Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 1 13:07:59 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 02 Aug, 2008

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

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

BGP routing table entries examined:                              265184
    Prefixes after maximum aggregation:                          129461
    Deaggregation factor:                                          2.05
    Unique aggregates announced to Internet:                     129300
Total ASes present in the Internet Routing Table:                 28821
    Prefixes per ASN:                                              9.20
Origin-only ASes present in the Internet Routing Table:           25126
Origin ASes announcing only one prefix:                           12150
Transit ASes present in the Internet Routing Table:                3695
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:                                      21
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               572
    Unregistered ASNs in the Routing Table:                         211
Number of 32-bit ASNs allocated by the RIRs:                         53
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:            791
Number of addresses announced to Internet:                   1888212576
    Equivalent to 112 /8s, 139 /16s and 214 /24s
    Percentage of available address space announced:               50.9
    Percentage of allocated address space announced:               61.9
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.0
Total number of prefixes smaller than registry allocations:      129790

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

Prefixes being announced by APNIC Region ASes:                    60837
    Total APNIC prefixes after maximum aggregation:               22712
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           57817
    Unique aggregates announced from the APNIC address blocks:    26028
APNIC Region origin ASes present in the Internet Routing Table:    3320
    APNIC Prefixes per ASN:                                       17.41
APNIC Region origin ASes announcing only one prefix:                878
APNIC Region transit ASes present in the Internet Routing Table:    513
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              369846304
    Equivalent to 22 /8s, 11 /16s and 104 /24s
    Percentage of available APNIC address space announced:         78.7

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:                    121736
    Total ARIN prefixes after maximum aggregation:                65145
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:            91199
    Unique aggregates announced from the ARIN address blocks:     34975
ARIN Region origin ASes present in the Internet Routing Table:    12333
    ARIN Prefixes per ASN:                                         7.39
ARIN Region origin ASes announcing only one prefix:                4760
ARIN Region transit ASes present in the Internet Routing Table:    1172
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               359625120
    Equivalent to 21 /8s, 111 /16s and 113 /24s
    Percentage of available ARIN address space announced:          73.9

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:                     57109
    Total RIPE prefixes after maximum aggregation:                34644
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            52259
    Unique aggregates announced from the RIPE address blocks:     35059
RIPE Region origin ASes present in the Internet Routing Table:    11666
    RIPE Prefixes per ASN:                                         4.48
RIPE Region origin ASes announcing only one prefix:                6118
RIPE Region transit ASes present in the Internet Routing Table:    1753
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               368008320
    Equivalent to 21 /8s, 239 /16s and 92 /24s
    Percentage of available RIPE address space announced:          84.4

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:                   20879
    Total LACNIC prefixes after maximum aggregation:               5274
    LACNIC Deaggregation factor:                                   3.96
Prefixes being announced from the LACNIC address blocks:          19108
    Unique aggregates announced from the LACNIC address blocks:   10762
LACNIC Region origin ASes present in the Internet Routing Table:    971
    LACNIC Prefixes per ASN:                                      19.68
LACNIC Region origin ASes announcing only one prefix:               316
LACNIC Region transit ASes present in the Internet Routing Table:   162
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              54027264
    Equivalent to 3 /8s, 56 /16s and 100 /24s
    Percentage of available LACNIC address space announced:        53.7

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:                   4054
    Total AfriNIC prefixes after maximum aggregation:              1210
    AfriNIC Deaggregation factor:                                  3.35
Prefixes being announced from the AfriNIC address blocks:          4420
    Unique aggregates announced from the AfriNIC address blocks:   1902
AfriNIC Region origin ASes present in the Internet Routing Table:   245
    AfriNIC Prefixes per ASN:                                     18.04
AfriNIC Region origin ASes announcing only one prefix:               78
AfriNIC Region transit ASes present in the Internet Routing Table:   47
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12521984
    Equivalent to 0 /8s, 191 /16s and 18 /24s
    Percentage of available AfriNIC address space announced:       37.3

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     1688        345         177   Videsh Sanchar Nigam Ltd. Aut
17488     1267         87          91   Hathway IP Over Cable Interne
 9583     1146         87         486   Sify Limited
 4766      855       6390         348   Korea Telecom (KIX)
 4134      831      13619         339   CHINANET-BACKBONE
23577      830         35         702   Korea Telecom (ATM-MPLS)
 4780      712        353          64   Digital United Inc.
18101      711        167          33   Reliance Infocom Ltd Internet
 9498      663        291          54   BHARTI BT INTERNET LTD.
 4808      623       1120         138   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     3205       3359         213   bellsouth.net, inc. 
  209     2982       3860         621   Qwest 
 6298     1778        270         769   Cox Communicatons 
 4323     1491       1062         380   Time Warner Telecom
 2386     1486        673         880   AT&T Data Communications Serv
 7018     1409       5829         987   AT&T WorldNet Services
 1785     1390        478         102   AppliedTheory Corporation 
11492     1215        151          23   Cable One 
20115     1115       1080         572   Charter Communications 
18566     1045        296          10   Covad Communications 

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       1792         372   TDC Tele Danmark
 3215      358       2756         106   France Telecom Transpac
 8452      347        188          11   TEDATA
 3301      332       1460         303   TeliaNet Sweden
 3320      322       7047         270   Deutsche Telekom AG
 8866      316         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      287        270          38   Bezeq International
  680      274       2047         264   DFN-IP service G-WiN
 6746      267        125         242   Dynamic Network Technologies,

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     1447       2591         226   UniNet S.A. de C.V. 
11830      612        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      474        234          62   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      417         85          48   ENTEL CHILE S.A. 
11172      408        118          71   Servicios Alestra S.A de C.V 
10620      405        106          58   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      329         23         104   NEWCOM AMERICAS 

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      479         62          20   LINKdotNET AS number
20858      398         34           3   EgyNet
 3741      268        855         223   The Internet Solution 
 2018      212        213         131   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      135         10          12   EEPAD TISP TELECOM & INTERNET
 5713      129        540          74   Telkom SA Ltd 
 5536      120          8          17   Internet Egypt Network
33776      115          6           3   Starcomms Nigeria Limited
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     3205       3359         213   bellsouth.net, inc. 
  209     2982       3860         621   Qwest 
 6298     1778        270         769   Cox Communicatons 
 4755     1688        345         177   Videsh Sanchar Nigam Ltd. Aut
 4323     1491       1062         380   Time Warner Telecom
 2386     1486        673         880   AT&T Data Communications Serv
 8151     1447       2591         226   UniNet S.A. de C.V. 
 7018     1409       5829         987   AT&T WorldNet Services
 1785     1390        478         102   AppliedTheory Corporation 
17488     1267         87          91   Hathway IP Over Cable Interne

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

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

  ASN   No of nets  Net Savings Description
  209      2982        2361      Qwest 
 4755      1688        1511      Videsh Sanchar Nigam Ltd. Aut
 1785      1390        1288      AppliedTheory Corporation 
 8151      1447        1221      UniNet S.A. de C.V. 
11492      1215        1192      Cable One 
17488      1267        1176      Hathway IP Over Cable Interne
 4323      1491        1111      Time Warner Telecom
18566      1045        1035      Covad Communications 
 6298      1778        1009      Cox Communicatons 
22773       969         906      Cox Communications, Inc.

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
27220   UNALLOCATED   12.35.204.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
24.48.244.0/23        7843     Adelphia Corp. 
24.48.246.0/24        7843     Adelphia Corp. 
24.51.159.0/24        7843     Adelphia Corp. 
24.54.23.0/24         7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.75.192.0/18        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

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      /11:46      /12:147     
/13:294     /14:520     /15:1051    /16:10043   /17:4339    /18:7536    
/19:15968   /20:18587   /21:18269   /22:22879   /23:23873   /24:138870  
/25:833     /26:1022    /27:758     /28:88      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2034          3205      bellsouth.net, inc. 
 6298     1752          1778      Cox Communicatons 
  209     1734          2982      Qwest 
11492     1196          1215      Cable One 
 2386     1179          1486      AT&T Data Communications Serv
17488     1077          1267      Hathway IP Over Cable Interne
 1785     1047          1390      AppliedTheory Corporation 
 4755     1039          1688      Videsh Sanchar Nigam Ltd. Aut
18566     1026          1045      Covad Communications 
 6478     1007          1016      AT&T Worldnet Services 

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

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

   4:8         8:128      12:2105     13:2        14:1        15:22     
  16:3        17:5        18:13       20:35       24:1098     32:60     
  38:471      40:92       41:698      43:1        44:2        47:12     
  52:3        55:3        56:3        57:25       58:527      59:511    
  60:456      61:990      62:1201     63:2039     64:3284     65:2381   
  66:3510     67:1225     68:746      69:2291     70:822      71:118    
  72:2008     73:6        74:1071     75:153      76:305      77:757    
  78:765      79:212      80:979      81:847      82:602      83:376    
  84:567      85:957      86:407      87:687      88:338      89:1315   
  90:31       91:1402     92:237      93:721      94:89       96:52     
  97:41       98:290      99:4       112:1       113:1       114:76     
 115:28      116:903     117:328     118:189     119:446     120:59     
 121:571     122:807     123:371     124:904     125:1175    128:360    
 129:198     130:135     131:412     132:66      133:9       134:186    
 135:33      136:223     137:95      138:146     139:93      140:498    
 141:98      142:405     143:321     144:393     145:51      146:371    
 147:157     148:519     149:194     150:125     151:182     152:137    
 153:136     154:10      155:252     156:173     157:291     158:187    
 159:239     160:274     161:118     162:214     163:155     164:517    
 165:454     166:316     167:330     168:624     169:139     170:422    
 171:32      172:10      188:1       189:362     190:2243    192:5787   
 193:4125    194:3239    195:2547    196:1031    198:3725    199:3309   
 200:5566    201:1473    202:7666    203:8056    204:3979    205:2136   
 206:2359    207:2761    208:3481    209:3493    210:2590    211:1078   
 212:1425    213:1602    214:161     215:49      216:4517    217:1243   
 218:343     219:428     220:1059    221:455     222:312    

End of report




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