[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 2 18:45:18 UTC 2009


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 03 Oct, 2009

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

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

BGP routing table entries examined:                              299282
    Prefixes after maximum aggregation:                          140261
    Deaggregation factor:                                          2.13
    Unique aggregates announced to Internet:                     148558
Total ASes present in the Internet Routing Table:                 32294
    Prefixes per ASN:                                              9.27
Origin-only ASes present in the Internet Routing Table:           28065
Origin ASes announcing only one prefix:                           13702
Transit ASes present in the Internet Routing Table:                4229
Transit-only ASes present in the Internet Routing Table:            102
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      31
    Max AS path prepend of ASN (45127)                               27
Prefixes from unregistered ASNs in the Routing Table:               529
    Unregistered ASNs in the Routing Table:                         123
Number of 32-bit ASNs allocated by the RIRs:                        289
Prefixes from 32-bit ASNs in the Routing Table:                     205
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            199
Number of addresses announced to Internet:                   2109742304
    Equivalent to 125 /8s, 192 /16s and 28 /24s
    Percentage of available address space announced:               56.9
    Percentage of allocated address space announced:               64.5
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               79.1
Total number of prefixes smaller than registry allocations:      144036

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

Prefixes being announced by APNIC Region ASes:                    71662
    Total APNIC prefixes after maximum aggregation:               25237
    APNIC Deaggregation factor:                                    2.84
Prefixes being announced from the APNIC address blocks:           68081
    Unique aggregates announced from the APNIC address blocks:    30363
APNIC Region origin ASes present in the Internet Routing Table:    3810
    APNIC Prefixes per ASN:                                       17.87
APNIC Region origin ASes announcing only one prefix:               1047
APNIC Region transit ASes present in the Internet Routing Table:    590
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         31
Number of APNIC addresses announced to Internet:              461477152
    Equivalent to 27 /8s, 129 /16s and 149 /24s
    Percentage of available APNIC address space announced:         78.6

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks    43/8,  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, 175/8, 180/8, 182/8, 183/8, 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:                    126890
    Total ARIN prefixes after maximum aggregation:                66668
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:           101368
    Unique aggregates announced from the ARIN address blocks:     38486
ARIN Region origin ASes present in the Internet Routing Table:    13250
    ARIN Prefixes per ASN:                                         7.65
ARIN Region origin ASes announcing only one prefix:                5126
ARIN Region transit ASes present in the Internet Routing Table:    1295
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               706349696
    Equivalent to 42 /8s, 26 /16s and 10 /24s
    Percentage of available ARIN address space announced:          61.9

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
                       53248-55295, 393216-394239
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  24/8,  26/8,  28/8,  29/8,
                        30/8,  32/8,  33/8,  34/8,  35/8,  38/8,  40/8,
                        44/8,  45/8,  47/8,  48/8,  52/8,  54/8,  55/8,
                        56/8,  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, 108/8, 173/8,
                       174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
                       208/8, 209/8, 214/8, 215/8, 216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     68650
    Total RIPE prefixes after maximum aggregation:                40215
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            62331
    Unique aggregates announced from the RIPE address blocks:     41788
RIPE Region origin ASes present in the Internet Routing Table:    13533
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7052
RIPE Region transit ASes present in the Internet Routing Table:    2037
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               399867584
    Equivalent to 23 /8s, 213 /16s and 126 /24s
    Percentage of available RIPE address space announced:          74.5

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, 47104-52223, 196608-197631
RIPE Address Blocks      2/8,  25/8,  46/8,  51/8,  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, 109/8, 178/8, 193/8, 194/8,
                       195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   25750
    Total LACNIC prefixes after maximum aggregation:               6325
    LACNIC Deaggregation factor:                                   4.07
Prefixes being announced from the LACNIC address blocks:          24046
    Unique aggregates announced from the LACNIC address blocks:   13497
LACNIC Region origin ASes present in the Internet Routing Table:   1187
    LACNIC Prefixes per ASN:                                      20.26
LACNIC Region origin ASes announcing only one prefix:               382
LACNIC Region transit ASes present in the Internet Routing Table:   193
Average LACNIC Region AS path length visible:                       4.2
    Max LACNIC Region AS path length visible:                        30
Number of LACNIC addresses announced to Internet:              66579712
    Equivalent to 3 /8s, 247 /16s and 237 /24s
    Percentage of available LACNIC address space announced:        66.1

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 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:                   5885
    Total AfriNIC prefixes after maximum aggregation:              1548
    AfriNIC Deaggregation factor:                                  3.80
Prefixes being announced from the AfriNIC address blocks:          4279
    Unique aggregates announced from the AfriNIC address blocks:   1536
AfriNIC Region origin ASes present in the Internet Routing Table:   322
    AfriNIC Prefixes per ASN:                                     13.29
AfriNIC Region origin ASes announcing only one prefix:               95
AfriNIC Region transit ASes present in the Internet Routing Table:   65
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12557312
    Equivalent to 0 /8s, 191 /16s and 156 /24s
    Percentage of available AfriNIC address space announced:       37.4

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1766       6995         456   Korea Telecom (KIX)
17488     1475        135         142   Hathway IP Over Cable Interne
 4755     1256        292         144   TATA Communications formerly 
 9583     1102         87         531   Sify Limited
 4134     1010      18168         391   CHINANET-BACKBONE
18101      979        204          33   Reliance Infocom Ltd Internet
 7545      885        198         100   TPG Internet Pty Ltd
 9829      805        625          20   BSNL National Internet Backbo
24560      774        285         164   Bharti Airtel Ltd., Telemedia
 4808      762       1518         181   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     4163       3626         313   bellsouth.net, inc. 
 4323     3692       1037         384   Time Warner Telecom
 1785     1758        714         138   PaeTec Communications, Inc.
 7018     1522       5859        1054   AT&T WorldNet Services
20115     1475       1475         669   Charter Communications 
 6478     1413        279         301   AT&T Worldnet Services 
 2386     1320        656         950   AT&T Data Communications Serv
 3356     1227      10963         435   Level 3 Communications, LLC 
11492     1130        208          12   Cable One 
22773     1111       2604          70   Cox Communications, Inc.

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
30890      494         93         203   Evolva Telecom
 3292      446       1900         393   TDC Tele Danmark
35805      442         40           5   United Telecom of Georgia
12479      426        578           6   Uni2 Autonomous System
  702      423       1822         341   UUNET - Commercial IP service
 9198      381        138          12   Kazakhtelecom Data Network Ad
 8866      356        110          21   Bulgarian Telecommunication C
 3301      352       1428         309   TeliaNet Sweden
 3320      352       7067         303   Deutsche Telekom AG
 3215      348       3128         110   France Telecom Transpac

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     1480       2899         245   UniNet S.A. de C.V. 
10620     1007        227          98   TVCABLE BOGOTA 
28573      758        639          86   NET Servicos de Comunicao S.A
 7303      650        343          99   Telecom Argentina Stet-France
22047      545        302          14   VTR PUNTO NET S.A. 
11830      475        310          61   Instituto Costarricense de El
11172      440         99          70   Servicios Alestra S.A de C.V 
14117      436         29          11   Telefonica del Sur S.A. 
 7738      427        858          29   Telecomunicacoes da Bahia S.A
 6471      421         96          31   ENTEL CHILE 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
 8452      981        188           7   TEDATA
24863      935         96          65   LINKdotNET AS number
 3741      272        856         234   The Internet Solution 
 2018      192        187         118   Tertiary Education Network 
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      139         14           6   Ci Telecom Autonomous system 
33776      125          7          11   Starcomms Nigeria Limited
24835      123         46           9   RAYA Telecom - Egypt
 5536      122          8          13   Internet Egypt Network
 5713      116        508          67   Telkom SA Ltd 

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     4163       3626         313   bellsouth.net, inc. 
 4323     3692       1037         384   Time Warner Telecom
 4766     1766       6995         456   Korea Telecom (KIX)
 1785     1758        714         138   PaeTec Communications, Inc.
 7018     1522       5859        1054   AT&T WorldNet Services
 8151     1480       2899         245   UniNet S.A. de C.V. 
17488     1475        135         142   Hathway IP Over Cable Interne
20115     1475       1475         669   Charter Communications 
 6478     1413        279         301   AT&T Worldnet Services 
 2386     1320        656         950   AT&T Data Communications Serv

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

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

  ASN   No of nets  Net Savings Description
 4323      3692        3308      Time Warner Telecom
 1785      1758        1620      PaeTec Communications, Inc.
17488      1475        1333      Hathway IP Over Cable Interne
 4766      1766        1310      Korea Telecom (KIX)
 8151      1480        1235      UniNet S.A. de C.V. 
11492      1130        1118      Cable One 
 6478      1413        1112      AT&T Worldnet Services 
 4755      1256        1112      TATA Communications formerly 
18566      1062        1052      Covad Communications 
22773      1111        1041      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         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         7018       AT&T WorldNet Servic
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
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.189.0/24      26452     Local Communications Networks
43.245.0.0/16         7502     Internetwork Kyoto
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

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        /8:20       /9:10      /10:24      /11:63      /12:176     
/13:354     /14:628     /15:1199    /16:10668   /17:4847    /18:8372    
/19:17493   /20:20889   /21:20988   /22:27160   /23:26806   /24:156790  
/25:924     /26:1078    /27:558     /28:172     /29:40      /30:15      
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2696          4163      bellsouth.net, inc. 
 4323     2351          3692      Time Warner Telecom
 4766     1439          1766      Korea Telecom (KIX)
17488     1237          1475      Hathway IP Over Cable Interne
 1785     1224          1758      PaeTec Communications, Inc.
11492     1056          1130      Cable One 
18566     1043          1062      Covad Communications 
 9583      954          1102      Sify Limited
10620      913          1007      TVCABLE BOGOTA 
 8452      909           981      TEDATA

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

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

   2:1         4:14        8:227      12:2148     13:7        15:22     
  16:3        17:5        20:36       24:1168     32:52       34:2      
  38:601      40:97       41:1707     43:1        44:2        46:1      
  47:16       52:6        55:2        56:2        57:25       58:613    
  59:642      60:450      61:1077     62:1015     63:2008     64:3708   
  65:2400     66:4109     67:1791     68:964      69:2765     70:576    
  71:154      72:1658     73:2        74:1954     75:181      76:349    
  77:873      78:581      79:394      80:898      81:808      82:505    
  83:429      84:522      85:1003     86:382      87:666      88:387    
  89:1495     90:62       91:2578     92:408      93:1235     94:1184   
  95:1106     96:170      97:270      98:310      99:30      109:44     
 110:212     111:445     112:139     113:146     114:262     115:354    
 116:1111    117:549     118:328     119:773     120:136     121:780    
 122:1287    123:787     124:1047    125:1350    128:221     129:216    
 130:129     131:425     132:75      133:10      134:181     135:42     
 136:241     137:166     138:177     139:85      140:442     141:121    
 142:381     143:333     144:349     145:48      146:387     147:168    
 148:549     149:209     150:149     151:181     152:215     153:156    
 154:2       155:271     156:167     157:307     158:101     159:354    
 160:291     161:168     162:270     163:172     164:279     165:520    
 166:475     167:377     168:792     169:168     170:474     171:43     
 172:2       173:420     174:359     175:1       178:1       180:39     
 182:1       186:138     187:156     188:1055    189:601     190:3114   
 192:5776    193:4260    194:3285    195:2746    196:1142    198:3555   
 199:3354    200:5209    201:1343    202:7851    203:8247    204:3936   
 205:2199    206:2428    207:2970    208:3983    209:3487    210:2564   
 211:1130    212:1615    213:1623    214:157     215:39      216:4423   
 217:1332    218:413     219:449     220:1132    221:443     222:318    


End of report



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