Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 3 13:08:47 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 04 Oct, 2008

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

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

BGP routing table entries examined:                              270385
    Prefixes after maximum aggregation:                          130450
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     131768
Total ASes present in the Internet Routing Table:                 29399
    Prefixes per ASN:                                              9.20
Origin-only ASes present in the Internet Routing Table:           25577
Origin ASes announcing only one prefix:                           12464
Transit ASes present in the Internet Routing Table:                3822
Transit-only ASes present in the Internet Routing Table:             79
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:               560
    Unregistered ASNs in the Routing Table:                         200
Number of 32-bit ASNs allocated by the RIRs:                         61
Prefixes from 32-bit ASNs in the Routing Table:                      10
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            752
Number of addresses announced to Internet:                   1909012352
    Equivalent to 113 /8s, 201 /16s and 55 /24s
    Percentage of available address space announced:               51.5
    Percentage of allocated address space announced:               62.5
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.7
Total number of prefixes smaller than registry allocations:      132791

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

Prefixes being announced by APNIC Region ASes:                    62421
    Total APNIC prefixes after maximum aggregation:               23127
    APNIC Deaggregation factor:                                    2.70
Prefixes being announced from the APNIC address blocks:           59307
    Unique aggregates announced from the APNIC address blocks:    26669
APNIC Region origin ASes present in the Internet Routing Table:    3389
    APNIC Prefixes per ASN:                                       17.50
APNIC Region origin ASes announcing only one prefix:                903
APNIC Region transit ASes present in the Internet Routing Table:    539
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              377990304
    Equivalent to 22 /8s, 135 /16s and 172 /24s
    Percentage of available APNIC address space announced:         80.5

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, 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:                    122827
    Total ARIN prefixes after maximum aggregation:                64724
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            92067
    Unique aggregates announced from the ARIN address blocks:     35235
ARIN Region origin ASes present in the Internet Routing Table:    12493
    ARIN Prefixes per ASN:                                         7.37
ARIN Region origin ASes announcing only one prefix:                4833
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:                          16
Number of ARIN addresses announced to Internet:               364498912
    Equivalent to 21 /8s, 185 /16s and 207 /24s
    Percentage of available ARIN address space announced:          74.9

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:                     58838
    Total RIPE prefixes after maximum aggregation:                35441
    RIPE Deaggregation factor:                                     1.66
Prefixes being announced from the RIPE address blocks:            54018
    Unique aggregates announced from the RIPE address blocks:     36183
RIPE Region origin ASes present in the Internet Routing Table:    11981
    RIPE Prefixes per ASN:                                         4.51
RIPE Region origin ASes announcing only one prefix:                6314
RIPE Region transit ASes present in the Internet Routing Table:    1824
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               374235424
    Equivalent to 22 /8s, 78 /16s and 97 /24s
    Percentage of available RIPE address space announced:          85.8

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, 47104-49151
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:                   21554
    Total LACNIC prefixes after maximum aggregation:               5416
    LACNIC Deaggregation factor:                                   3.98
Prefixes being announced from the LACNIC address blocks:          19669
    Unique aggregates announced from the LACNIC address blocks:   11065
LACNIC Region origin ASes present in the Internet Routing Table:   1005
    LACNIC Prefixes per ASN:                                      19.57
LACNIC Region origin ASes announcing only one prefix:               332
LACNIC Region transit ASes present in the Internet Routing Table:   169
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              56901120
    Equivalent to 3 /8s, 100 /16s and 62 /24s
    Percentage of available LACNIC address space announced:        56.5

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:                   4189
    Total AfriNIC prefixes after maximum aggregation:              1300
    AfriNIC Deaggregation factor:                                  3.22
Prefixes being announced from the AfriNIC address blocks:          4464
    Unique aggregates announced from the AfriNIC address blocks:   2066
AfriNIC Region origin ASes present in the Internet Routing Table:   260
    AfriNIC Prefixes per ASN:                                     17.17
AfriNIC Region origin ASes announcing only one prefix:               82
AfriNIC Region transit ASes present in the Internet Routing Table:   55
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12766464
    Equivalent to 0 /8s, 194 /16s and 205 /24s
    Percentage of available AfriNIC address space announced:       38.0

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     1454        521         190   TATA Communications formerly 
17488     1393         95          99   Hathway IP Over Cable Interne
 9583     1109         87         476   Sify Limited
 4766      876       6407         359   Korea Telecom (KIX)
 4134      839      13664         343   CHINANET-BACKBONE
23577      808         34         689   Korea Telecom (ATM-MPLS)
18101      781        161          63   Reliance Infocom Ltd Internet
 4780      717        355          61   Digital United Inc.
 9498      680        295          54   BHARTI BT INTERNET LTD.
 4808      627       1164         142   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     4299       3416         339   bellsouth.net, inc. 
  209     2940       4033         623   Qwest 
 6298     2009        319         713   Cox Communicatons 
20115     1811       1425         712   Charter Communications 
 1785     1668        717         154   PaeTec Communications, Inc.
 2386     1554        699         895   AT&T Data Communications Serv
 4323     1540       1083         373   Time Warner Telecom
 7018     1414       5795         984   AT&T WorldNet Services
11492     1212        152          11   Cable One 
 6478     1203        242         182   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      432       1761         381   TDC Tele Danmark
30890      338         90         182   SC Kappa Invexim SRL
 3301      330       1428         301   TeliaNet Sweden
 3215      328       2756         107   France Telecom Transpac
 3320      324       7063         273   Deutsche Telekom AG
 8866      324         79          22   Bulgarian Telecommunication C
 8452      316        188          11   TEDATA
 5462      301        794          27   Telewest Broadband
 8551      287        270          37   Bezeq International
  680      275       2047         265   DFN-IP service G-WiN

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     1412       2847         223   UniNet S.A. de C.V. 
11830      669        299           9   Instituto Costarricense de El
22047      564        270          14   VTR PUNTO NET S.A. 
 7303      493        242          71   Telecom Argentina Stet-France
10620      483        118          93   TVCABLE BOGOTA 
16814      426         27          10   NSS, S.A. 
 6471      420         85          48   ENTEL CHILE S.A. 
11172      407        118          71   Servicios Alestra S.A de C.V 
14117      343         23           9   Telefonica del Sur S.A. 
28573      339        443          28   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      545         71          39   LINKdotNET AS number
20858      401         34           3   EgyNet
 3741      265        855         223   The Internet Solution 
 2018      234        215         139   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      137         10          13   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
 5713      119        555          69   Telkom SA Ltd 
33776      116          6           3   Starcomms Nigeria Limited
29571      109         13           9   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     4299       3416         339   bellsouth.net, inc. 
  209     2940       4033         623   Qwest 
 6298     2009        319         713   Cox Communicatons 
20115     1811       1425         712   Charter Communications 
 1785     1668        717         154   PaeTec Communications, Inc.
 2386     1554        699         895   AT&T Data Communications Serv
 4323     1540       1083         373   Time Warner Telecom
 4755     1454        521         190   TATA Communications formerly 
 7018     1414       5795         984   AT&T WorldNet Services
 8151     1412       2847         223   UniNet S.A. de C.V. 

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

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

  ASN   No of nets  Net Savings Description
  209      2940        2317      Qwest 
 1785      1668        1514      PaeTec Communications, Inc.
 6298      2009        1296      Cox Communicatons 
17488      1393        1294      Hathway IP Over Cable Interne
 4755      1454        1264      TATA Communications formerly 
11492      1212        1201      Cable One 
 8151      1412        1189      UniNet S.A. de C.V. 
 4323      1540        1167      Time Warner Telecom
20115      1811        1099      Charter Communications 
18566      1058        1048      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
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
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 

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 
24.142.40.0/21        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
41.189.32.0/21       29571     Ci Telecom Autonomous system 
41.215.208.0/20       8657     CPRM Autonomous System
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.133.0.0/19        16082     Spitfire Digital Networks Aut
63.140.213.0/24      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      /12:147     
/13:295     /14:531     /15:1060    /16:10127   /17:4401    /18:7603    
/19:16337   /20:19159   /21:18671   /22:23526   /23:24569   /24:141200  
/25:816     /26:979     /27:769     /28:89      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2847          4299      bellsouth.net, inc. 
 6298     1983          2009      Cox Communicatons 
  209     1698          2940      Qwest 
 2386     1234          1554      AT&T Data Communications Serv
17488     1200          1393      Hathway IP Over Cable Interne
11492     1188          1212      Cable One 
 1785     1128          1668      PaeTec Communications, Inc.
 6478     1095          1203      AT&T Worldnet Services 
18566     1039          1058      Covad Communications 
 9583      977          1109      Sify Limited

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

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

   4:8         8:142      12:2173     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1128     31:1        32:58     
  38:502      40:92       41:712      43:1        44:2        47:12     
  52:3        55:3        56:3        57:26       58:520      59:526    
  60:452      61:974      62:1233     63:2034     64:3219     65:2418   
  66:3509     67:1264     68:802      69:2321     70:859      71:244    
  72:2053     73:7        74:1217     75:161      76:265      77:804    
  78:839      79:255      80:929      81:863      82:603      83:381    
  84:581      85:1006     86:401      87:709      88:340      89:1384   
  90:20       91:1561     92:267      93:895      94:227      96:79     
  97:88       98:338      99:8       113:1       114:104     115:100    
 116:998     117:373     118:236     119:515     120:93      121:599    
 122:853     123:444     124:863     125:1183    128:356     129:201    
 130:134     131:416     132:72      133:9       134:180     135:32     
 136:217     137:97      138:142     139:81      140:511     141:106    
 142:408     143:299     144:328     145:51      146:371     147:159    
 148:524     149:210     150:128     151:182     152:149     153:136    
 154:10      155:283     156:173     157:301     158:168     159:305    
 160:275     161:138     162:255     163:131     164:518     165:509    
 166:365     167:336     168:635     169:143     170:452     171:33     
 172:10      173:34      187:16      188:1       189:309     190:2235   
 192:5750    193:4147    194:3265    195:2584    196:1006    198:3740   
 199:3295    200:5538    201:1435    202:7855    203:8083    204:3943   
 205:2154    206:2349    207:2742    208:3680    209:3437    210:2580   
 211:1096    212:1464    213:1595    214:175     215:50      216:4355   
 217:1237    218:348     219:435     220:1061    221:416     222:287    


End of report




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