Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 21 12:12:16 CST 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 22 Nov, 2008

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

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

BGP routing table entries examined:                              274832
    Prefixes after maximum aggregation:                          131770
    Deaggregation factor:                                          2.09
    Unique aggregates announced to Internet:                     133162
Total ASes present in the Internet Routing Table:                 29863
    Prefixes per ASN:                                              9.20
Origin-only ASes present in the Internet Routing Table:           26014
Origin ASes announcing only one prefix:                           12666
Transit ASes present in the Internet Routing Table:                3849
Transit-only ASes present in the Internet Routing Table:             85
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      19
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               539
    Unregistered ASNs in the Routing Table:                         195
Number of 32-bit ASNs allocated by the RIRs:                         65
Prefixes from 32-bit ASNs in the Routing Table:                       9
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            200
Number of addresses announced to Internet:                   1960189952
    Equivalent to 116 /8s, 214 /16s and 32 /24s
    Percentage of available address space announced:               52.9
    Percentage of allocated address space announced:               63.2
    Percentage of available address space allocated:               83.7
    Percentage of address space in use by end-sites:               74.4
Total number of prefixes smaller than registry allocations:      135548

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

Prefixes being announced by APNIC Region ASes:                    62781
    Total APNIC prefixes after maximum aggregation:               23297
    APNIC Deaggregation factor:                                    2.69
Prefixes being announced from the APNIC address blocks:           59732
    Unique aggregates announced from the APNIC address blocks:    26968
APNIC Region origin ASes present in the Internet Routing Table:    3467
    APNIC Prefixes per ASN:                                       17.23
APNIC Region origin ASes announcing only one prefix:                939
APNIC Region transit ASes present in the Internet Routing Table:    535
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              385251744
    Equivalent to 22 /8s, 246 /16s and 121 /24s
    Percentage of available APNIC address space announced:         76.5

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:                    124396
    Total ARIN prefixes after maximum aggregation:                64922
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:            93713
    Unique aggregates announced from the ARIN address blocks:     34784
ARIN Region origin ASes present in the Internet Routing Table:    12613
    ARIN Prefixes per ASN:                                         7.43
ARIN Region origin ASes announcing only one prefix:                4877
ARIN Region transit ASes present in the Internet Routing Table:    1193
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               401255584
    Equivalent to 23 /8s, 234 /16s and 172 /24s
    Percentage of available ARIN address space announced:          82.5

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:                     60483
    Total RIPE prefixes after maximum aggregation:                36191
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            56086
    Unique aggregates announced from the RIPE address blocks:     37394
RIPE Region origin ASes present in the Internet Routing Table:    12213
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                6430
RIPE Region transit ASes present in the Internet Routing Table:    1854
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               379496800
    Equivalent to 22 /8s, 158 /16s and 169 /24s
    Percentage of available RIPE address space announced:          87.0

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, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   22382
    Total LACNIC prefixes after maximum aggregation:               5571
    LACNIC Deaggregation factor:                                   4.02
Prefixes being announced from the LACNIC address blocks:          20411
    Unique aggregates announced from the LACNIC address blocks:   11400
LACNIC Region origin ASes present in the Internet Routing Table:   1030
    LACNIC Prefixes per ASN:                                      19.82
LACNIC Region origin ASes announcing only one prefix:               338
LACNIC Region transit ASes present in the Internet Routing Table:   168
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              58127616
    Equivalent to 3 /8s, 118 /16s and 245 /24s
    Percentage of available LACNIC address space announced:        57.7

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:                   4273
    Total AfriNIC prefixes after maximum aggregation:              1359
    AfriNIC Deaggregation factor:                                  3.14
Prefixes being announced from the AfriNIC address blocks:          4575
    Unique aggregates announced from the AfriNIC address blocks:   2171
AfriNIC Region origin ASes present in the Internet Routing Table:   270
    AfriNIC Prefixes per ASN:                                     16.94
AfriNIC Region origin ASes announcing only one prefix:               82
AfriNIC Region transit ASes present in the Internet Routing Table:   56
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12953856
    Equivalent to 0 /8s, 197 /16s and 169 /24s
    Percentage of available AfriNIC address space announced:       25.7

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 196/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
17488     1425        100         114   Hathway IP Over Cable Interne
 4755     1182        474         155   TATA Communications formerly 
 9583     1149         87         480   Sify Limited
 4766     1092       6409         364   Korea Telecom (KIX)
 4134      905      14768         370   CHINANET-BACKBONE
23577      809         35         696   Korea Telecom (ATM-MPLS)
18101      786        167          31   Reliance Infocom Ltd Internet
 4780      731        357          63   Digital United Inc.
 9498      689        295          50   BHARTI BT INTERNET LTD.
 7545      642        152          80   TPG Internet Pty 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     4370       3434         344   bellsouth.net, inc. 
  209     3000       4032         619   Qwest 
 6298     2151        333         633   Cox Communicatons 
20115     1840       1461         735   Charter Communications 
 1785     1701        717         155   PaeTec Communications, Inc.
 6478     1677        369         200   AT&T Worldnet Services 
 2386     1592        701         901   AT&T Data Communications Serv
 4323     1586       1068         376   Time Warner Telecom
 7018     1411       5869         974   AT&T WorldNet Services
11492     1217        192          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
 3292      429       1766         380   TDC Tele Danmark
12479      370        578           6   Uni2 Autonomous System
30890      366         95         188   SC Kappa Invexim SRL
 3301      338       1429         307   TeliaNet Sweden
29049      338         26           3   AzerSat LLC.
 8866      336        111          23   Bulgarian Telecommunication C
 3320      323       7062         272   Deutsche Telekom AG
 8452      323        188          11   TEDATA
 3215      316       2788          99   France Telecom Transpac
 8551      303        286          36   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     1400       2832         221   UniNet S.A. de C.V. 
11830      671        299           9   Instituto Costarricense de El
10620      563        128          55   TVCABLE BOGOTA 
22047      533        270          14   VTR PUNTO NET S.A. 
 7303      496        244          71   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      425         88          50   ENTEL CHILE S.A. 
11172      402        118          72   Servicios Alestra S.A de C.V 
28573      347        469          24   NET Servicos de Comunicao S.A
14117      331         23           9   Telefonica del Sur 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      562         71          46   LINKdotNET AS number
 3741      271        857         227   The Internet Solution 
20858      261         34           3   EgyNet
 2018      238        215         138   Tertiary Education Network 
29571      147         13           8   Ci Telecom Autonomous system 
 6713      144        135          11   Itissalat Al-MAGHRIB
33783      141         10          15   EEPAD TISP TELECOM & INTERNET
 5713      121        555          70   Telkom SA Ltd 
 5536      120          8          17   Internet Egypt Network
33776      116          6           3   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     4370       3434         344   bellsouth.net, inc. 
  209     3000       4032         619   Qwest 
 6298     2151        333         633   Cox Communicatons 
20115     1840       1461         735   Charter Communications 
 1785     1701        717         155   PaeTec Communications, Inc.
 6478     1677        369         200   AT&T Worldnet Services 
 2386     1592        701         901   AT&T Data Communications Serv
 4323     1586       1068         376   Time Warner Telecom
17488     1425        100         114   Hathway IP Over Cable Interne
 7018     1411       5869         974   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      3000        2381      Qwest 
 1785      1701        1546      PaeTec Communications, Inc.
 6298      2151        1518      Cox Communicatons 
 6478      1677        1477      AT&T Worldnet Services 
17488      1425        1311      Hathway IP Over Cable Interne
 4323      1586        1210      Time Warner Telecom
11492      1217        1205      Cable One 
 8151      1400        1179      UniNet S.A. de C.V. 
20115      1840        1105      Charter Communications 
18566      1059        1049      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         3549       Global Crossing 
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. 
24.142.40.0/21        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
41.187.0.0/16        20928     Noor Advanced Technologies AS
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
62.212.32.0/19       34797     Egrisi JSC.

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       /9:9       /10:19      /11:54      /12:157     
/13:307     /14:546     /15:1078    /16:10163   /17:4466    /18:7697    
/19:16573   /20:19448   /21:19173   /22:24314   /23:24952   /24:143111  
/25:843     /26:1009    /27:789     /28:88      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2856          4370      bellsouth.net, inc. 
 6298     2125          2151      Cox Communicatons 
  209     1720          3000      Qwest 
 2386     1271          1592      AT&T Data Communications Serv
17488     1215          1425      Hathway IP Over Cable Interne
11492     1192          1217      Cable One 
 1785     1161          1701      PaeTec Communications, Inc.
 6478     1106          1677      AT&T Worldnet Services 
18566     1040          1059      Covad Communications 
 9583     1015          1149      Sify Limited

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

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

   1:1         4:12        8:157      12:2178     13:2        15:21     
  16:3        17:5        20:36       24:1124     30:1        32:54     
  38:517      40:93       41:811      43:1        44:2        47:12     
  52:3        55:3        56:3        57:27       58:497      59:551    
  60:455      61:1041     62:1131     63:2015     64:3286     65:2436   
  66:3532     67:1332     68:845      69:2356     70:897      71:170    
  72:2087     73:7        74:1304     75:169      76:288      77:891    
  78:518      79:291      80:936      81:864      82:583      83:409    
  84:587      85:1047     86:507      87:656      88:348      89:1367   
  90:29       91:1684     92:309      93:975      94:676      95:29     
  96:91       97:137      98:394      99:15      100:1       113:39     
 114:128     115:153     116:1035    117:407     118:291     119:551    
 120:106     121:645     122:819     123:455     124:832     125:1186   
 128:359     129:219     130:136     131:406     132:72      133:9      
 134:187     135:31      136:224     137:118     138:144     139:85     
 140:417     141:111     142:393     143:315     144:301     145:53     
 146:373     147:143     148:600     149:209     150:143     151:210    
 152:140     153:131     154:10      155:276     156:175     157:301    
 158:168     159:297     160:274     161:132     162:249     163:135    
 164:517     165:509     166:361     167:339     168:628     169:155    
 170:455     171:40      172:10      173:140     174:5       187:18     
 188:1       189:321     190:2392    192:5825    193:4131    194:3288   
 195:2626    196:1026    198:3714    199:3299    200:5523    201:1474   
 202:7637    203:8069    204:3936    205:2179    206:2298    207:2772   
 208:3734    209:3440    210:2622    211:1122    212:1547    213:1649   
 214:69      215:25      216:4390    217:1241    218:352     219:412    
 220:1073    221:437     222:308    

End of report




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