Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 6 12:17:33 CST 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 07 Feb, 2009

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

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

BGP routing table entries examined:                              278566
    Prefixes after maximum aggregation:                          132796
    Deaggregation factor:                                          2.10
    Unique aggregates announced to Internet:                     136538
Total ASes present in the Internet Routing Table:                 30495
    Prefixes per ASN:                                              9.13
Origin-only ASes present in the Internet Routing Table:           26529
Origin ASes announcing only one prefix:                           12914
Transit ASes present in the Internet Routing Table:                3966
Transit-only ASes present in the Internet Routing Table:             97
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      29
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               527
    Unregistered ASNs in the Routing Table:                         179
Number of 32-bit ASNs allocated by the RIRs:                         92
Prefixes from 32-bit ASNs in the Routing Table:                      15
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            229
Number of addresses announced to Internet:                   1996544544
    Equivalent to 119 /8s, 0 /16s and 218 /24s
    Percentage of available address space announced:               53.9
    Percentage of allocated address space announced:               63.0
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               75.5
Total number of prefixes smaller than registry allocations:      136565

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

Prefixes being announced by APNIC Region ASes:                    64198
    Total APNIC prefixes after maximum aggregation:               22979
    APNIC Deaggregation factor:                                    2.79
Prefixes being announced from the APNIC address blocks:           61033
    Unique aggregates announced from the APNIC address blocks:    27621
APNIC Region origin ASes present in the Internet Routing Table:    3521
    APNIC Prefixes per ASN:                                       17.33
APNIC Region origin ASes announcing only one prefix:                948
APNIC Region transit ASes present in the Internet Routing Table:    549
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              397493152
    Equivalent to 23 /8s, 177 /16s and 67 /24s
    Percentage of available APNIC address space announced:         79.0

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,
                       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:                    123281
    Total ARIN prefixes after maximum aggregation:                65154
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            92814
    Unique aggregates announced from the ARIN address blocks:     35503
ARIN Region origin ASes present in the Internet Routing Table:    12756
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4905
ARIN Region transit ASes present in the Internet Routing Table:    1225
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               414233632
    Equivalent to 24 /8s, 176 /16s and 180 /24s
    Percentage of available ARIN address space announced:          79.6

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
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:                     62962
    Total RIPE prefixes after maximum aggregation:                37144
    RIPE Deaggregation factor:                                     1.70
Prefixes being announced from the RIPE address blocks:            57789
    Unique aggregates announced from the RIPE address blocks:     38547
RIPE Region origin ASes present in the Internet Routing Table:    12611
    RIPE Prefixes per ASN:                                         4.58
RIPE Region origin ASes announcing only one prefix:                6637
RIPE Region transit ASes present in the Internet Routing Table:    1914
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               387972704
    Equivalent to 23 /8s, 31 /16s and 254 /24s
    Percentage of available RIPE address space announced:          82.6

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, 47104-49151
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:                   23192
    Total LACNIC prefixes after maximum aggregation:               5739
    LACNIC Deaggregation factor:                                   4.04
Prefixes being announced from the LACNIC address blocks:          21390
    Unique aggregates announced from the LACNIC address blocks:   11857
LACNIC Region origin ASes present in the Internet Routing Table:   1063
    LACNIC Prefixes per ASN:                                      20.12
LACNIC Region origin ASes announcing only one prefix:               338
LACNIC Region transit ASes present in the Internet Routing Table:   176
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              60553600
    Equivalent to 3 /8s, 155 /16s and 249 /24s
    Percentage of available LACNIC address space announced:        60.2

LACNIC AS Blocks       26592-26623, 27648-28671, 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:                   4437
    Total AfriNIC prefixes after maximum aggregation:              1371
    AfriNIC Deaggregation factor:                                  3.24
Prefixes being announced from the AfriNIC address blocks:          3977
    Unique aggregates announced from the AfriNIC address blocks:   1388
AfriNIC Region origin ASes present in the Internet Routing Table:   280
    AfriNIC Prefixes per ASN:                                     14.20
AfriNIC Region origin ASes announcing only one prefix:               86
AfriNIC Region transit ASes present in the Internet Routing Table:   57
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       29
Number of AfriNIC addresses announced to Internet:              9909248
    Equivalent to 0 /8s, 151 /16s and 52 /24s
    Percentage of available AfriNIC address space announced:       29.5

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     1646       6412         378   Korea Telecom (KIX)
17488     1521        110          97   Hathway IP Over Cable Interne
 4755     1202        428         180   TATA Communications formerly 
 9583     1068        107         363   Sify Limited
 4134      904      16247         368   CHINANET-BACKBONE
18101      751        198          25   Reliance Infocom Ltd Internet
 7545      718        158          96   TPG Internet Pty Ltd
 9498      681        297          53   BHARTI BT INTERNET LTD.
24560      664        226         178   Bharti Airtel Ltd.
 9829      627        479          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     4375       3434         344   bellsouth.net, inc. 
  209     2829       4037         620   Qwest 
 1785     1787        732         145   PaeTec Communications, Inc.
 4323     1640       1080         374   Time Warner Telecom
20115     1593       1423         726   Charter Communications 
 7018     1445       5878         999   AT&T WorldNet Services
 2386     1252        715         893   AT&T Data Communications Serv
 6478     1225        295         494   AT&T Worldnet Services 
11492     1224        192          12   Cable One 
 3356     1142      10976         438   Level 3 Communications, LLC 

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
 8452     1037        188           7   TEDATA
 3292      443       1765         388   TDC Tele Danmark
30890      439         88         201   SC Kappa Invexim SRL
12479      396        578           6   Uni2 Autonomous System
 3301      338       1669         304   TeliaNet Sweden
 3320      337       7064         288   Deutsche Telekom AG
 8866      336        109          22   Bulgarian Telecommunication C
 3215      333       2898         102   France Telecom Transpac
29049      331         26           3   AzerSat LLC.
 8551      312        288          40   Bezeq International

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     1486       2834         230   UniNet S.A. de C.V. 
10620      737        161          94   TVCABLE BOGOTA 
11830      687        299           9   Instituto Costarricense de El
22047      619        302          14   VTR PUNTO NET S.A. 
 7303      508        253          78   Telecom Argentina Stet-France
 6471      439         95          42   ENTEL CHILE S.A. 
16814      426         27          10   NSS, S.A. 
11172      406        118          74   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      380        506          23   NET Servicos de Comunicao 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
24863      613         74          40   LINKdotNET AS number
20858      274         34           3   This AS will be used to conne
 3741      268        857         226   The Internet Solution 
 2018      241        215         141   Tertiary Education Network 
33783      150         10           8   EEPAD TISP TELECOM & INTERNET
 6713      144        135          11   Itissalat Al-MAGHRIB
29571      128         15           8   Ci Telecom Autonomous system 
 5536      120          8          17   Internet Egypt Network
33776      118          6           3   Starcomms Nigeria Limited
 5713      117        555          66   Telkom SA Ltd 

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     4375       3434         344   bellsouth.net, inc. 
  209     2829       4037         620   Qwest 
 1785     1787        732         145   PaeTec Communications, Inc.
 4766     1646       6412         378   Korea Telecom (KIX)
 4323     1640       1080         374   Time Warner Telecom
20115     1593       1423         726   Charter Communications 
17488     1521        110          97   Hathway IP Over Cable Interne
 8151     1486       2834         230   UniNet S.A. de C.V. 
 7018     1445       5878         999   AT&T WorldNet Services
 2386     1252        715         893   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
  209      2829        2209      Qwest 
 1785      1787        1642      PaeTec Communications, Inc.
17488      1521        1424      Hathway IP Over Cable Interne
 4766      1646        1268      Korea Telecom (KIX)
 4323      1640        1266      Time Warner Telecom
 8151      1486        1256      UniNet S.A. de C.V. 
11492      1224        1212      Cable One 
18566      1061        1051      Covad Communications 
 8452      1037        1030      TEDATA
 4755      1202        1022      TATA Communications formerly 

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
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
41.220.16.0/20        8668     TelOne Zimbabwe P/L
41.223.112.0/22       5713     Telkom SA Ltd 
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
62.12.96.0/19        15834     MenaNet network Autonomous Sy
62.12.107.0/24       15834     MenaNet network Autonomous Sy

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      /10:20      /11:54      /12:160     
/13:309     /14:571     /15:1125    /16:10326   /17:4584    /18:7858    
/19:16901   /20:19829   /21:19395   /22:24607   /23:24858   /24:145830  
/25:673     /26:808     /27:509     /28:104     /29:8       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2851          4375      bellsouth.net, inc. 
  209     1569          2829      Qwest 
 4766     1378          1646      Korea Telecom (KIX)
17488     1302          1521      Hathway IP Over Cable Interne
 1785     1208          1787      PaeTec Communications, Inc.
11492     1188          1224      Cable One 
18566     1042          1061      Covad Communications 
 8452     1006          1037      TEDATA
 2386      942          1252      AT&T Data Communications Serv
 9583      917          1068      Sify Limited

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

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

   4:13        8:179      12:2193     13:2        15:21       16:3      
  17:5        20:35       24:1116     32:51       38:539      40:96     
  41:1734     43:1        44:2        47:11       52:3        55:2      
  56:3        57:26       58:520      59:608      60:459      61:1101   
  62:1113     63:2008     64:3414     65:2431     66:3562     67:1468   
  68:650      69:2462     70:528      71:159      72:1604     73:2      
  74:1390     75:203      76:296      77:792      78:546      79:319    
  80:962      81:820      82:552      83:394      84:604      85:1013   
  86:400      87:621      88:353      89:1364     90:42       91:1936   
  92:298      93:1105     94:1017     95:292      96:96       97:176    
  98:192      99:16      110:1       111:1       112:11      113:74     
 114:163     115:213     116:1160    117:476     118:267     119:628    
 120:137     121:702     122:927     123:508     124:842     125:1271   
 128:223     129:222     130:134     131:410     132:71      133:9      
 134:344     135:35      136:223     137:141     138:145     139:80     
 140:411     141:105     142:377     143:317     144:319     145:39     
 146:371     147:146     148:522     149:234     150:141     151:200    
 152:150     153:132     154:10      155:257     156:171     157:271    
 158:159     159:239     160:282     161:138     162:274     163:142    
 164:516     165:505     166:274     167:355     168:672     169:161    
 170:469     171:40      172:10      173:196     174:55      186:6      
 187:60      189:326     190:2534    192:5798    193:4184    194:3332   
 195:2683    196:1070    198:3683    199:3284    200:5535    201:1485   
 202:7815    203:7968    204:3926    205:2144    206:2354    207:2794   
 208:3819    209:3482    210:2607    211:1122    212:1513    213:1704   
 214:68      215:30      216:4575    217:1196    218:371     219:407    
 220:1209    221:449     222:296    

End of report




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