Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 14 13:10:31 CDT 2010


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 15 May, 2010

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

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

BGP routing table entries examined:                              321353
    Prefixes after maximum aggregation:                          148341
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     156858
Total ASes present in the Internet Routing Table:                 34007
    Prefixes per ASN:                                              9.45
Origin-only ASes present in the Internet Routing Table:           29525
Origin ASes announcing only one prefix:                           14346
Transit ASes present in the Internet Routing Table:                4482
Transit-only ASes present in the Internet Routing Table:            100
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (36992)                               22
Prefixes from unregistered ASNs in the Routing Table:               341
    Unregistered ASNs in the Routing Table:                         120
Number of 32-bit ASNs allocated by the RIRs:                        564
Prefixes from 32-bit ASNs in the Routing Table:                     636
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            189
Number of addresses announced to Internet:                   2216648704
    Equivalent to 132 /8s, 31 /16s and 96 /24s
    Percentage of available address space announced:               59.8
    Percentage of allocated address space announced:               65.1
    Percentage of available address space allocated:               91.9
    Percentage of address space in use by end-sites:               82.7
Total number of prefixes smaller than registry allocations:      154160

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

Prefixes being announced by APNIC Region ASes:                    76802
    Total APNIC prefixes after maximum aggregation:               26762
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           73469
    Unique aggregates announced from the APNIC address blocks:    32216
APNIC Region origin ASes present in the Internet Routing Table:    4033
    APNIC Prefixes per ASN:                                       18.22
APNIC Region origin ASes announcing only one prefix:               1100
APNIC Region transit ASes present in the Internet Routing Table:    622
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              516278592
    Equivalent to 30 /8s, 197 /16s and 201 /24s
    Percentage of available APNIC address space announced:         76.9

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     1/8,  14/8,  27/8,  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, 133/8, 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, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    133879
    Total ARIN prefixes after maximum aggregation:                69162
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           106795
    Unique aggregates announced from the ARIN address blocks:     41618
ARIN Region origin ASes present in the Internet Routing Table:    13695
    ARIN Prefixes per ASN:                                         7.80
ARIN Region origin ASes announcing only one prefix:                5278
ARIN Region transit ASes present in the Internet Routing Table:    1351
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               730749728
    Equivalent to 43 /8s, 142 /16s and 91 /24s
    Percentage of available ARIN address space announced:          62.2

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, 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,  50/8,  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, 107/8,
                       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:                     73907
    Total RIPE prefixes after maximum aggregation:                42884
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            66839
    Unique aggregates announced from the RIPE address blocks:     43966
RIPE Region origin ASes present in the Internet Routing Table:    14455
    RIPE Prefixes per ASN:                                         4.62
RIPE Region origin ASes announcing only one prefix:                7456
RIPE Region transit ASes present in the Internet Routing Table:    2159
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               425650848
    Equivalent to 25 /8s, 94 /16s and 234 /24s
    Percentage of available RIPE address space announced:          74.6

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,  31/8,  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, 176/8, 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:                   28593
    Total LACNIC prefixes after maximum aggregation:               6808
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:          26992
    Unique aggregates announced from the LACNIC address blocks:   13997
LACNIC Region origin ASes present in the Internet Routing Table:   1287
    LACNIC Prefixes per ASN:                                      20.97
LACNIC Region origin ASes announcing only one prefix:               407
LACNIC Region transit ASes present in the Internet Routing Table:   223
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              73060608
    Equivalent to 4 /8s, 90 /16s and 209 /24s
    Percentage of available LACNIC address space announced:        72.6

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:                   7315
    Total AfriNIC prefixes after maximum aggregation:              1835
    AfriNIC Deaggregation factor:                                  3.99
Prefixes being announced from the AfriNIC address blocks:          5610
    Unique aggregates announced from the AfriNIC address blocks:   1674
AfriNIC Region origin ASes present in the Internet Routing Table:   362
    AfriNIC Prefixes per ASN:                                     15.50
AfriNIC Region origin ASes announcing only one prefix:              105
AfriNIC Region transit ASes present in the Internet Routing Table:   87
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC addresses announced to Internet:             17840640
    Equivalent to 1 /8s, 16 /16s and 58 /24s
    Percentage of available AfriNIC address space announced:       53.2

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     1848       8422         483   Korea Telecom (KIX)
17488     1316        140         123   Hathway IP Over Cable Interne
 4755     1306        293         155   TATA Communications formerly 
 7545     1196        232         105   TPG Internet Pty Ltd
17974      995        281          18   PT TELEKOMUNIKASI INDONESIA
 9583      993         73         484   Sify Limited
 4134      936      21190         403   CHINANET-BACKBONE
24560      897        304         167   Bharti Airtel Ltd., Telemedia
 4808      844       1589         215   CNCGROUP IP network: China169
 9829      777        676          41   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     3929       3733         288   bellsouth.net, inc. 
 4323     3842       1116         406   Time Warner Telecom
 1785     1784        699         131   PaeTec Communications, Inc.
 7018     1550       5757         985   AT&T WorldNet Services
20115     1537       1505         655   Charter Communications 
 2386     1296        584         917   AT&T Data Communications Serv
 6478     1240        256         108   AT&T Worldnet Services 
 3356     1200      10920         415   Level 3 Communications, LLC 
22773     1170       2606          72   Cox Communications, Inc.
11492     1145        209         284   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
35805      625         56           6   United Telecom of Georgia
 3292      454       2027         393   TDC Tele Danmark
30890      440        116         206   Evolva Telecom
  702      414       1869         329   UUNET - Commercial IP service
 8551      403        356          37   Bezeq International
 8866      393        117          18   Bulgarian Telecommunication C
 3301      366       1421         322   TeliaNet Sweden
 3320      365       7072         318   Deutsche Telekom AG
12479      336        576           5   Uni2 Autonomous System
 3215      331       3218         100   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     1555       2965         245   UniNet S.A. de C.V. 
10620     1037        233         151   TVCABLE BOGOTA 
28573      886        729          86   NET Servicos de Comunicao S.A
 7303      719        372         101   Telecom Argentina Stet-France
 6503      576        173         209   AVANTEL, S.A. 
22047      543        310          15   VTR PUNTO NET S.A. 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      467        201          73   Empresa Nacional de Telecomun
14117      448         30          13   Telefonica del Sur S.A. 
11172      444         99          72   Servicios Alestra S.A de C.V 

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     1250        445          10   TEDATA
24863      718        147          43   LINKdotNET AS number
36992      624        275         178   Etisalat MISR
 3741      273        852         232   The Internet Solution 
 2018      216        231         112   Tertiary Education Network 
33776      208         11          14   Starcomms Nigeria Limited
24835      177         78          10   RAYA Telecom - Egypt
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      172         19           9   Ci Telecom Autonomous system 
29975      133        506          14   Vodacom

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     3929       3733         288   bellsouth.net, inc. 
 4323     3842       1116         406   Time Warner Telecom
 4766     1848       8422         483   Korea Telecom (KIX)
 1785     1784        699         131   PaeTec Communications, Inc.
 8151     1555       2965         245   UniNet S.A. de C.V. 
 7018     1550       5757         985   AT&T WorldNet Services
20115     1537       1505         655   Charter Communications 
17488     1316        140         123   Hathway IP Over Cable Interne
 4755     1306        293         155   TATA Communications formerly 
 2386     1296        584         917   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      3842        3436      Time Warner Telecom
 1785      1784        1653      PaeTec Communications, Inc.
 4766      1848        1365      Korea Telecom (KIX)
 8151      1555        1310      UniNet S.A. de C.V. 
 8452      1250        1240      TEDATA
17488      1316        1193      Hathway IP Over Cable Interne
 4755      1306        1151      TATA Communications formerly 
 6478      1240        1132      AT&T Worldnet Services 
22773      1170        1098      Cox Communications, Inc.
 7545      1196        1091      TPG Internet Pty Ltd

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        1239       Sprint 
26973   UNALLOCATED  12.39.154.0/23        1239       Sprint 
26973   UNALLOCATED  12.39.155.0/24        1239       Sprint 
26973   UNALLOCATED  12.39.159.0/24        1239       Sprint 
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
31.0.0.0/16          12654     RIPE NCC RIS Project
31.1.0.0/21          12654     RIPE NCC RIS Project
31.1.24.0/24         12654     RIPE NCC RIS Project
41.202.96.0/19       29571     Ci Telecom Autonomous system 
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      36990     Alkan Telecom Ltd

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      /10:26      /11:67      /12:193     
/13:401     /14:690     /15:1264    /16:11060   /17:5278    /18:8974    
/19:18281   /20:22561   /21:22664   /22:29485   /23:29142   /24:168304  
/25:947     /26:1198    /27:622     /28:143     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2513          3929      bellsouth.net, inc. 
 4323     2332          3842      Time Warner Telecom
 4766     1481          1848      Korea Telecom (KIX)
 1785     1247          1784      PaeTec Communications, Inc.
 8452     1128          1250      TEDATA
17488     1063          1316      Hathway IP Over Cable Interne
11492     1061          1145      Cable One 
18566     1040          1059      Covad Communications 
10620      953          1037      TVCABLE BOGOTA 
 7018      932          1550      AT&T WorldNet Services

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

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

   1:1         4:13        8:264      12:2013     13:10       15:23     
  16:3        17:8        20:21       24:1414     27:55       31:1      
  32:47       33:12       38:669      40:98       41:2468     44:3      
  47:26       52:6        55:6        56:2        57:24       58:724    
  59:509      60:434      61:1087     62:1048     63:1980     64:3849   
  65:2363     66:4199     67:1838     68:1105     69:2813     70:710    
  71:243      72:1816     73:2        74:2280     75:251      76:306    
  77:872      78:625      79:412      80:1008     81:794      82:492    
  83:442      84:703      85:1049     86:459      87:698      88:329    
  89:1547     90:88       91:2755     92:475      93:1109     94:1416   
  95:597      96:248      97:311      98:545      99:28      108:16     
 109:475     110:347     111:494     112:257     113:285     114:400    
 115:591     116:1031    117:639     118:425     119:967     120:141    
 121:733     122:1438    123:888     124:1109    125:1292    128:209    
 129:210     130:192     131:560     132:246     133:17      134:194    
 135:45      136:228     137:172     138:255     139:92      140:483    
 141:137     142:354     143:388     144:476     145:52      146:430    
 147:165     148:608     149:288     150:153     151:169     152:262    
 153:167     154:2       155:329     156:184     157:324     158:107    
 159:372     160:311     161:205     162:262     163:174     164:408    
 165:532     166:480     167:393     168:785     169:161     170:701    
 171:51      172:1       173:733     174:616     175:91      176:1      
 178:88      180:469     182:60      183:251     184:41      186:379    
 187:345     188:1320    189:775     190:3649    192:5733    193:4696   
 194:3354    195:2774    196:1217    197:1       198:3569    199:3432   
 200:5354    201:1514    202:7976    203:8268    204:4060    205:2337   
 206:2540    207:3034    208:3920    209:3432    210:2505    211:1237   
 212:1731    213:1676    214:664     215:70      216:4588    217:1531   
 218:497     219:372     220:1105    221:400     222:291    

End of report




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