Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 31 13:10:43 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 01 Nov, 2008

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

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

BGP routing table entries examined:                              272468
    Prefixes after maximum aggregation:                          131440
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     132812
Total ASes present in the Internet Routing Table:                 29655
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25822
Origin ASes announcing only one prefix:                           12567
Transit ASes present in the Internet Routing Table:                3833
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:                                      25
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               551
    Unregistered ASNs in the Routing Table:                         198
Number of 32-bit ASNs allocated by the RIRs:                         61
Prefixes from 32-bit ASNs in the Routing Table:                       8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            198
Number of addresses announced to Internet:                   1919227072
    Equivalent to 114 /8s, 101 /16s and 20 /24s
    Percentage of available address space announced:               51.8
    Percentage of allocated address space announced:               62.5
    Percentage of available address space allocated:               82.8
    Percentage of address space in use by end-sites:               74.0
Total number of prefixes smaller than registry allocations:      134099

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

Prefixes being announced by APNIC Region ASes:                    62538
    Total APNIC prefixes after maximum aggregation:               23309
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           59466
    Unique aggregates announced from the APNIC address blocks:    26845
APNIC Region origin ASes present in the Internet Routing Table:    3429
    APNIC Prefixes per ASN:                                       17.34
APNIC Region origin ASes announcing only one prefix:                920
APNIC Region transit ASes present in the Internet Routing Table:    532
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              380054176
    Equivalent to 22 /8s, 167 /16s and 42 /24s
    Percentage of available APNIC address space announced:         80.9

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:                    123152
    Total ARIN prefixes after maximum aggregation:                64896
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            92700
    Unique aggregates announced from the ARIN address blocks:     35162
ARIN Region origin ASes present in the Internet Routing Table:    12558
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4858
ARIN Region transit ASes present in the Internet Routing Table:    1191
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               368557728
    Equivalent to 21 /8s, 247 /16s and 190 /24s
    Percentage of available ARIN address space announced:          75.8

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:                     59984
    Total RIPE prefixes after maximum aggregation:                35947
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            55619
    Unique aggregates announced from the RIPE address blocks:     37167
RIPE Region origin ASes present in the Internet Routing Table:    12115
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                6369
RIPE Region transit ASes present in the Internet Routing Table:    1838
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               377144224
    Equivalent to 22 /8s, 122 /16s and 195 /24s
    Percentage of available RIPE address space announced:          86.5

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:                   22123
    Total LACNIC prefixes after maximum aggregation:               5537
    LACNIC Deaggregation factor:                                   4.00
Prefixes being announced from the LACNIC address blocks:          20171
    Unique aggregates announced from the LACNIC address blocks:   11290
LACNIC Region origin ASes present in the Internet Routing Table:   1025
    LACNIC Prefixes per ASN:                                      19.68
LACNIC Region origin ASes announcing only one prefix:               340
LACNIC Region transit ASes present in the Internet Routing Table:   170
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              57602048
    Equivalent to 3 /8s, 110 /16s and 240 /24s
    Percentage of available LACNIC address space announced:        57.2

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:                   4130
    Total AfriNIC prefixes after maximum aggregation:              1325
    AfriNIC Deaggregation factor:                                  3.12
Prefixes being announced from the AfriNIC address blocks:          4420
    Unique aggregates announced from the AfriNIC address blocks:   2125
AfriNIC Region origin ASes present in the Internet Routing Table:   264
    AfriNIC Prefixes per ASN:                                     16.74
AfriNIC Region origin ASes announcing only one prefix:               80
AfriNIC Region transit ASes present in the Internet Routing Table:   52
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC addresses announced to Internet:             12880640
    Equivalent to 0 /8s, 196 /16s and 139 /24s
    Percentage of available AfriNIC address space announced:       25.6

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
 4755     1494        522         200   TATA Communications formerly 
17488     1403         97         102   Hathway IP Over Cable Interne
 9583     1110         87         475   Sify Limited
 4766      883       6408         363   Korea Telecom (KIX)
 4134      869      13760         355   CHINANET-BACKBONE
23577      816         35         701   Korea Telecom (ATM-MPLS)
18101      782        161          67   Reliance Infocom Ltd Internet
 4780      724        357          63   Digital United Inc.
 9498      692        295          54   BHARTI BT INTERNET LTD.
 4808      627       1172         143   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     4356       3416         339   bellsouth.net, inc. 
  209     3051       4035         622   Qwest 
 6298     2047        323         683   Cox Communicatons 
 1785     1692        717         154   PaeTec Communications, Inc.
20115     1655       1441         723   Charter Communications 
 2386     1588        699         896   AT&T Data Communications Serv
 4323     1567       1084         376   Time Warner Telecom
 7018     1415       5872         981   AT&T WorldNet Services
 6478     1370        289         209   AT&T Worldnet Services 
11492     1211        152          11   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      432       1777         384   TDC Tele Danmark
30890      348         94         188   SC Kappa Invexim SRL
 8866      330        111          23   Bulgarian Telecommunication C
 3301      329       1428         300   TeliaNet Sweden
 3215      328       2756         106   France Telecom Transpac
 3320      326       7063         275   Deutsche Telekom AG
 8452      322        188          11   TEDATA
 5462      300        794          27   Telewest Broadband
25233      296         45          28   Awalnet
 8551      287        270          37   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       2833         220   UniNet S.A. de C.V. 
11830      670        299           9   Instituto Costarricense de El
22047      566        270          14   VTR PUNTO NET S.A. 
10620      545        126          59   TVCABLE BOGOTA 
 7303      494        243          70   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      419         85          48   ENTEL CHILE S.A. 
11172      407        118          72   Servicios Alestra S.A de C.V 
28573      338        464          23   NET Servicos de Comunicao S.A
14117      330         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      545         72          43   LINKdotNET AS number
 3741      269        856         225   The Internet Solution 
20858      259         34           3   EgyNet
 2018      236        215         139   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      138         10          13   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
33776      116          6           3   Starcomms Nigeria Limited
 5713      114        555          63   Telkom SA Ltd 
29571      113         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     4356       3416         339   bellsouth.net, inc. 
  209     3051       4035         622   Qwest 
 6298     2047        323         683   Cox Communicatons 
 1785     1692        717         154   PaeTec Communications, Inc.
20115     1655       1441         723   Charter Communications 
 2386     1588        699         896   AT&T Data Communications Serv
 4323     1567       1084         376   Time Warner Telecom
 4755     1494        522         200   TATA Communications formerly 
 7018     1415       5872         981   AT&T WorldNet Services
17488     1403         97         102   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      3051        2429      Qwest 
 1785      1692        1538      PaeTec Communications, Inc.
 6298      2047        1364      Cox Communicatons 
17488      1403        1301      Hathway IP Over Cable Interne
 4755      1494        1294      TATA Communications formerly 
11492      1211        1200      Cable One 
 4323      1567        1191      Time Warner Telecom
 8151      1400        1180      UniNet S.A. de C.V. 
 6478      1370        1161      AT&T Worldnet Services 
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 
24.142.40.0/21        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 
62.61.221.0/24       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. 

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       /10:18      /11:46      /12:149     
/13:298     /14:538     /15:1066    /16:10138   /17:4406    /18:7655    
/19:16460   /20:19364   /21:18859   /22:23884   /23:24861   /24:141928  
/25:819     /26:1007    /27:839     /28:89      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2852          4356      bellsouth.net, inc. 
 6298     2021          2047      Cox Communicatons 
  209     1767          3051      Qwest 
 2386     1270          1588      AT&T Data Communications Serv
17488     1194          1403      Hathway IP Over Cable Interne
11492     1187          1211      Cable One 
 1785     1155          1692      PaeTec Communications, Inc.
 6478     1105          1370      AT&T Worldnet Services 
18566     1040          1059      Covad Communications 
 9583      977          1110      Sify Limited

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

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

   4:12        8:140      12:2176     13:2        15:21       16:3      
  17:5        20:35       24:1082     32:50       38:515      40:92     
  41:748      43:1        44:2        47:13       52:3        55:3      
  56:3        57:26       58:511      59:530      60:452      61:1024   
  62:1139     63:2019     64:3267     65:2429     66:3497     67:1288   
  68:802      69:2337     70:875      71:138      72:2054     73:7      
  74:1273     75:168      76:284      77:940      78:631      79:282    
  80:937      81:870      82:609      83:395      84:583      85:1069   
  86:507      87:719      88:346      89:1365     90:22       91:1647   
  92:291      93:947      94:268      95:4        96:80       97:121    
  98:370      99:14      113:38      114:113     115:137     116:1000   
 117:385     118:239     119:503     120:98      121:613     122:854    
 123:461     124:853     125:1222    128:354     129:207     130:135    
 131:421     132:72      133:9       134:187     135:31      136:218    
 137:99      138:146     139:82      140:412     141:105     142:390    
 143:298     144:325     145:51      146:374     147:141     148:531    
 149:212     150:128     151:208     152:145     153:135     154:10     
 155:280     156:174     157:302     158:169     159:302     160:273    
 161:139     162:255     163:135     164:519     165:503     166:363    
 167:339     168:631     169:155     170:450     171:40      172:10     
 173:66      187:18      188:1       189:298     190:2332    192:5761   
 193:4150    194:3282    195:2645    196:1018    198:3706    199:3280   
 200:5551    201:1469    202:7778    203:8038    204:3928    205:2170   
 206:2294    207:2769    208:3734    209:3441    210:2579    211:1089   
 212:1532    213:1635    214:67      215:25      216:4422    217:1261   
 218:348     219:440     220:1060    221:416     222:301    

End of report




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