Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 29 13:12:59 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 30 May, 2009

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

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

BGP routing table entries examined:                              289077
    Prefixes after maximum aggregation:                          136617
    Deaggregation factor:                                          2.12
    Unique aggregates announced to Internet:                     142075
Total ASes present in the Internet Routing Table:                 31358
    Prefixes per ASN:                                              9.22
Origin-only ASes present in the Internet Routing Table:           27249
Origin ASes announcing only one prefix:                           13307
Transit ASes present in the Internet Routing Table:                4109
Transit-only ASes present in the Internet Routing Table:             95
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      28
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               517
    Unregistered ASNs in the Routing Table:                         148
Number of 32-bit ASNs allocated by the RIRs:                        164
Prefixes from 32-bit ASNs in the Routing Table:                      42
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            804
Number of addresses announced to Internet:                   2055663936
    Equivalent to 122 /8s, 134 /16s and 241 /24s
    Percentage of available address space announced:               55.5
    Percentage of allocated address space announced:               64.2
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               77.2
Total number of prefixes smaller than registry allocations:      143093

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

Prefixes being announced by APNIC Region ASes:                    68122
    Total APNIC prefixes after maximum aggregation:               24375
    APNIC Deaggregation factor:                                    2.79
Prefixes being announced from the APNIC address blocks:           67545
    Unique aggregates announced from the APNIC address blocks:    30656
APNIC Region origin ASes present in the Internet Routing Table:    3645
    APNIC Prefixes per ASN:                                       18.53
APNIC Region origin ASes announcing only one prefix:                998
APNIC Region transit ASes present in the Internet Routing Table:    558
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         22
Number of APNIC addresses announced to Internet:              452378976
    Equivalent to 26 /8s, 246 /16s and 193 /24s
    Percentage of available APNIC address space announced:         84.3

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:                    124963
    Total ARIN prefixes after maximum aggregation:                65735
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:           125685
    Unique aggregates announced from the ARIN address blocks:     51667
ARIN Region origin ASes present in the Internet Routing Table:    13003
    ARIN Prefixes per ASN:                                         9.67
ARIN Region origin ASes announcing only one prefix:                4995
ARIN Region transit ASes present in the Internet Routing Table:    1272
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1017392960
    Equivalent to 60 /8s, 164 /16s and 47 /24s
    Percentage of available ARIN address space announced:         195.6

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:                     65530
    Total RIPE prefixes after maximum aggregation:                38773
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            64743
    Unique aggregates announced from the RIPE address blocks:     43594
RIPE Region origin ASes present in the Internet Routing Table:    13072
    RIPE Prefixes per ASN:                                         4.95
RIPE Region origin ASes announcing only one prefix:                6862
RIPE Region transit ASes present in the Internet Routing Table:    1983
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          28
Number of RIPE addresses announced to Internet:               480688032
    Equivalent to 28 /8s, 166 /16s and 183 /24s
    Percentage of available RIPE address space announced:         102.3

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:                   23841
    Total LACNIC prefixes after maximum aggregation:               5941
    LACNIC Deaggregation factor:                                   4.01
Prefixes being announced from the LACNIC address blocks:          23727
    Unique aggregates announced from the LACNIC address blocks:   13095
LACNIC Region origin ASes present in the Internet Routing Table:   1117
    LACNIC Prefixes per ASN:                                      21.24
LACNIC Region origin ASes announcing only one prefix:               363
LACNIC Region transit ASes present in the Internet Routing Table:   185
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              71561088
    Equivalent to 4 /8s, 67 /16s and 239 /24s
    Percentage of available LACNIC address space announced:        71.1

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:                   6192
    Total AfriNIC prefixes after maximum aggregation:              1451
    AfriNIC Deaggregation factor:                                  4.27
Prefixes being announced from the AfriNIC address blocks:          6560
    Unique aggregates announced from the AfriNIC address blocks:   2430
AfriNIC Region origin ASes present in the Internet Routing Table:   297
    AfriNIC Prefixes per ASN:                                     22.09
AfriNIC Region origin ASes announcing only one prefix:               89
AfriNIC Region transit ASes present in the Internet Routing Table:   62
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             19306496
    Equivalent to 1 /8s, 38 /16s and 152 /24s
    Percentage of available AfriNIC address space announced:       57.5

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     1705       6930         401   Korea Telecom (KIX)
17488     1588        130          99   Hathway IP Over Cable Interne
 4755     1249        476         124   TATA Communications formerly 
 9583     1075         86         538   Sify Limited
 4134      890      16789         375   CHINANET-BACKBONE
 7545      787        198         101   TPG Internet Pty Ltd
23577      779         34         660   Korea Telecom (ATM-MPLS)
18101      748        216          29   Reliance Infocom Ltd Internet
24560      693        230         174   Bharti Airtel Ltd.
 9829      669        561          15   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     4293       3647         324   bellsouth.net, inc. 
  209     2540       4137         604   Qwest 
 4323     1856       1035         374   Time Warner Telecom
 1785     1699        717         139   PaeTec Communications, Inc.
20115     1626       1441         720   Charter Communications 
 7018     1500       5902        1033   AT&T WorldNet Services
 6478     1398        310         442   AT&T Worldnet Services 
 2386     1269        683         922   AT&T Data Communications Serv
 3356     1212      10981         456   Level 3 Communications, LLC 
11492     1109        208          12   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
30890      526         87         196   Evolva Telecom
 3292      456       1893         394   TDC Tele Danmark
12479      450        578           6   Uni2 Autonomous System
  702      430       1864         344   UUNET - Commercial IP service
 8866      386        110          26   Bulgarian Telecommunication C
35805      348         24           4   United Telecom of Georgia
 3320      344       7066         295   Deutsche Telekom AG
 3215      343       3041         108   France Telecom Transpac
 3301      340       1668         304   TeliaNet Sweden
29049      317         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     1453       2863         234   UniNet S.A. de C.V. 
10620      914        207         108   TVCABLE BOGOTA 
22047      579        302          14   VTR PUNTO NET S.A. 
 7303      543        293          79   Telecom Argentina Stet-France
11830      486        292          54   Instituto Costarricense de El
28573      472        562          35   NET Servicos de Comunicao S.A
 6471      443         96          32   ENTEL CHILE S.A. 
11172      441        102          70   Servicios Alestra S.A de C.V 
 7738      404        794          28   Telecomunicacoes da Bahia S.A
 3816      357        170          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     1203        188           7   TEDATA
24863      880         81          41   LINKdotNET AS number
20858      326         34           5   EgyNet
 3741      278        860         238   The Internet Solution 
 2018      245        215         143   Tertiary Education Network 
 6713      160        151          12   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      139         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
33776      116          6           7   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     4293       3647         324   bellsouth.net, inc. 
  209     2540       4137         604   Qwest 
 4323     1856       1035         374   Time Warner Telecom
 4766     1705       6930         401   Korea Telecom (KIX)
 1785     1699        717         139   PaeTec Communications, Inc.
20115     1626       1441         720   Charter Communications 
17488     1588        130          99   Hathway IP Over Cable Interne
 7018     1500       5902        1033   AT&T WorldNet Services
 8151     1453       2863         234   UniNet S.A. de C.V. 
 6478     1398        310         442   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      2540        1936      Qwest 
 1785      1699        1560      PaeTec Communications, Inc.
17488      1588        1489      Hathway IP Over Cable Interne
 4323      1856        1482      Time Warner Telecom
 4766      1705        1304      Korea Telecom (KIX)
 8151      1453        1219      UniNet S.A. de C.V. 
 8452      1203        1196      TEDATA
 4755      1249        1125      TATA Communications formerly 
11492      1109        1097      Cable One 
18566      1062        1052      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
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 
64.31.59.0/24         7017     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      /10:22      /11:58      /12:166     
/13:347     /14:602     /15:1151    /16:10486   /17:4764    /18:8174    
/19:17108   /20:20443   /21:20381   /22:26048   /23:25758   /24:151008  
/25:832     /26:991     /27:544     /28:144     /29:8       /30:5       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2800          4293      bellsouth.net, inc. 
 4766     1398          1705      Korea Telecom (KIX)
17488     1307          1588      Hathway IP Over Cable Interne
  209     1283          2540      Qwest 
 1785     1175          1699      PaeTec Communications, Inc.
 8452     1172          1203      TEDATA
11492     1043          1109      Cable One 
18566     1043          1062      Covad Communications 
 2386      977          1269      AT&T Data Communications Serv
 4323      955          1856      Time Warner Telecom

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

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

   4:13        8:203      12:2216     13:10       15:19       16:3      
  17:4        20:35       24:1075     32:52       34:2        38:561    
  40:97       41:1977     43:1        44:2        47:22       52:4      
  55:2        56:3        57:24       58:586      59:642      60:459    
  61:1092     62:1091     63:2083     64:3713     65:2381     66:3621   
  67:1606     68:822      69:2629     70:531      71:147      72:1665   
  73:2        74:1535     75:172      76:308      77:860      78:557    
  79:341      80:975      81:822      82:553      83:429      84:643    
  85:1037     86:401      87:655      88:354      89:1436     90:60     
  91:2253     92:339      93:1035     94:1226     95:1182     96:134    
  97:209      98:242      99:20      109:1       110:126     112:129    
 113:109     114:269     115:291     116:1162    117:529     118:298    
 119:702     120:145     121:746     122:1028    123:684     124:979    
 125:1323    128:222     129:236     130:125     131:412     132:75     
 133:9       134:186     135:39      136:224     137:155     138:160    
 139:78      140:447     141:114     142:381     143:347     144:365    
 145:47      146:375     147:160     148:518     149:229     150:177    
 151:198     152:146     153:140     154:2       155:275     156:170    
 157:296     158:114     159:312     160:283     161:143     162:267    
 163:151     164:480     165:499     166:274     167:361     168:680    
 169:164     170:467     171:40      172:10      173:288     174:217    
 178:1       180:1       183:1       186:17      187:105     188:20     
 189:418     190:2687    192:5782    193:4221    194:3299    195:2701   
 196:1067    198:3630    199:3366    200:5205    201:1273    202:7874   
 203:8188    204:3837    205:2139    206:2453    207:2778    208:3901   
 209:3437    210:2683    211:1118    212:1512    213:1664    214:76     
 215:31      216:4702    217:1277    218:367     219:430     220:1217   
 221:476     222:302    

End of report




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