Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 24 13:12:17 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 25 Jul, 2009

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

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

BGP routing table entries examined:                              292250
    Prefixes after maximum aggregation:                          138369
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     145253
Total ASes present in the Internet Routing Table:                 31825
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           27671
Origin ASes announcing only one prefix:                           13487
Transit ASes present in the Internet Routing Table:                4154
Transit-only ASes present in the Internet Routing Table:            101
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      39
    Max AS path prepend of ASN (22394)                               36
Prefixes from unregistered ASNs in the Routing Table:               434
    Unregistered ASNs in the Routing Table:                         127
Number of 32-bit ASNs allocated by the RIRs:                        213
Prefixes from 32-bit ASNs in the Routing Table:                      76
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            342
Number of addresses announced to Internet:                   2061480576
    Equivalent to 122 /8s, 223 /16s and 178 /24s
    Percentage of available address space announced:               55.6
    Percentage of allocated address space announced:               64.4
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               78.4
Total number of prefixes smaller than registry allocations:      144712

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

Prefixes being announced by APNIC Region ASes:                    69858
    Total APNIC prefixes after maximum aggregation:               24855
    APNIC Deaggregation factor:                                    2.81
Prefixes being announced from the APNIC address blocks:           69293
    Unique aggregates announced from the APNIC address blocks:    31631
APNIC Region origin ASes present in the Internet Routing Table:    3715
    APNIC Prefixes per ASN:                                       18.65
APNIC Region origin ASes announcing only one prefix:               1012
APNIC Region transit ASes present in the Internet Routing Table:    576
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              473972672
    Equivalent to 28 /8s, 64 /16s and 63 /24s
    Percentage of available APNIC address space announced:         88.3

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,
                       180/8, 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:                    124246
    Total ARIN prefixes after maximum aggregation:                66104
    ARIN Deaggregation factor:                                     1.88
Prefixes being announced from the ARIN address blocks:           124900
    Unique aggregates announced from the ARIN address blocks:     52323
ARIN Region origin ASes present in the Internet Routing Table:    13128
    ARIN Prefixes per ASN:                                         9.51
ARIN Region origin ASes announcing only one prefix:                5058
ARIN Region transit ASes present in the Internet Routing Table:    1289
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          39
Number of ARIN addresses announced to Internet:               995143360
    Equivalent to 59 /8s, 80 /16s and 174 /24s
    Percentage of available ARIN address space announced:         191.3

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
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:                     66929
    Total RIPE prefixes after maximum aggregation:                39578
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            66512
    Unique aggregates announced from the RIPE address blocks:     44870
RIPE Region origin ASes present in the Internet Routing Table:    13327
    RIPE Prefixes per ASN:                                         4.99
RIPE Region origin ASes announcing only one prefix:                6965
RIPE Region transit ASes present in the Internet Routing Table:    1987
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               497559744
    Equivalent to 29 /8s, 168 /16s and 40 /24s
    Percentage of available RIPE address space announced:          98.9

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     25/8,  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:                   24706
    Total LACNIC prefixes after maximum aggregation:               6074
    LACNIC Deaggregation factor:                                   4.07
Prefixes being announced from the LACNIC address blocks:          24652
    Unique aggregates announced from the LACNIC address blocks:   13642
LACNIC Region origin ASes present in the Internet Routing Table:   1146
    LACNIC Prefixes per ASN:                                      21.51
LACNIC Region origin ASes announcing only one prefix:               365
LACNIC Region transit ASes present in the Internet Routing Table:   192
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              72665344
    Equivalent to 4 /8s, 84 /16s and 201 /24s
    Percentage of available LACNIC address space announced:        72.2

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:                   6131
    Total AfriNIC prefixes after maximum aggregation:              1475
    AfriNIC Deaggregation factor:                                  4.16
Prefixes being announced from the AfriNIC address blocks:          6538
    Unique aggregates announced from the AfriNIC address blocks:   2506
AfriNIC Region origin ASes present in the Internet Routing Table:   302
    AfriNIC Prefixes per ASN:                                     21.65
AfriNIC Region origin ASes announcing only one prefix:               87
AfriNIC Region transit ASes present in the Internet Routing Table:   64
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             20171264
    Equivalent to 1 /8s, 51 /16s and 202 /24s
    Percentage of available AfriNIC address space announced:       60.1

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     1704       6934         409   Korea Telecom (KIX)
17488     1543        137         103   Hathway IP Over Cable Interne
 4755     1221        292         145   TATA Communications formerly 
 9583     1111         86         548   Sify Limited
 4134      972      17321         375   CHINANET-BACKBONE
 7545      812        198         101   TPG Internet Pty Ltd
23577      786         34         667   Korea Telecom (ATM-MPLS)
 9829      782        611          14   BSNL National Internet Backbo
18101      750        201          32   Reliance Infocom Ltd Internet
24560      731        247         170   Bharti Airtel Ltd., Telemedia

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     4241       3643         324   bellsouth.net, inc. 
 4323     1899       1050         386   Time Warner Telecom
 1785     1713        714         139   PaeTec Communications, Inc.
 7018     1511       5907        1047   AT&T WorldNet Services
20115     1423       1461         678   Charter Communications 
 2386     1272        670         924   AT&T Data Communications Serv
 6478     1242        275         315   AT&T Worldnet Services 
 3356     1190      10960         441   Level 3 Communications, LLC 
11492     1128        208          12   Cable One 
22773     1077       2604          66   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      481         91         195   Evolva Telecom
12479      475        578           6   Uni2 Autonomous System
 3292      459       1903         394   TDC Tele Danmark
  702      430       1861         346   UUNET - Commercial IP service
 9198      360        138          12   Kazakhtelecom Data Network Ad
 3320      352       7082         305   Deutsche Telekom AG
 3301      349       1684         311   TeliaNet Sweden
 3215      343       3065         108   France Telecom Transpac
 8866      333        109          20   Bulgarian Telecommunication C
 8551      306        290          38   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     1489       2888         241   UniNet S.A. de C.V. 
10620      938        218         114   TVCABLE BOGOTA 
28573      651        581          36   NET Servicos de Comunicao S.A
 7303      596        316          92   Telecom Argentina Stet-France
22047      543        302          14   VTR PUNTO NET S.A. 
11830      488        309          56   Instituto Costarricense de El
11172      443         99          69   Servicios Alestra S.A de C.V 
 6471      434         96          31   ENTEL CHILE S.A. 
 7738      410        858          29   Telecomunicacoes da Bahia S.A
 3816      382        188          78   Empresa Nacional de Telecomun

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     1026        188           7   TEDATA
24863      903         90          48   LINKdotNET AS number
20858      323         34           5   EgyNet
 3741      277        856         237   The Internet Solution 
 2018      244        215         143   Tertiary Education Network 
 6713      175        166          16   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      139         15           8   Ci Telecom Autonomous system 
24835      129         46           9   RAYA Telecom - Egypt
 5536      123          8           9   Internet Egypt Network

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     4241       3643         324   bellsouth.net, inc. 
 4323     1899       1050         386   Time Warner Telecom
 1785     1713        714         139   PaeTec Communications, Inc.
 4766     1704       6934         409   Korea Telecom (KIX)
17488     1543        137         103   Hathway IP Over Cable Interne
 7018     1511       5907        1047   AT&T WorldNet Services
 8151     1489       2888         241   UniNet S.A. de C.V. 
20115     1423       1461         678   Charter Communications 
 2386     1272        670         924   AT&T Data Communications Serv
 6478     1242        275         315   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
 1785      1713        1574      PaeTec Communications, Inc.
 4323      1899        1513      Time Warner Telecom
17488      1543        1440      Hathway IP Over Cable Interne
 4766      1704        1295      Korea Telecom (KIX)
 8151      1489        1248      UniNet S.A. de C.V. 
11492      1128        1116      Cable One 
 4755      1221        1076      TATA Communications formerly 
18566      1062        1052      Covad Communications 
 8452      1026        1019      TEDATA
22773      1077        1011      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
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.112.0/22       5713     Telkom SA Ltd 
41.223.176.0/22      36981     >>UNKNOWN<<
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
63.143.251.0/24      22555     Universal Talkware Corporatio
64.31.32.0/19        11955     ServiceCo LLC - Road Runner 

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       /9:10      /10:24      /11:58      /12:169     
/13:350     /14:613     /15:1170    /16:10543   /17:4767    /18:8242    
/19:17172   /20:20526   /21:20395   /22:26268   /23:26180   /24:153024  
/25:933     /26:1035    /27:570     /28:159     /29:8       /30:7       
/31:1       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2752          4241      bellsouth.net, inc. 
 4766     1402          1704      Korea Telecom (KIX)
17488     1290          1543      Hathway IP Over Cable Interne
 1785     1183          1713      PaeTec Communications, Inc.
11492     1054          1128      Cable One 
18566     1043          1062      Covad Communications 
 2386      989          1272      AT&T Data Communications Serv
 9583      964          1111      Sify Limited
 4323      963          1899      Time Warner Telecom
 8452      948          1026      TEDATA

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

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

   4:14        8:209      12:2145     13:7        15:19       16:3      
  17:5        20:36       24:1100     32:52       34:2        38:577    
  40:98       41:1749     43:1        44:2        47:22       52:6      
  55:2        56:2        57:24       58:596      59:649      60:461    
  61:1078     62:1106     63:2037     64:3711     65:2401     66:3582   
  67:1663     68:861      69:2640     70:552      71:154      72:1651   
  73:2        74:1636     75:175      76:348      77:849      78:580    
  79:359      80:974      81:840      82:585      83:451      84:624    
  85:1060     86:369      87:678      88:363      89:1468     90:50     
  91:2415     92:377      93:1069     94:1068     95:1122     96:155    
  97:225      98:250      99:27      110:176     111:348     112:113    
 113:144     114:254     115:330     116:1123    117:534     118:355    
 119:734     120:147     121:783     122:1059    123:704     124:974    
 125:1374    128:225     129:232     130:128     131:414     132:74     
 133:9       134:186     135:40      136:225     137:165     138:167    
 139:81      140:449     141:121     142:383     143:354     144:359    
 145:48      146:387     147:155     148:517     149:223     150:175    
 151:193     152:145     153:147     154:2       155:275     156:167    
 157:301     158:118     159:342     160:289     161:156     162:274    
 163:164     164:475     165:520     166:467     167:361     168:708    
 169:171     170:479     171:41      172:10      173:315     174:258    
 178:1       186:107     187:146     188:354     189:537     190:2914   
 192:5783    193:4270    194:3313    195:2692    196:1123    198:3647   
 199:3369    200:5140    201:1282    202:7716    203:8324    204:3903   
 205:2159    206:2447    207:2746    208:3895    209:3436    210:2539   
 211:1123    212:1666    213:1631    214:82      215:29      216:4540   
 217:1365    218:402     219:451     220:1107    221:475     222:327    


End of report




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