Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 3 13:14:51 CDT 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 04 Apr, 2009

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

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

BGP routing table entries examined:                              284279
    Prefixes after maximum aggregation:                          134697
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     139818
Total ASes present in the Internet Routing Table:                 30933
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           26928
Origin ASes announcing only one prefix:                           13076
Transit ASes present in the Internet Routing Table:                4005
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:                                      28
    Max AS path prepend of ASN (12445)                               18
Prefixes from unregistered ASNs in the Routing Table:               470
    Unregistered ASNs in the Routing Table:                         159
Number of 32-bit ASNs allocated by the RIRs:                        138
Prefixes from 32-bit ASNs in the Routing Table:                      19
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            226
Number of addresses announced to Internet:                   2024619360
    Equivalent to 120 /8s, 173 /16s and 61 /24s
    Percentage of available address space announced:               54.6
    Percentage of allocated address space announced:               63.9
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               76.2
Total number of prefixes smaller than registry allocations:      139764

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

Prefixes being announced by APNIC Region ASes:                    65840
    Total APNIC prefixes after maximum aggregation:               23485
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           62608
    Unique aggregates announced from the APNIC address blocks:    28689
APNIC Region origin ASes present in the Internet Routing Table:    3591
    APNIC Prefixes per ASN:                                       17.43
APNIC Region origin ASes announcing only one prefix:                964
APNIC Region transit ASes present in the Internet Routing Table:    554
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              409929248
    Equivalent to 24 /8s, 111 /16s and 6 /24s
    Percentage of available APNIC address space announced:         81.4

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:                    124467
    Total ARIN prefixes after maximum aggregation:                65792
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            93786
    Unique aggregates announced from the ARIN address blocks:     36438
ARIN Region origin ASes present in the Internet Routing Table:    12879
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4954
ARIN Region transit ASes present in the Internet Routing Table:    1241
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               420976128
    Equivalent to 25 /8s, 23 /16s and 150 /24s
    Percentage of available ARIN address space announced:          80.9

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:                     65066
    Total RIPE prefixes after maximum aggregation:                37870
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            59653
    Unique aggregates announced from the RIPE address blocks:     39647
RIPE Region origin ASes present in the Internet Routing Table:    12843
    RIPE Prefixes per ASN:                                         4.64
RIPE Region origin ASes announcing only one prefix:                6726
RIPE Region transit ASes present in the Internet Routing Table:    1932
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               392241952
    Equivalent to 23 /8s, 97 /16s and 35 /24s
    Percentage of available RIPE address space announced:          83.5

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
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, 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:                   23658
    Total LACNIC prefixes after maximum aggregation:               5819
    LACNIC Deaggregation factor:                                   4.07
Prefixes being announced from the LACNIC address blocks:          21871
    Unique aggregates announced from the LACNIC address blocks:   11884
LACNIC Region origin ASes present in the Internet Routing Table:   1087
    LACNIC Prefixes per ASN:                                      20.12
LACNIC Region origin ASes announcing only one prefix:               345
LACNIC Region transit ASes present in the Internet Routing Table:   176
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        28
Number of LACNIC addresses announced to Internet:              62027008
    Equivalent to 3 /8s, 178 /16s and 117 /24s
    Percentage of available LACNIC address space announced:        61.6

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247
                       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:                   4817
    Total AfriNIC prefixes after maximum aggregation:              1382
    AfriNIC Deaggregation factor:                                  3.49
Prefixes being announced from the AfriNIC address blocks:          4505
    Unique aggregates announced from the AfriNIC address blocks:   1345
AfriNIC Region origin ASes present in the Internet Routing Table:   289
    AfriNIC Prefixes per ASN:                                     15.59
AfriNIC Region origin ASes announcing only one prefix:               87
AfriNIC Region transit ASes present in the Internet Routing Table:   55
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10176000
    Equivalent to 0 /8s, 155 /16s and 70 /24s
    Percentage of available AfriNIC address space announced:       30.3

AfriNIC AS Blocks      36864-37887 & 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     1687       6929         394   Korea Telecom (KIX)
17488     1538        121          98   Hathway IP Over Cable Interne
 4755     1179        405         179   TATA Communications formerly 
 9583     1086         86         534   Sify Limited
 4134      918      16382         367   CHINANET-BACKBONE
 7545      784        164         106   TPG Internet Pty Ltd
18101      754        206          30   Reliance Infocom Ltd Internet
 9498      686        297          49   BHARTI BT INTERNET LTD.
24560      680        228         176   Bharti Airtel Ltd.
 9829      637        491          20   BSNL National Internet Backbo

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     4315       3669         346   bellsouth.net, inc. 
  209     2656       4151         623   Qwest 
 4323     1816       1049         376   Time Warner Telecom
 1785     1742        717         139   PaeTec Communications, Inc.
20115     1592       1426         725   Charter Communications 
 7018     1442       5895        1015   AT&T WorldNet Services
 6478     1308        296         501   AT&T Worldnet Services 
 2386     1263        683         905   AT&T Data Communications Serv
11492     1202        192          11   Cable One 
 3356     1189      10978         450   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
 8452     1232        188           7   TEDATA
 3292      450       1764         389   TDC Tele Danmark
30890      435         86         194   SC Kappa Invexim SRL
12479      409        578           6   Uni2 Autonomous System
 3320      343       7081         294   Deutsche Telekom AG
 3215      340       3025         108   France Telecom Transpac
 3301      340       1685         305   TeliaNet Sweden
 8866      337        109          22   Bulgarian Telecommunication C
29049      322         26           3   AzerSat LLC.
 8551      313        288          40   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     1445       2832         235   UniNet S.A. de C.V. 
10620      848        193         102   TVCABLE BOGOTA 
22047      607        302          14   VTR PUNTO NET S.A. 
16814      594         31          10   NSS, S.A. 
 7303      519        264          74   Telecom Argentina Stet-France
11830      519        294          42   Instituto Costarricense de El
 6471      443         96          31   ENTEL CHILE S.A. 
11172      411        102          72   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      385        526          25   NET Servicos de Comunicao 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      845         76          34   LINKdotNET AS number
20858      293         34           3   This AS will be used to conne
 3741      272        858         232   The Internet Solution 
 2018      242        215         142   Tertiary Education Network 
 6713      159        150          15   Itissalat Al-MAGHRIB
33783      148         10           8   EEPAD TISP TELECOM & INTERNET
29571      137         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
 5713      113        507          65   Telkom SA Ltd 
33776      109          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     4315       3669         346   bellsouth.net, inc. 
  209     2656       4151         623   Qwest 
 4323     1816       1049         376   Time Warner Telecom
 1785     1742        717         139   PaeTec Communications, Inc.
 4766     1687       6929         394   Korea Telecom (KIX)
20115     1592       1426         725   Charter Communications 
17488     1538        121          98   Hathway IP Over Cable Interne
 8151     1445       2832         235   UniNet S.A. de C.V. 
 7018     1442       5895        1015   AT&T WorldNet Services
 6478     1308        296         501   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      2656        2033      Qwest 
 1785      1742        1603      PaeTec Communications, Inc.
 4323      1816        1440      Time Warner Telecom
17488      1538        1440      Hathway IP Over Cable Interne
 4766      1687        1293      Korea Telecom (KIX)
 8452      1232        1225      TEDATA
 8151      1445        1210      UniNet S.A. de C.V. 
11492      1202        1191      Cable One 
18566      1061        1051      Covad Communications 
 4755      1179        1000      TATA Communications formerly 

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 
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
41.220.16.0/20        8668     TelOne Zimbabwe P/L
41.223.112.0/22       5713     Telkom SA Ltd 
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
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

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        /8:19       /9:10      /10:20      /11:56      /12:163     
/13:333     /14:590     /15:1147    /16:10411   /17:4658    /18:8021    
/19:17048   /20:20269   /21:19962   /22:25500   /23:25315   /24:148796  
/25:645     /26:792     /27:352     /28:119     /29:37      /30:9       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2805          4315      bellsouth.net, inc. 
 4766     1390          1687      Korea Telecom (KIX)
  209     1358          2656      Qwest 
17488     1305          1538      Hathway IP Over Cable Interne
 8452     1211          1232      TEDATA
11492     1155          1202      Cable One 
 1785     1150          1742      PaeTec Communications, Inc.
18566     1042          1061      Covad Communications 
 2386      965          1263      AT&T Data Communications Serv
 4323      942          1816      Time Warner Telecom

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

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

   4:13        8:177      12:2207     13:3        15:19       16:3      
  17:4        20:35       24:1100     32:51       38:547      40:96     
  41:1974     43:1        44:2        47:22       52:3        55:2      
  56:3        57:25       58:533      59:621      60:460      61:1109   
  62:1075     63:2032     64:3641     65:2412     66:3605     67:1494   
  68:696      69:2554     70:525      71:140      72:1653     73:2      
  74:1474     75:171      76:310      77:836      78:547      79:311    
  80:969      81:824      82:527      83:412      84:613      85:1020   
  86:397      87:633      88:355      89:1442     90:44       91:2113   
  92:339      93:1129     94:1222     95:822      96:106      97:184    
  98:245      99:17      109:1       110:36      112:92      113:92     
 114:223     115:223     116:1140    117:490     118:286     119:665    
 120:144     121:707     122:1010    123:537     124:954     125:1304   
 128:222     129:227     130:129     131:415     132:74      133:9      
 134:188     135:39      136:241     137:153     138:147     139:77     
 140:421     141:101     142:391     143:327     144:332     145:44     
 146:373     147:150     148:519     149:235     150:143     151:200    
 152:150     153:137     154:11      155:269     156:170     157:299    
 158:129     159:273     160:280     161:134     162:275     163:149    
 164:478     165:533     166:277     167:361     168:680     169:162    
 170:476     171:38      172:10      173:260     174:163     178:1      
 186:8       187:59      188:9       189:325     190:2734    192:5805   
 193:4227    194:3324    195:2661    196:1057    198:3735    199:3319   
 200:5488    201:1361    202:7851    203:8093    204:3792    205:2160   
 206:2384    207:2804    208:3900    209:3437    210:2641    211:1095   
 212:1528    213:1717    214:69      215:26      216:4539    217:1259   
 218:361     219:414     220:1206    221:451     222:280    

End of report




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