Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 10 13:09:08 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 11 Oct, 2008

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

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

BGP routing table entries examined:                              270790
    Prefixes after maximum aggregation:                          130670
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     131713
Total ASes present in the Internet Routing Table:                 29477
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25621
Origin ASes announcing only one prefix:                           12506
Transit ASes present in the Internet Routing Table:                3856
Transit-only ASes present in the Internet Routing Table:             82
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      18
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               569
    Unregistered ASNs in the Routing Table:                         208
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:            755
Number of addresses announced to Internet:                   1911844672
    Equivalent to 113 /8s, 244 /16s and 111 /24s
    Percentage of available address space announced:               51.6
    Percentage of allocated address space announced:               62.6
    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:      132945

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

Prefixes being announced by APNIC Region ASes:                    62393
    Total APNIC prefixes after maximum aggregation:               23186
    APNIC Deaggregation factor:                                    2.69
Prefixes being announced from the APNIC address blocks:           59270
    Unique aggregates announced from the APNIC address blocks:    26697
APNIC Region origin ASes present in the Internet Routing Table:    3402
    APNIC Prefixes per ASN:                                       17.42
APNIC Region origin ASes announcing only one prefix:                903
APNIC Region transit ASes present in the Internet Routing Table:    543
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              378110880
    Equivalent to 22 /8s, 137 /16s and 131 /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:                    123078
    Total ARIN prefixes after maximum aggregation:                64823
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            92344
    Unique aggregates announced from the ARIN address blocks:     35062
ARIN Region origin ASes present in the Internet Routing Table:    12519
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4856
ARIN Region transit ASes present in the Internet Routing Table:    1197
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               365498400
    Equivalent to 21 /8s, 201 /16s and 16 /24s
    Percentage of available ARIN address space announced:          75.1

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:                     58965
    Total RIPE prefixes after maximum aggregation:                35511
    RIPE Deaggregation factor:                                     1.66
Prefixes being announced from the RIPE address blocks:            54163
    Unique aggregates announced from the RIPE address blocks:     36250
RIPE Region origin ASes present in the Internet Routing Table:    12011
    RIPE Prefixes per ASN:                                         4.51
RIPE Region origin ASes announcing only one prefix:                6332
RIPE Region transit ASes present in the Internet Routing Table:    1842
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               375037856
    Equivalent to 22 /8s, 90 /16s and 159 /24s
    Percentage of available RIPE address space announced:          86.0

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:                   21825
    Total LACNIC prefixes after maximum aggregation:               5399
    LACNIC Deaggregation factor:                                   4.04
Prefixes being announced from the LACNIC address blocks:          19874
    Unique aggregates announced from the LACNIC address blocks:   11074
LACNIC Region origin ASes present in the Internet Routing Table:   1010
    LACNIC Prefixes per ASN:                                      19.68
LACNIC Region origin ASes announcing only one prefix:               332
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:              57342720
    Equivalent to 3 /8s, 106 /16s and 251 /24s
    Percentage of available LACNIC address space announced:        57.0

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:                   3963
    Total AfriNIC prefixes after maximum aggregation:              1310
    AfriNIC Deaggregation factor:                                  3.03
Prefixes being announced from the AfriNIC address blocks:          4229
    Unique aggregates announced from the AfriNIC address blocks:   2056
AfriNIC Region origin ASes present in the Internet Routing Table:   261
    AfriNIC Prefixes per ASN:                                     16.20
AfriNIC Region origin ASes announcing only one prefix:               83
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:             12835328
    Equivalent to 0 /8s, 195 /16s and 218 /24s
    Percentage of available AfriNIC address space announced:       38.3

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     1476        522         197   TATA Communications formerly 
17488     1420         96         103   Hathway IP Over Cable Interne
 9583     1108         87         476   Sify Limited
 4766      885       6407         362   Korea Telecom (KIX)
 4134      843      13664         346   CHINANET-BACKBONE
23577      811         34         694   Korea Telecom (ATM-MPLS)
18101      781        167          26   Reliance Infocom Ltd Internet
 4780      716        355          61   Digital United Inc.
 9498      686        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     4296       3416         339   bellsouth.net, inc. 
  209     2938       4033         621   Qwest 
 6298     2011        319         711   Cox Communicatons 
20115     1878       1424         715   Charter Communications 
 1785     1670        717         154   PaeTec Communications, Inc.
 2386     1558        699         896   AT&T Data Communications Serv
 4323     1553       1084         376   Time Warner Telecom
 7018     1410       5859         988   AT&T WorldNet Services
 6478     1312        273         197   AT&T Worldnet Services 
11492     1216        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      435       1777         384   TDC Tele Danmark
30890      348         94         188   SC Kappa Invexim SRL
 3215      328       2756         107   France Telecom Transpac
 3301      328       1428         299   TeliaNet Sweden
 3320      325       7063         274   Deutsche Telekom AG
 8866      324         79          22   Bulgarian Telecommunication C
 8452      308        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     1419       2849         219   UniNet S.A. de C.V. 
11830      669        299           9   Instituto Costarricense de El
22047      564        270          14   VTR PUNTO NET S.A. 
10620      504        122          61   TVCABLE BOGOTA 
 7303      490        241          69   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      420         85          49   ENTEL CHILE S.A. 
11172      407        118          71   Servicios Alestra S.A de C.V 
28573      372        460          23   NET Servicos de Comunicao S.A
14117      343         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      543         71          39   LINKdotNET AS number
 3741      267        856         225   The Internet Solution 
 2018      235        215         139   Tertiary Education Network 
20858      194         34           3   EgyNet
 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     4296       3416         339   bellsouth.net, inc. 
  209     2938       4033         621   Qwest 
 6298     2011        319         711   Cox Communicatons 
20115     1878       1424         715   Charter Communications 
 1785     1670        717         154   PaeTec Communications, Inc.
 2386     1558        699         896   AT&T Data Communications Serv
 4323     1553       1084         376   Time Warner Telecom
 4755     1476        522         197   TATA Communications formerly 
17488     1420         96         103   Hathway IP Over Cable Interne
 8151     1419       2849         219   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      2938        2317      Qwest 
 1785      1670        1516      PaeTec Communications, Inc.
17488      1420        1317      Hathway IP Over Cable Interne
 6298      2011        1300      Cox Communicatons 
 4755      1476        1279      TATA Communications formerly 
11492      1216        1205      Cable One 
 8151      1419        1200      UniNet S.A. de C.V. 
 4323      1553        1177      Time Warner Telecom
20115      1878        1163      Charter Communications 
 6478      1312        1115      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         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
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       /10:17      /11:46      /12:148     
/13:297     /14:536     /15:1063    /16:10150   /17:4411    /18:7643    
/19:16360   /20:19220   /21:18775   /22:23634   /23:24603   /24:141184  
/25:820     /26:989     /27:763     /28:87      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2843          4296      bellsouth.net, inc. 
 6298     1985          2011      Cox Communicatons 
  209     1696          2938      Qwest 
 2386     1238          1558      AT&T Data Communications Serv
17488     1213          1420      Hathway IP Over Cable Interne
11492     1192          1216      Cable One 
 1785     1131          1670      PaeTec Communications, Inc.
 6478     1098          1312      AT&T Worldnet Services 
18566     1043          1062      Covad Communications 
20115      987          1878      Charter Communications 

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

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

   4:8         8:140      12:2182     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1135     31:1        32:58     
  38:508      40:92       41:710      43:1        44:2        47:12     
  52:3        55:3        56:3        57:26       58:517      59:527    
  60:452      61:980      62:1098     63:2032     64:3227     65:2407   
  66:3518     67:1277     68:802      69:2320     70:861      71:275    
  72:2030     73:7        74:1239     75:188      76:275      77:816    
  78:843      79:266      80:907      81:871      82:600      83:392    
  84:553      85:1008     86:400      87:708      88:340      89:1376   
  90:22       91:1582     92:274      93:895      94:235      95:3      
  96:79       97:97       98:340      99:8       113:10      114:95     
 115:118     116:1007    117:374     118:237     119:517     120:93     
 121:599     122:855     123:440     124:867     125:1193    128:356    
 129:204     130:135     131:415     132:72      133:9       134:184    
 135:32      136:223     137:97      138:143     139:81      140:509    
 141:108     142:403     143:301     144:327     145:50      146:373    
 147:156     148:529     149:211     150:128     151:181     152:148    
 153:136     154:10      155:282     156:174     157:301     158:170    
 159:304     160:275     161:138     162:255     163:133     164:519    
 165:510     166:364     167:337     168:637     169:143     170:450    
 171:33      172:10      173:50      187:16      188:1       189:325    
 190:2299    192:5750    193:4130    194:3243    195:2584    196:1009   
 198:3740    199:3294    200:5553    201:1422    202:7771    203:8077   
 204:3923    205:2143    206:2341    207:2757    208:3666    209:3433   
 210:2564    211:1100    212:1482    213:1544    214:169     215:50     
 216:4393    217:1237    218:346     219:440     220:1054    221:416    
 222:290    

End of report




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