Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 17 13:13:32 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 18 Jul, 2009

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

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

BGP routing table entries examined:                              291194
    Prefixes after maximum aggregation:                          138119
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     144889
Total ASes present in the Internet Routing Table:                 31769
    Prefixes per ASN:                                              9.17
Origin-only ASes present in the Internet Routing Table:           27636
Origin ASes announcing only one prefix:                           13456
Transit ASes present in the Internet Routing Table:                4133
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:                                      39
    Max AS path prepend of ASN (22394)                               36
Prefixes from unregistered ASNs in the Routing Table:               421
    Unregistered ASNs in the Routing Table:                         124
Number of 32-bit ASNs allocated by the RIRs:                        205
Prefixes from 32-bit ASNs in the Routing Table:                      68
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            336
Number of addresses announced to Internet:                   2071237376
    Equivalent to 123 /8s, 116 /16s and 147 /24s
    Percentage of available address space announced:               55.9
    Percentage of allocated address space announced:               64.7
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               78.3
Total number of prefixes smaller than registry allocations:      144294

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

Prefixes being announced by APNIC Region ASes:                    69386
    Total APNIC prefixes after maximum aggregation:               24781
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           68804
    Unique aggregates announced from the APNIC address blocks:    31533
APNIC Region origin ASes present in the Internet Routing Table:    3708
    APNIC Prefixes per ASN:                                       18.56
APNIC Region origin ASes announcing only one prefix:               1010
APNIC Region transit ASes present in the Internet Routing Table:    571
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              469439936
    Equivalent to 27 /8s, 251 /16s and 21 /24s
    Percentage of available APNIC address space announced:         87.4

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:                    123853
    Total ARIN prefixes after maximum aggregation:                66050
    ARIN Deaggregation factor:                                     1.88
Prefixes being announced from the ARIN address blocks:           124535
    Unique aggregates announced from the ARIN address blocks:     52165
ARIN Region origin ASes present in the Internet Routing Table:    13114
    ARIN Prefixes per ASN:                                         9.50
ARIN Region origin ASes announcing only one prefix:                5050
ARIN Region transit ASes present in the Internet Routing Table:    1274
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          39
Number of ARIN addresses announced to Internet:              1010319808
    Equivalent to 60 /8s, 56 /16s and 65 /24s
    Percentage of available ARIN address space announced:         194.3

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:                     66747
    Total RIPE prefixes after maximum aggregation:                39472
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            66310
    Unique aggregates announced from the RIPE address blocks:     44758
RIPE Region origin ASes present in the Internet Routing Table:    13298
    RIPE Prefixes per ASN:                                         4.99
RIPE Region origin ASes announcing only one prefix:                6939
RIPE Region transit ASes present in the Internet Routing Table:    1991
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               496661184
    Equivalent to 29 /8s, 154 /16s and 114 /24s
    Percentage of available RIPE address space announced:         105.7

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:                   24613
    Total LACNIC prefixes after maximum aggregation:               6037
    LACNIC Deaggregation factor:                                   4.08
Prefixes being announced from the LACNIC address blocks:          24551
    Unique aggregates announced from the LACNIC address blocks:   13594
LACNIC Region origin ASes present in the Internet Routing Table:   1143
    LACNIC Prefixes per ASN:                                      21.48
LACNIC Region origin ASes announcing only one prefix:               368
LACNIC Region transit ASes present in the Internet Routing Table:   191
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              72393856
    Equivalent to 4 /8s, 80 /16s and 164 /24s
    Percentage of available LACNIC address space announced:        71.9

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:                   6228
    Total AfriNIC prefixes after maximum aggregation:              1503
    AfriNIC Deaggregation factor:                                  4.14
Prefixes being announced from the AfriNIC address blocks:          6644
    Unique aggregates announced from the AfriNIC address blocks:   2564
AfriNIC Region origin ASes present in the Internet Routing Table:   306
    AfriNIC Prefixes per ASN:                                     21.71
AfriNIC Region origin ASes announcing only one prefix:               89
AfriNIC Region transit ASes present in the Internet Routing Table:   64
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             20050176
    Equivalent to 1 /8s, 49 /16s and 241 /24s
    Percentage of available AfriNIC address space announced:       59.8

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       6934         407   Korea Telecom (KIX)
17488     1543        137         104   Hathway IP Over Cable Interne
 4755     1219        292         144   TATA Communications formerly 
 9583     1126         87         559   Sify Limited
 4134      990      17290         375   CHINANET-BACKBONE
 7545      811        198         102   TPG Internet Pty Ltd
 9829      800        611          14   BSNL National Internet Backbo
23577      785         34         666   Korea Telecom (ATM-MPLS)
18101      749        201          32   Reliance Infocom Ltd Internet
24560      729        246         168   Bharti Airtel Ltd.

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     4245       3643         323   bellsouth.net, inc. 
 4323     1894       1048         385   Time Warner Telecom
 1785     1711        714         139   PaeTec Communications, Inc.
 7018     1507       5909        1049   AT&T WorldNet Services
20115     1415       1460         681   Charter Communications 
 2386     1267        670         918   AT&T Data Communications Serv
 6478     1217        275         311   AT&T Worldnet Services 
 3356     1180      10961         443   Level 3 Communications, LLC 
11492     1127        208          12   Cable One 
22773     1076       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      483         92         196   Evolva Telecom
12479      473        578           6   Uni2 Autonomous System
 3292      455       1902         391   TDC Tele Danmark
  702      429       1861         345   UUNET - Commercial IP service
35805      356         40           5   United Telecom of Georgia
 3320      351       7082         305   Deutsche Telekom AG
 3301      348       1684         310   TeliaNet Sweden
 3215      343       3065         108   France Telecom Transpac
 8866      333        109          20   Bulgarian Telecommunication C
29049      308         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     1474       2882         232   UniNet S.A. de C.V. 
10620      949        216         111   TVCABLE BOGOTA 
28573      613        575          32   NET Servicos de Comunicao S.A
 7303      595        315          92   Telecom Argentina Stet-France
22047      543        302          14   VTR PUNTO NET S.A. 
11830      488        309          56   Instituto Costarricense de El
11172      442         99          70   Servicios Alestra S.A de C.V 
 6471      434         96          31   ENTEL CHILE S.A. 
 7738      410        858          29   Telecomunicacoes da Bahia S.A
 3816      383        188          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     1025        188           7   TEDATA
24863      903         90          48   LINKdotNET AS number
20858      323         34           5   EgyNet
 3741      276        856         236   The Internet Solution 
 2018      243        215         143   Tertiary Education Network 
 6713      176        166          16   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      140         15           8   Ci Telecom Autonomous system 
24835      129         46           9   RAYA Telecom - Egypt
 5536      123          8           9   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     4245       3643         323   bellsouth.net, inc. 
 4323     1894       1048         385   Time Warner Telecom
 1785     1711        714         139   PaeTec Communications, Inc.
 4766     1700       6934         407   Korea Telecom (KIX)
17488     1543        137         104   Hathway IP Over Cable Interne
 7018     1507       5909        1049   AT&T WorldNet Services
 8151     1474       2882         232   UniNet S.A. de C.V. 
20115     1415       1460         681   Charter Communications 
 2386     1267        670         918   AT&T Data Communications Serv
 4755     1219        292         144   TATA Communications formerly 

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

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
 1785      1711        1572      PaeTec Communications, Inc.
 4323      1894        1509      Time Warner Telecom
17488      1543        1439      Hathway IP Over Cable Interne
 4766      1700        1293      Korea Telecom (KIX)
 8151      1474        1242      UniNet S.A. de C.V. 
11492      1127        1115      Cable One 
 4755      1219        1075      TATA Communications formerly 
18566      1062        1052      Covad Communications 
 8452      1025        1018      TEDATA
22773      1076        1010      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<<
41.223.112.0/22       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
64.31.32.0/19        11955     ServiceCo LLC - Road Runner 

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      /10:23      /11:58      /12:169     
/13:350     /14:612     /15:1164    /16:10530   /17:4745    /18:8215    
/19:17158   /20:20481   /21:20356   /22:26143   /23:26067   /24:152392  
/25:930     /26:1033    /27:560     /28:155     /29:8       /30:7       
/31:1       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2756          4245      bellsouth.net, inc. 
 4766     1399          1700      Korea Telecom (KIX)
17488     1289          1543      Hathway IP Over Cable Interne
 1785     1182          1711      PaeTec Communications, Inc.
11492     1053          1127      Cable One 
18566     1043          1062      Covad Communications 
 2386      985          1267      AT&T Data Communications Serv
 9583      979          1126      Sify Limited
 4323      961          1894      Time Warner Telecom
 8452      947          1025      TEDATA

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

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

   4:14        8:209      12:2138     13:7        15:19       16:3      
  17:5        20:35       24:1100     32:51       34:2        38:578    
  40:98       41:1788     43:1        44:2        47:22       52:6      
  55:2        56:2        57:24       58:600      59:648      60:461    
  61:1076     62:1105     63:2049     64:3711     65:2396     66:3585   
  67:1609     68:858      69:2662     70:555      71:152      72:1665   
  73:2        74:1617     75:171      76:343      77:841      78:561    
  79:353      80:979      81:840      82:570      83:457      84:625    
  85:1029     86:370      87:678      88:371      89:1444     90:50     
  91:2404     92:363      93:1086     94:1226     95:1120     96:151    
  97:215      98:251      99:26      110:174     111:91      112:110    
 113:142     114:255     115:318     116:1127    117:536     118:356    
 119:744     120:146     121:782     122:1056    123:698     124:982    
 125:1374    128:225     129:232     130:128     131:413     132:74     
 133:9       134:187     135:40      136:219     137:164     138:168    
 139:80      140:443     141:121     142:385     143:352     144:366    
 145:48      146:390     147:154     148:520     149:231     150:175    
 151:193     152:146     153:147     154:2       155:274     156:167    
 157:300     158:117     159:344     160:289     161:153     162:275    
 163:162     164:476     165:513     166:465     167:360     168:658    
 169:172     170:477     171:41      172:10      173:314     174:240    
 178:1       186:103     187:118     188:282     189:543     190:2923   
 192:5784    193:4268    194:3302    195:2703    196:1121    198:3611   
 199:3367    200:5139    201:1284    202:7685    203:8266    204:3897   
 205:2157    206:2449    207:2742    208:3880    209:3377    210:2523   
 211:1119    212:1652    213:1639    214:84      215:29      216:4543   
 217:1353    218:396     219:442     220:1113    221:480     222:326    


End of report




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