[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 26 12:12:22 CST 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 27 Dec, 2008

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

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

BGP routing table entries examined:                              275775
    Prefixes after maximum aggregation:                          131490
    Deaggregation factor:                                          2.10
    Unique aggregates announced to Internet:                     133298
Total ASes present in the Internet Routing Table:                 30186
    Prefixes per ASN:                                              9.14
Origin-only ASes present in the Internet Routing Table:           26269
Origin ASes announcing only one prefix:                           12810
Transit ASes present in the Internet Routing Table:                3917
Transit-only ASes present in the Internet Routing Table:             98
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      23
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               524
    Unregistered ASNs in the Routing Table:                         195
Number of 32-bit ASNs allocated by the RIRs:                         70
Prefixes from 32-bit ASNs in the Routing Table:                      12
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            211
Number of addresses announced to Internet:                   1979718688
    Equivalent to 118 /8s, 0 /16s and 28 /24s
    Percentage of available address space announced:               53.4
    Percentage of allocated address space announced:               63.1
    Percentage of available address space allocated:               84.6
    Percentage of address space in use by end-sites:               75.0
Total number of prefixes smaller than registry allocations:      135418

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

Prefixes being announced by APNIC Region ASes:                    63555
    Total APNIC prefixes after maximum aggregation:               22690
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           60451
    Unique aggregates announced from the APNIC address blocks:    26032
APNIC Region origin ASes present in the Internet Routing Table:    3500
    APNIC Prefixes per ASN:                                       17.27
APNIC Region origin ASes announcing only one prefix:                959
APNIC Region transit ASes present in the Internet Routing Table:    537
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              394956192
    Equivalent to 23 /8s, 138 /16s and 141 /24s
    Percentage of available APNIC address space announced:         78.5

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, 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,
                       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:                    123300
    Total ARIN prefixes after maximum aggregation:                64626
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:            92403
    Unique aggregates announced from the ARIN address blocks:     35088
ARIN Region origin ASes present in the Internet Routing Table:    12672
    ARIN Prefixes per ASN:                                         7.29
ARIN Region origin ASes announcing only one prefix:                4886
ARIN Region transit ASes present in the Internet Routing Table:    1215
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               405361440
    Equivalent to 24 /8s, 41 /16s and 83 /24s
    Percentage of available ARIN address space announced:          77.9

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, 108/8, 173/8,
                       174/8, 184/8, 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:                     61339
    Total RIPE prefixes after maximum aggregation:                36726
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            56967
    Unique aggregates announced from the RIPE address blocks:     37920
RIPE Region origin ASes present in the Internet Routing Table:    12423
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                6542
RIPE Region transit ASes present in the Internet Routing Table:    1888
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          17
Number of RIPE addresses announced to Internet:               383880800
    Equivalent to 22 /8s, 225 /16s and 142 /24s
    Percentage of available RIPE address space announced:          88.0

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:                   23044
    Total LACNIC prefixes after maximum aggregation:               5649
    LACNIC Deaggregation factor:                                   4.08
Prefixes being announced from the LACNIC address blocks:          21061
    Unique aggregates announced from the LACNIC address blocks:   11616
LACNIC Region origin ASes present in the Internet Routing Table:   1040
    LACNIC Prefixes per ASN:                                      20.25
LACNIC Region origin ASes announcing only one prefix:               336
LACNIC Region transit ASes present in the Internet Routing Table:   168
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              59283840
    Equivalent to 3 /8s, 136 /16s and 153 /24s
    Percentage of available LACNIC address space announced:        58.9

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:                   4031
    Total AfriNIC prefixes after maximum aggregation:              1380
    AfriNIC Deaggregation factor:                                  2.92
Prefixes being announced from the AfriNIC address blocks:          4254
    Unique aggregates announced from the AfriNIC address blocks:   2184
AfriNIC Region origin ASes present in the Internet Routing Table:   274
    AfriNIC Prefixes per ASN:                                     15.53
AfriNIC Region origin ASes announcing only one prefix:               87
AfriNIC Region transit ASes present in the Internet Routing Table:   56
Average AfriNIC Region AS path length visible:                      4.4
    Max AfriNIC Region AS path length visible:                       22
Number of AfriNIC addresses announced to Internet:             13105408
    Equivalent to 0 /8s, 199 /16s and 249 /24s
    Percentage of available AfriNIC address space announced:       26.0

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
 4766     1642       6409         368   Korea Telecom (KIX)
17488     1466        102         101   Hathway IP Over Cable Interne
 4755     1177        475         152   TATA Communications formerly 
 9583      904        131          66   Sify Limited
 4134      892      15833         358   CHINANET-BACKBONE
18101      782        168          31   Reliance Infocom Ltd Internet
 9498      756        291          45   BHARTI BT INTERNET LTD.
 4780      725        358          64   Digital United Inc.
 7545      658        152          81   TPG Internet Pty Ltd
24560      641        226         165   Bharti Airtel Ltd.

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     4382       3435         345   bellsouth.net, inc. 
  209     2845       4032         623   Qwest 
20115     1851       1473         743   Charter Communications 
 1785     1707        717         155   PaeTec Communications, Inc.
 6478     1613        372         274   AT&T Worldnet Services 
 4323     1608       1067         379   Time Warner Telecom
 2386     1586        706         897   AT&T Data Communications Serv
 7018     1424       5872         984   AT&T WorldNet Services
11492     1220        192          12   Cable One 
 3356     1104      10994         431   Level 3 Communications, LLC 

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      433       1764         382   TDC Tele Danmark
30890      391         80         203   SC Kappa Invexim SRL
12479      379        578           6   Uni2 Autonomous System
 3301      336       1413         303   TeliaNet Sweden
 3320      333       7065         282   Deutsche Telekom AG
 8866      331        109          22   Bulgarian Telecommunication C
29049      323         26           3   AzerSat LLC.
 3215      321       2856          95   France Telecom Transpac
 8551      304        287          35   Bezeq International
25233      289         44          24   Awalnet

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     1402       2832         224   UniNet S.A. de C.V. 
11830      671        299           9   Instituto Costarricense de El
10620      658        138          57   TVCABLE BOGOTA 
22047      565        302          14   VTR PUNTO NET S.A. 
 7303      503        249          74   Telecom Argentina Stet-France
 6471      429         86          43   ENTEL CHILE S.A. 
16814      426         27          10   NSS, S.A. 
11172      400        118          72   Servicios Alestra S.A de C.V 
28573      365        491          24   NET Servicos de Comunicao S.A
 7738      360        730          27   Telecomunicacoes da Bahia 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      439         72          54   LINKdotNET AS number
 3741      270        857         227   The Internet Solution 
20858      256         34           3   This AS will be used to conne
 2018      239        215         140   Tertiary Education Network 
 6713      145        139          12   Itissalat Al-MAGHRIB
33783      143         10          17   EEPAD TISP TELECOM & INTERNET
29571      121         15           8   Ci Telecom Autonomous system 
 5536      120          8          17   Internet Egypt Network
 5713      119        555          68   Telkom SA Ltd 
33776      118          6           3   Starcomms Nigeria Limited

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     4382       3435         345   bellsouth.net, inc. 
  209     2845       4032         623   Qwest 
20115     1851       1473         743   Charter Communications 
 1785     1707        717         155   PaeTec Communications, Inc.
 4766     1642       6409         368   Korea Telecom (KIX)
 6478     1613        372         274   AT&T Worldnet Services 
 4323     1608       1067         379   Time Warner Telecom
 2386     1586        706         897   AT&T Data Communications Serv
17488     1466        102         101   Hathway IP Over Cable Interne
 7018     1424       5872         984   AT&T WorldNet Services

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

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

  ASN   No of nets  Net Savings Description
  209      2845        2222      Qwest 
 1785      1707        1552      PaeTec Communications, Inc.
17488      1466        1365      Hathway IP Over Cable Interne
 6478      1613        1339      AT&T Worldnet Services 
 4766      1642        1274      Korea Telecom (KIX)
 4323      1608        1229      Time Warner Telecom
11492      1220        1208      Cable One 
 8151      1402        1178      UniNet S.A. de C.V. 
20115      1851        1108      Charter Communications 
18566      1060        1050      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         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
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
24.75.160.0/19        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
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
63.143.251.0/24      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        /8:20       /9:9       /10:20      /11:54      /12:158     
/13:309     /14:562     /15:1099    /16:10278   /17:4531    /18:7748    
/19:16669   /20:19590   /21:19150   /22:24337   /23:24847   /24:144305  
/25:650     /26:809     /27:518     /28:96      /29:8       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2865          4382      bellsouth.net, inc. 
  209     1591          2845      Qwest 
 4766     1374          1642      Korea Telecom (KIX)
 2386     1263          1586      AT&T Data Communications Serv
17488     1256          1466      Hathway IP Over Cable Interne
11492     1190          1220      Cable One 
 1785     1168          1707      PaeTec Communications, Inc.
 6478     1131          1613      AT&T Worldnet Services 
18566     1041          1060      Covad Communications 
20115      930          1851      Charter Communications 

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

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

   4:12        8:172      12:2229     13:2        15:21       16:3      
  17:5        20:35       24:1104     32:54       38:528      40:96     
  41:825      43:1        44:2        47:9        52:3        55:3      
  56:3        57:26       58:519      59:597      60:456      61:1107   
  62:1086     63:2002     64:3416     65:2447     66:3611     67:1444   
  68:655      69:2430     70:531      71:173      72:1589     73:7      
  74:1338     75:193      76:306      77:899      78:522      79:309    
  80:940      81:838      82:543      83:382      84:592      85:1058   
  86:494      87:651      88:349      89:1383     90:41       91:1801   
  92:303      93:1077     94:828      95:141      96:95       97:151    
  98:173      99:10      110:1       111:1       113:56      114:146    
 115:173     116:1095    117:421     118:248     119:587     120:120    
 121:700     122:883     123:464     124:765     125:1337    128:359    
 129:220     130:135     131:410     132:72      133:9       134:323    
 135:33      136:224     137:133     138:144     139:92      140:414    
 141:110     142:381     143:290     144:315     145:53      146:371    
 147:142     148:606     149:219     150:139     151:208     152:149    
 153:131     154:10      155:250     156:168     157:304     158:163    
 159:300     160:274     161:131     162:255     163:142     164:516    
 165:501     166:364     167:348     168:666     169:159     170:461    
 171:38      172:10      173:138     174:17      187:17      188:1      
 189:353     190:2532    192:5812    193:4152    194:3291    195:2663   
 196:1029    198:3696    199:3316    200:5578    201:1505    202:7775   
 203:8073    204:3922    205:2161    206:2323    207:2771    208:3786   
 209:3498    210:2673    211:1165    212:1554    213:1618    214:69     
 215:29      216:4519    217:1196    218:377     219:402     220:1226   
 221:410     222:299    

End of report
-- 
This is the SANOG (http://www.sanog.org/) mailing list.





More information about the NANOG mailing list