Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 7 13:13:01 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 08 Aug, 2009

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

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

BGP routing table entries examined:                              293130
    Prefixes after maximum aggregation:                          138725
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     145858
Total ASes present in the Internet Routing Table:                 31891
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           27728
Origin ASes announcing only one prefix:                           13529
Transit ASes present in the Internet Routing Table:                4163
Transit-only ASes present in the Internet Routing Table:             99
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:               465
    Unregistered ASNs in the Routing Table:                         127
Number of 32-bit ASNs allocated by the RIRs:                        231
Prefixes from 32-bit ASNs in the Routing Table:                      84
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            337
Number of addresses announced to Internet:                   2103732416
    Equivalent to 125 /8s, 100 /16s and 104 /24s
    Percentage of available address space announced:               56.8
    Percentage of allocated address space announced:               65.0
    Percentage of available address space allocated:               87.3
    Percentage of address space in use by end-sites:               78.5
Total number of prefixes smaller than registry allocations:      140470

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

Prefixes being announced by APNIC Region ASes:                    69643
    Total APNIC prefixes after maximum aggregation:               24862
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           69053
    Unique aggregates announced from the APNIC address blocks:    31672
APNIC Region origin ASes present in the Internet Routing Table:    3729
    APNIC Prefixes per ASN:                                       18.52
APNIC Region origin ASes announcing only one prefix:               1025
APNIC Region transit ASes present in the Internet Routing Table:    580
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              479781312
    Equivalent to 28 /8s, 152 /16s and 225 /24s
    Percentage of available APNIC address space announced:         84.1

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,
                       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:                    124787
    Total ARIN prefixes after maximum aggregation:                66281
    ARIN Deaggregation factor:                                     1.88
Prefixes being announced from the ARIN address blocks:           125453
    Unique aggregates announced from the ARIN address blocks:     52489
ARIN Region origin ASes present in the Internet Routing Table:    13145
    ARIN Prefixes per ASN:                                         9.54
ARIN Region origin ASes announcing only one prefix:                5068
ARIN Region transit ASes present in the Internet Routing Table:    1284
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1029397568
    Equivalent to 61 /8s, 91 /16s and 92 /24s
    Percentage of available ARIN address space announced:          90.2

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:                     67221
    Total RIPE prefixes after maximum aggregation:                39687
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            66828
    Unique aggregates announced from the RIPE address blocks:     45092
RIPE Region origin ASes present in the Internet Routing Table:    13361
    RIPE Prefixes per ASN:                                         5.00
RIPE Region origin ASes announcing only one prefix:                6984
RIPE Region transit ASes present in the Internet Routing Table:    1988
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               499404992
    Equivalent to 29 /8s, 196 /16s and 80 /24s
    Percentage of available RIPE address space announced:          99.2

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:                   24888
    Total LACNIC prefixes after maximum aggregation:               6115
    LACNIC Deaggregation factor:                                   4.07
Prefixes being announced from the LACNIC address blocks:          24849
    Unique aggregates announced from the LACNIC address blocks:   13809
LACNIC Region origin ASes present in the Internet Routing Table:   1153
    LACNIC Prefixes per ASN:                                      21.55
LACNIC Region origin ASes announcing only one prefix:               369
LACNIC Region transit ASes present in the Internet Routing Table:   195
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC addresses announced to Internet:              72975040
    Equivalent to 4 /8s, 89 /16s and 130 /24s
    Percentage of available LACNIC address space announced:        72.5

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:                   6194
    Total AfriNIC prefixes after maximum aggregation:              1493
    AfriNIC Deaggregation factor:                                  4.15
Prefixes being announced from the AfriNIC address blocks:          6597
    Unique aggregates announced from the AfriNIC address blocks:   2519
AfriNIC Region origin ASes present in the Internet Routing Table:   301
    AfriNIC Prefixes per ASN:                                     21.92
AfriNIC Region origin ASes announcing only one prefix:               83
AfriNIC Region transit ASes present in the Internet Routing Table:   62
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             20195584
    Equivalent to 1 /8s, 52 /16s and 41 /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     1719       6979         423   Korea Telecom (KIX)
17488     1550        139         102   Hathway IP Over Cable Interne
 4755     1231        292         143   TATA Communications formerly 
 9583     1119         88         550   Sify Limited
 4134      983      17997         384   CHINANET-BACKBONE
 7545      815        198         103   TPG Internet Pty Ltd
 9829      807        619          15   BSNL National Internet Backbo
23577      779         34         661   Korea Telecom (ATM-MPLS)
 4808      754       1515         172   CNCGROUP IP network: China169
18101      748        201          31   Reliance Infocom Ltd Internet

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     4209       3643         323   bellsouth.net, inc. 
 4323     1912       1048         384   Time Warner Telecom
 1785     1725        714         139   PaeTec Communications, Inc.
 7018     1498       5908        1051   AT&T WorldNet Services
20115     1464       1472         672   Charter Communications 
 6478     1329        274         284   AT&T Worldnet Services 
 2386     1289        673         939   AT&T Data Communications Serv
 3356     1206      10979         439   Level 3 Communications, LLC 
11492     1134        208          12   Cable One 
22773     1082       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      482         92         195   Evolva Telecom
12479      472        578           6   Uni2 Autonomous System
 3292      461       1905         395   TDC Tele Danmark
  702      430       1861         346   UUNET - Commercial IP service
35805      372         40           5   United Telecom of Georgia
 9198      366        138          12   Kazakhtelecom Data Network Ad
 3320      348       7067         301   Deutsche Telekom AG
 3301      347       1684         310   TeliaNet Sweden
 3215      344       3081         109   France Telecom Transpac
 8866      339        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     1515       2898         245   UniNet S.A. de C.V. 
10620      973        220          97   TVCABLE BOGOTA 
28573      636        579          40   NET Servicos de Comunicao S.A
 7303      617        328          93   Telecom Argentina Stet-France
22047      540        302          14   VTR PUNTO NET S.A. 
11830      487        310          65   Instituto Costarricense de El
11172      443         99          69   Servicios Alestra S.A de C.V 
 6471      421         96          31   ENTEL CHILE S.A. 
 7738      410        858          29   Telecomunicacoes da Bahia S.A
 3816      390        191          80   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     1025        188           7   TEDATA
24863      909         90          48   LINKdotNET AS number
20858      324         34           5   EgyNet
 3741      277        856         237   The Internet Solution 
 2018      246        215         143   Tertiary Education Network 
 6713      175        166          16   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      144         15           7   Ci Telecom Autonomous system 
24835      131         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     4209       3643         323   bellsouth.net, inc. 
 4323     1912       1048         384   Time Warner Telecom
 1785     1725        714         139   PaeTec Communications, Inc.
 4766     1719       6979         423   Korea Telecom (KIX)
17488     1550        139         102   Hathway IP Over Cable Interne
 8151     1515       2898         245   UniNet S.A. de C.V. 
 7018     1498       5908        1051   AT&T WorldNet Services
20115     1464       1472         672   Charter Communications 
 6478     1329        274         284   AT&T Worldnet Services 
 2386     1289        673         939   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      1725        1586      PaeTec Communications, Inc.
 4323      1912        1528      Time Warner Telecom
17488      1550        1448      Hathway IP Over Cable Interne
 4766      1719        1296      Korea Telecom (KIX)
 8151      1515        1270      UniNet S.A. de C.V. 
11492      1134        1122      Cable One 
 4755      1231        1088      TATA Communications formerly 
18566      1062        1052      Covad Communications 
 6478      1329        1045      AT&T Worldnet Services 
 8452      1025        1018      TEDATA

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
24.38.192.0/18       36377     PATRIOT MEDIA AND COMMUNICATI
24.225.128.0/17      36377     PATRIOT MEDIA AND COMMUNICATI
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 
63.131.240.0/20      40414     Optivon, Inc. 

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      /11:59      /12:170     
/13:350     /14:622     /15:1176    /16:10603   /17:4765    /18:8353    
/19:17223   /20:20578   /21:20493   /22:26414   /23:26134   /24:153445  
/25:909     /26:1022    /27:577     /28:159     /29:8       /30:7       
/31:1       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2733          4209      bellsouth.net, inc. 
 4766     1404          1719      Korea Telecom (KIX)
17488     1296          1550      Hathway IP Over Cable Interne
 1785     1194          1725      PaeTec Communications, Inc.
11492     1060          1134      Cable One 
18566     1043          1062      Covad Communications 
 9583      972          1119      Sify Limited
 4323      968          1912      Time Warner Telecom
 8452      947          1025      TEDATA
10620      881           973      TVCABLE BOGOTA 

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

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

   4:14        8:212      12:2135     13:7        15:19       16:3      
  17:5        20:35       24:1123     32:52       34:2        38:585    
  40:96       41:1748     43:1        44:2        47:22       52:6      
  53:2        55:2        56:2        57:24       58:602      59:607    
  60:463      61:951      62:1110     63:2027     64:3699     65:2403   
  66:3591     67:1696     68:859      69:2722     70:552      71:152    
  72:1650     73:2        74:1670     75:176      76:350      77:825    
  78:568      79:359      80:931      81:849      82:588      83:453    
  84:642      85:1064     86:372      87:677      88:376      89:1478   
  90:49       91:2452     92:390      93:1103     94:1180     95:1133   
  96:166      97:257      98:272      99:28      110:174     111:374    
 112:124     113:151     114:238     115:286     116:1128    117:559    
 118:337     119:757     120:148     121:638     122:1233    123:680    
 124:982     125:1379    128:225     129:223     130:129     131:414    
 132:74      133:13      134:185     135:43      136:226     137:164    
 138:167     139:82      140:441     141:123     142:384     143:357    
 144:359     145:48      146:388     147:153     148:530     149:225    
 150:206     151:193     152:139     153:148     154:2       155:275    
 156:167     157:301     158:114     159:343     160:290     161:162    
 162:272     163:162     164:465     165:520     166:466     167:363    
 168:700     169:176     170:481     171:41      172:10      173:351    
 174:274     178:1       180:4       186:115     187:163     188:395    
 189:576     190:2963    192:5790    193:4257    194:3290    195:2690   
 196:1120    198:3649    199:3367    200:5099    201:1296    202:7750   
 203:8263    204:3886    205:2159    206:2446    207:2742    208:3903   
 209:3519    210:2531    211:1106    212:1655    213:1621    214:82     
 215:29      216:4530    217:1366    218:405     219:410     220:1107   
 221:479     222:328    

End of report




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