Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 29 13:08:19 CDT 2008


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 Aug, 2008

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

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

BGP routing table entries examined:                              267403
    Prefixes after maximum aggregation:                          129611
    Deaggregation factor:                                          2.06
    Unique aggregates announced to Internet:                     130029
Total ASes present in the Internet Routing Table:                 29086
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25321
Origin ASes announcing only one prefix:                           12271
Transit ASes present in the Internet Routing Table:                3765
Transit-only ASes present in the Internet Routing Table:             83
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      26
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               584
    Unregistered ASNs in the Routing Table:                         211
Number of 32-bit ASNs allocated by the RIRs:                         59
Prefixes from 32-bit ASNs in the Routing Table:                       7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            758
Number of addresses announced to Internet:                   1895287072
    Equivalent to 112 /8s, 247 /16s and 201 /24s
    Percentage of available address space announced:               51.1
    Percentage of allocated address space announced:               62.1
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.3
Total number of prefixes smaller than registry allocations:      131240

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

Prefixes being announced by APNIC Region ASes:                    61349
    Total APNIC prefixes after maximum aggregation:               22780
    APNIC Deaggregation factor:                                    2.69
Prefixes being announced from the APNIC address blocks:           58289
    Unique aggregates announced from the APNIC address blocks:    26196
APNIC Region origin ASes present in the Internet Routing Table:    3351
    APNIC Prefixes per ASN:                                       17.39
APNIC Region origin ASes announcing only one prefix:                885
APNIC Region transit ASes present in the Internet Routing Table:    511
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              374332192
    Equivalent to 22 /8s, 79 /16s and 219 /24s
    Percentage of available APNIC address space announced:         79.7

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, 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:                    122481
    Total ARIN prefixes after maximum aggregation:                64799
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            91576
    Unique aggregates announced from the ARIN address blocks:     35030
ARIN Region origin ASes present in the Internet Routing Table:    12412
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4782
ARIN Region transit ASes present in the Internet Routing Table:    1189
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               360803168
    Equivalent to 21 /8s, 129 /16s and 107 /24s
    Percentage of available ARIN address space announced:          74.2

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
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, 173/8, 174/8,
                       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:                     57701
    Total RIPE prefixes after maximum aggregation:                34980
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            52817
    Unique aggregates announced from the RIPE address blocks:     35529
RIPE Region origin ASes present in the Internet Routing Table:    11793
    RIPE Prefixes per ASN:                                         4.48
RIPE Region origin ASes announcing only one prefix:                6194
RIPE Region transit ASes present in the Internet Routing Table:    1795
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               370029760
    Equivalent to 22 /8s, 14 /16s and 52 /24s
    Percentage of available RIPE address space announced:          84.8

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, 47104-48127
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, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   21248
    Total LACNIC prefixes after maximum aggregation:               5325
    LACNIC Deaggregation factor:                                   3.99
Prefixes being announced from the LACNIC address blocks:          19481
    Unique aggregates announced from the LACNIC address blocks:   10795
LACNIC Region origin ASes present in the Internet Routing Table:    986
    LACNIC Prefixes per ASN:                                      19.76
LACNIC Region origin ASes announcing only one prefix:               324
LACNIC Region transit ASes present in the Internet Routing Table:   167
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              54844416
    Equivalent to 3 /8s, 68 /16s and 220 /24s
    Percentage of available LACNIC address space announced:        54.5

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:                   4039
    Total AfriNIC prefixes after maximum aggregation:              1253
    AfriNIC Deaggregation factor:                                  3.22
Prefixes being announced from the AfriNIC address blocks:          4386
    Unique aggregates announced from the AfriNIC address blocks:   1910
AfriNIC Region origin ASes present in the Internet Routing Table:   252
    AfriNIC Prefixes per ASN:                                     17.40
AfriNIC Region origin ASes announcing only one prefix:               86
AfriNIC Region transit ASes present in the Internet Routing Table:   54
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12647424
    Equivalent to 0 /8s, 192 /16s and 252 /24s
    Percentage of available AfriNIC address space announced:       37.7

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 196/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4755     1712        538         180   Videsh Sanchar Nigam Ltd. Aut
17488     1370         89         104   Hathway IP Over Cable Interne
 9583     1109         89         492   Sify Limited
 4766      871       6407         357   Korea Telecom (KIX)
 4134      838      13619         341   CHINANET-BACKBONE
23577      820         35         695   Korea Telecom (ATM-MPLS)
 4780      712        353          61   Digital United Inc.
18101      694        167          31   Reliance Infocom Ltd Internet
 9498      674        291          53   BHARTI BT INTERNET LTD.
 4808      623       1108         136   CNCGROUP IP network: China169

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     4307       3416         344   bellsouth.net, inc. 
  209     2883       3873         617   Qwest 
 6298     2013        323         717   Cox Communicatons 
 1785     1649        710         156   AppliedTheory Corporation 
 2386     1559        691         900   AT&T Data Communications Serv
 4323     1500       1073         374   Time Warner Telecom
20115     1478       1194         670   Charter Communications 
 7018     1409       5785         978   AT&T WorldNet Services
11492     1211        151          22   Cable One 
 6478     1134        239         187   AT&T Worldnet Services 

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
 3292      414       1776         372   TDC Tele Danmark
 3215      396       2756         106   France Telecom Transpac
 8452      358        188          11   TEDATA
 3301      334       1444         305   TeliaNet Sweden
 3320      323       7047         271   Deutsche Telekom AG
 8866      317         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      288        270          38   Bezeq International
  680      275       2047         265   DFN-IP service G-WiN
 8708      267        422         252   Romania Data Systems S.A.

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     1589       2606         230   UniNet S.A. de C.V. 
11830      664        299           9   Instituto Costarricense de El
22047      564        270          14   VTR PUNTO NET S.A. 
 7303      477        235          67   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      421         85          48   ENTEL CHILE S.A. 
10620      411        102          71   TVCABLE BOGOTA 
11172      409        118          73   Servicios Alestra S.A de C.V 
14117      345         23           9   Telefonica del Sur S.A. 
28573      338        440          29   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      508         65          36   LINKdotNET AS number
20858      402         34           3   EgyNet
 3741      266        855         223   The Internet Solution 
 2018      229        214         135   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      136         10          13   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
33776      119          6           3   Starcomms Nigeria Limited
 5713      118        539          70   Telkom SA Ltd 
29571      107         13           8   Ci Telecom Autonomous system 

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     4307       3416         344   bellsouth.net, inc. 
  209     2883       3873         617   Qwest 
 6298     2013        323         717   Cox Communicatons 
 4755     1712        538         180   Videsh Sanchar Nigam Ltd. Aut
 1785     1649        710         156   AppliedTheory Corporation 
 8151     1589       2606         230   UniNet S.A. de C.V. 
 2386     1559        691         900   AT&T Data Communications Serv
 4323     1500       1073         374   Time Warner Telecom
20115     1478       1194         670   Charter Communications 
 7018     1409       5785         978   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      2883        2266      Qwest 
 4755      1712        1532      Videsh Sanchar Nigam Ltd. Aut
 1785      1649        1493      AppliedTheory Corporation 
 8151      1589        1359      UniNet S.A. de C.V. 
 6298      2013        1296      Cox Communicatons 
17488      1370        1266      Hathway IP Over Cable Interne
11492      1211        1189      Cable One 
 4323      1500        1126      Time Warner Telecom
18566      1045        1035      Covad Communications 
 6478      1134         947      AT&T Worldnet Services 

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          701       UUNET Technologies, 
22492   UNALLOCATED   12.2.46.0/24          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
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.31.25.0/24         6517       Yipes Communications
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
24.75.160.0/19        7843     Adelphia Corp. 
24.142.40.0/21        7018     AT&T WorldNet Services
24.142.160.0/19       7018     AT&T WorldNet Services
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
63.140.213.0/24      22555     Universal Talkware Corporatio
63.143.71.0/24         701     UUNET Technologies, Inc. 
63.143.115.0/24        701     UUNET Technologies, Inc. 
63.143.251.0/24      22555     Universal Talkware Corporatio

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        /8:18       /9:9       /10:17      /11:45      /12:146     
/13:292     /14:527     /15:1062    /16:10057   /17:4376    /18:7622    
/19:16077   /20:18755   /21:18407   /22:23185   /23:24242   /24:139894  
/25:834     /26:1022    /27:722     /28:77      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2861          4307      bellsouth.net, inc. 
 6298     1986          2013      Cox Communicatons 
  209     1652          2883      Qwest 
 2386     1237          1559      AT&T Data Communications Serv
11492     1192          1211      Cable One 
17488     1178          1370      Hathway IP Over Cable Interne
 1785     1118          1649      AppliedTheory Corporation 
 4755     1049          1712      Videsh Sanchar Nigam Ltd. Aut
 6478     1027          1134      AT&T Worldnet Services 
18566     1026          1045      Covad Communications 

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

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

   4:8         8:136      12:2135     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1082     32:59       38:488    
  40:92       41:714      43:1        44:2        47:12       52:3      
  55:3        56:3        57:26       58:526      59:510      60:452    
  61:965      62:1209     63:2047     64:3231     65:2367     66:3453   
  67:1227     68:782      69:2289     70:868      71:132      72:2024   
  73:6        74:1127     75:170      76:314      77:769      78:801    
  79:243      80:977      81:871      82:583      83:374      84:574    
  85:982      86:401      87:717      88:339      89:1321     90:37     
  91:1428     92:251      93:808      94:111      96:62       97:65     
  98:317      99:6       114:92      115:41      116:1000    117:342    
 118:195     119:480     120:83      121:587     122:821     123:398    
 124:835     125:1194    128:356     129:202     130:134     131:413    
 132:70      133:9       134:188     135:34      136:223     137:97     
 138:141     139:94      140:507     141:103     142:407     143:312    
 144:411     145:51      146:372     147:157     148:513     149:202    
 150:127     151:180     152:145     153:136     154:10      155:278    
 156:174     157:299     158:163     159:299     160:274     161:136    
 162:256     163:158     164:515     165:490     166:365     167:332    
 168:628     169:142     170:429     171:33      172:10      173:33     
 188:1       189:549     190:2114    192:5799    193:4145    194:3251   
 195:2576    196:1025    198:3734    199:3313    200:5555    201:1527   
 202:7630    203:8095    204:3946    205:2157    206:2371    207:2758   
 208:3526    209:3431    210:2600    211:1088    212:1436    213:1613   
 214:178     215:50      216:4385    217:1207    218:346     219:429    
 220:1063    221:427     222:313    

End of report




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