Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 28 13:12:49 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 29 Aug, 2009

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

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

BGP routing table entries examined:                              294090
    Prefixes after maximum aggregation:                          139250
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     146854
Total ASes present in the Internet Routing Table:                 32061
    Prefixes per ASN:                                              9.17
Origin-only ASes present in the Internet Routing Table:           27872
Origin ASes announcing only one prefix:                           13619
Transit ASes present in the Internet Routing Table:                4189
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:                                      24
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               396
    Unregistered ASNs in the Routing Table:                         114
Number of 32-bit ASNs allocated by the RIRs:                        251
Prefixes from 32-bit ASNs in the Routing Table:                      97
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            327
Number of addresses announced to Internet:                   2101238976
    Equivalent to 125 /8s, 62 /16s and 92 /24s
    Percentage of available address space announced:               56.7
    Percentage of allocated address space announced:               64.9
    Percentage of available address space allocated:               87.3
    Percentage of address space in use by end-sites:               78.7
Total number of prefixes smaller than registry allocations:      140768

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

Prefixes being announced by APNIC Region ASes:                    70329
    Total APNIC prefixes after maximum aggregation:               24979
    APNIC Deaggregation factor:                                    2.82
Prefixes being announced from the APNIC address blocks:           69774
    Unique aggregates announced from the APNIC address blocks:    31721
APNIC Region origin ASes present in the Internet Routing Table:    3759
    APNIC Prefixes per ASN:                                       18.56
APNIC Region origin ASes announcing only one prefix:               1032
APNIC Region transit ASes present in the Internet Routing Table:    575
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              492656320
    Equivalent to 29 /8s, 93 /16s and 86 /24s
    Percentage of available APNIC address space announced:         83.9

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
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:                    124611
    Total ARIN prefixes after maximum aggregation:                66436
    ARIN Deaggregation factor:                                     1.88
Prefixes being announced from the ARIN address blocks:           125177
    Unique aggregates announced from the ARIN address blocks:     52596
ARIN Region origin ASes present in the Internet Routing Table:    13189
    ARIN Prefixes per ASN:                                         9.49
ARIN Region origin ASes announcing only one prefix:                5096
ARIN Region transit ASes present in the Internet Routing Table:    1301
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1013478976
    Equivalent to 60 /8s, 104 /16s and 118 /24s
    Percentage of available ARIN address space announced:          88.8

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      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:                     67574
    Total RIPE prefixes after maximum aggregation:                39857
    RIPE Deaggregation factor:                                     1.70
Prefixes being announced from the RIPE address blocks:            67192
    Unique aggregates announced from the RIPE address blocks:     45585
RIPE Region origin ASes present in the Internet Routing Table:    13438
    RIPE Prefixes per ASN:                                         5.00
RIPE Region origin ASes announcing only one prefix:                7031
RIPE Region transit ASes present in the Internet Routing Table:    2013
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               499997888
    Equivalent to 29 /8s, 205 /16s and 92 /24s
    Percentage of available RIPE address space announced:          99.3

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:                   25032
    Total LACNIC prefixes after maximum aggregation:               6186
    LACNIC Deaggregation factor:                                   4.05
Prefixes being announced from the LACNIC address blocks:          25006
    Unique aggregates announced from the LACNIC address blocks:   14048
LACNIC Region origin ASes present in the Internet Routing Table:   1170
    LACNIC Prefixes per ASN:                                      21.37
LACNIC Region origin ASes announcing only one prefix:               375
LACNIC Region transit ASes present in the Internet Routing Table:   190
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC addresses announced to Internet:              73430272
    Equivalent to 4 /8s, 96 /16s and 117 /24s
    Percentage of available LACNIC address space announced:        72.9

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:                   6214
    Total AfriNIC prefixes after maximum aggregation:              1551
    AfriNIC Deaggregation factor:                                  4.01
Prefixes being announced from the AfriNIC address blocks:          6614
    Unique aggregates announced from the AfriNIC address blocks:   2643
AfriNIC Region origin ASes present in the Internet Routing Table:   310
    AfriNIC Prefixes per ASN:                                     21.34
AfriNIC Region origin ASes announcing only one prefix:               85
AfriNIC Region transit ASes present in the Internet Routing Table:   66
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             20196096
    Equivalent to 1 /8s, 52 /16s and 43 /24s
    Percentage of available AfriNIC address space announced:       60.2

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     1718       6981         425   Korea Telecom (KIX)
17488     1548        139         102   Hathway IP Over Cable Interne
 4755     1228        292         140   TATA Communications formerly 
 9583     1092         86         531   Sify Limited
 4134      999      18167         389   CHINANET-BACKBONE
18101      949        202          32   Reliance Infocom Ltd Internet
 7545      821        198          99   TPG Internet Pty Ltd
 9829      807        620          16   BSNL National Internet Backbo
23577      784         34         665   Korea Telecom (ATM-MPLS)
 4808      762       1530         180   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     4181       3610         313   bellsouth.net, inc. 
 4323     1919       1049         390   Time Warner Telecom
 1785     1733        714         138   PaeTec Communications, Inc.
 7018     1488       5875        1049   AT&T WorldNet Services
20115     1474       1475         675   Charter Communications 
 6478     1385        280         271   AT&T Worldnet Services 
 2386     1296        657         941   AT&T Data Communications Serv
 3356     1216      10980         441   Level 3 Communications, LLC 
11492     1112        208          12   Cable One 
22773     1090       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      485         92         195   Evolva Telecom
12479      476        578           6   Uni2 Autonomous System
 3292      457       1905         394   TDC Tele Danmark
  702      427       1837         344   UUNET - Commercial IP service
35805      381         40           5   United Telecom of Georgia
 9198      367        138          12   Kazakhtelecom Data Network Ad
 3320      352       7067         303   Deutsche Telekom AG
 3301      345       1412         309   TeliaNet Sweden
 3215      344       3081         109   France Telecom Transpac
 8866      340        109          20   Bulgarian Telecommunication C

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     1474       2898         241   UniNet S.A. de C.V. 
10620      990        223         101   TVCABLE BOGOTA 
28573      669        603          60   NET Servicos de Comunicao S.A
 7303      632        334          97   Telecom Argentina Stet-France
22047      542        302          14   VTR PUNTO NET S.A. 
11830      475        310          65   Instituto Costarricense de El
11172      443         99          70   Servicios Alestra S.A de C.V 
 6471      421         96          31   ENTEL CHILE S.A. 
 7738      416        858          29   Telecomunicacoes da Bahia S.A
 3816      395        191          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     1002        188           7   TEDATA
24863      920         92          52   LINKdotNET AS number
20858      320         34           6   EgyNet
 3741      274        856         235   The Internet Solution 
 2018      201        180         142   Tertiary Education Network 
 6713      175        166          16   Itissalat Al-MAGHRIB
29571      143         14           6   Ci Telecom Autonomous system 
33783      131         10          17   EEPAD TISP TELECOM & INTERNET
24835      130         46           9   RAYA Telecom - Egypt
 5536      122          8          13   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     4181       3610         313   bellsouth.net, inc. 
 4323     1919       1049         390   Time Warner Telecom
 1785     1733        714         138   PaeTec Communications, Inc.
 4766     1718       6981         425   Korea Telecom (KIX)
17488     1548        139         102   Hathway IP Over Cable Interne
 7018     1488       5875        1049   AT&T WorldNet Services
 8151     1474       2898         241   UniNet S.A. de C.V. 
20115     1474       1475         675   Charter Communications 
 6478     1385        280         271   AT&T Worldnet Services 
 2386     1296        657         941   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
 1785      1733        1595      PaeTec Communications, Inc.
 4323      1919        1529      Time Warner Telecom
17488      1548        1446      Hathway IP Over Cable Interne
 4766      1718        1293      Korea Telecom (KIX)
 8151      1474        1233      UniNet S.A. de C.V. 
 6478      1385        1114      AT&T Worldnet Services 
11492      1112        1100      Cable One 
 4755      1228        1088      TATA Communications formerly 
18566      1062        1052      Covad Communications 
22773      1090        1024      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
24.225.128.0/17      36377     PATRIOT MEDIA AND COMMUNICATI
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.176.0/22      36981     >>UNKNOWN<<
41.223.189.0/24      26452     Local Communications Networks
43.245.0.0/16         7502     Internetwork Kyoto
43.245.96.0/20        7502     Internetwork Kyoto
43.245.112.0/20       7502     Internetwork Kyoto
43.245.192.0/20       7502     Internetwork Kyoto
43.245.208.0/20       7502     Internetwork Kyoto
43.245.224.0/20       7502     Internetwork Kyoto

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      /10:25      /11:62      /12:168     
/13:351     /14:624     /15:1178    /16:10639   /17:4812    /18:8366    
/19:17327   /20:20674   /21:20700   /22:26669   /23:26392   /24:153358  
/25:921     /26:1041    /27:580     /28:150     /29:8       /30:7       
/31:1       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2709          4181      bellsouth.net, inc. 
 4766     1405          1718      Korea Telecom (KIX)
17488     1294          1548      Hathway IP Over Cable Interne
 1785     1204          1733      PaeTec Communications, Inc.
18566     1043          1062      Covad Communications 
11492     1039          1112      Cable One 
 4323      965          1919      Time Warner Telecom
 9583      944          1092      Sify Limited
 8452      926          1002      TEDATA
10620      897           990      TVCABLE BOGOTA 

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

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

   4:14        8:214      12:2132     13:7        15:21       16:3      
  17:5        20:35       24:1124     32:52       34:2        38:595    
  40:97       41:1754     43:1        44:2        47:8        52:6      
  55:2        56:2        57:25       58:624      59:610      60:460    
  61:972      62:1102     63:2012     64:3658     65:2400     66:3425   
  67:1742     68:882      69:2763     70:556      71:162      72:1664   
  73:2        74:1733     75:179      76:317      77:858      78:559    
  79:375      80:923      81:833      82:602      83:427      84:630    
  85:1065     86:377      87:670      88:371      89:1463     90:49     
  91:2504     92:399      93:1118     94:1183     95:1082     96:166    
  97:267      98:276      99:30      110:180     111:386     112:124    
 113:149     114:240     115:301     116:1132    117:566     118:342    
 119:768     120:121     121:650     122:1248    123:755     124:1059   
 125:1345    128:223     129:219     130:129     131:417     132:75     
 133:9       134:174     135:42      136:225     137:160     138:169    
 139:85      140:445     141:124     142:385     143:341     144:389    
 145:49      146:387     147:156     148:530     149:220     150:207    
 151:192     152:208     153:152     154:2       155:274     156:167    
 157:301     158:113     159:350     160:291     161:164     162:270    
 163:164     164:276     165:524     166:471     167:362     168:701    
 169:162     170:479     171:41      172:2       173:393     174:322    
 175:1       178:1       180:8       182:1       186:127     187:152    
 188:590     189:588     190:2877    192:5783    193:4248    194:3275   
 195:2706    196:1125    198:3551    199:3360    200:5130    201:1302   
 202:7764    203:8273    204:3903    205:2191    206:2384    207:2743   
 208:3939    209:3409    210:2518    211:1106    212:1606    213:1654   
 214:131     215:29      216:4310    217:1352    218:408     219:422    
 220:1107    221:463     222:323    

End of report




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