         453   Korea Telecom (KIX)
 1785     1751        714         138   PaeTec Communications, Inc.
 7018     1507       5875        1056   AT&T WorldNet Services
17488     1505        137         104   Hathway IP Over Cable Interne
20115     1479       1477         668   Charter Communications 
 8151     1478       2899         246   UniNet S.A. de C.V. 
 6478     1411        279         301   AT&T Worldnet Services 
 2386     1321        657         951   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
 4323      3700        3316      Time Warner Telecom
 1785      1751        1613      PaeTec Communications, Inc.
17488      1505        1401      Hathway IP Over Cable Interne
 4766      1762        1309      Korea Telecom (KIX)
 8151      1478        1232      UniNet S.A. de C.V. 
 4755      1260        1116      TATA Communications formerly 
11492      1128        1116      Cable One 
 6478      1411        1110      AT&T Worldnet Services 
18566      1062        1052      Covad Communications 
22773      1111        1044      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
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.189.0/24      26452     Local Communications Networks
43.245.0.0/16         7502     Internetwork Kyoto
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project
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      /10:24      /11:63      /12:176     
/13:354     /14:625     /15:1199    /16:10676   /17:4832    /18:8367    
/19:17456   /20:20856   /21:20870   /22:27113   /23:26778   /24:156686  
/25:933     /26:1063    /27:562     /28:169     /29:40      /30:15      
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2700          4168      bellsouth.net, inc. 
 4323     2360          3700      Time Warner Telecom
 4766     1435          1762      Korea Telecom (KIX)
17488     1259          1505      Hathway IP Over Cable Interne
 1785     1217          1751      PaeTec Communications, Inc.
11492     1054          1128      Cable One 
18566     1043          1062      Covad Communications 
 9583      953          1101      Sify Limited
10620      921          1015      TVCABLE BOGOTA 
 8452      878           954      TEDATA

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

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

   2:1         4:14        8:227      12:2145     13:7        15:22     
  16:3        17:5        20:36       24:1169     32:52       34:2      
  38:604      40:97       41:1670     43:1        44:2        46:1      
  47:16       52:6        55:2        56:2        57:25       58:569    
  59:648      60:454      61:1075     62:1029     63:2018     64:3740   
  65:2398     66:4086     67:1776     68:964      69:2768     70:578    
  71:156      72:1680     73:2        74:1944     75:179      76:319    
  77:882      78:584      79:395      80:908      81:802      82:505    
  83:432      84:531      85:1028     86:382      87:683      88:388    
  89:1485     90:61       91:2563     92:404      93:1246     94:1207   
  95:1100     96:168      97:267      98:308      99:30      109:42     
 110:206     111:440     112:138     113:145     114:260     115:350    
 116:1126    117:571     118:325     119:782     120:132     121:775    
 122:1289    123:777     124:1048    125:1345    128:222     129:216    
 130:129     131:424     132:75      133:10      134:173     135:42     
 136:240     137:164     138:177     139:85      140:441     141:121    
 142:383     143:336     144:350     145:49      146:390     147:170    
 148:549     149:213     150:209     151:183     152:215     153:155    
 154:2       155:270     156:165     157:307     158:113     159:354    
 160:291     161:164     162:270     163:171     164:280     165:521    
 166:474     167:375     168:789     169:166     170:473     171:43     
 172:2       173:417     174:359     175:1       178:1       180:28     
 182:1       186:143     187:157     188:1011    189:581     190:3063   
 192:5775    193:4260    194:3290    195:2757    196:1150    198:3557   
 199:3350    200:5218    201:1320    202:7848    203:8263    204:3932   
 205:2201    206:2439    207:2988    208:3955    209:3488    210:2555   
 211:1123    212:1611    213:1621    214:176     215:40      216:4396   
 217:1311    218:412     219:450     220:1127    221:441     222:317    


End of report




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