Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 14 13:12:39 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 15 Aug, 2009

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

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

BGP routing table entries examined:                              293045
    Prefixes after maximum aggregation:                          138797
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     145789
Total ASes present in the Internet Routing Table:                 31941
    Prefixes per ASN:                                              9.17
Origin-only ASes present in the Internet Routing Table:           27758
Origin ASes announcing only one prefix:                           13556
Transit ASes present in the Internet Routing Table:                4183
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:               464
    Unregistered ASNs in the Routing Table:                         128
Number of 32-bit ASNs allocated by the RIRs:                        236
Prefixes from 32-bit ASNs in the Routing Table:                      87
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            305
Number of addresses announced to Internet:                   2088201152
    Equivalent to 124 /8s, 119 /16s and 107 /24s
    Percentage of available address space announced:               56.3
    Percentage of allocated address space announced:               64.5
    Percentage of available address space allocated:               87.3
    Percentage of address space in use by end-sites:               78.6
Total number of prefixes smaller than registry allocations:      140112

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

Prefixes being announced by APNIC Region ASes:                    70029
    Total APNIC prefixes after maximum aggregation:               24871
    APNIC Deaggregation factor:                                    2.82
Prefixes being announced from the APNIC address blocks:           69452
    Unique aggregates announced from the APNIC address blocks:    31678
APNIC Region origin ASes present in the Internet Routing Table:    3730
    APNIC Prefixes per ASN:                                       18.62
APNIC Region origin ASes announcing only one prefix:               1022
APNIC Region transit ASes present in the Internet Routing Table:    579
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              480080320
    Equivalent to 28 /8s, 157 /16s and 113 /24s
    Percentage of available APNIC address space announced:         84.2

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:                    124187
    Total ARIN prefixes after maximum aggregation:                66255
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:           124834
    Unique aggregates announced from the ARIN address blocks:     52347
ARIN Region origin ASes present in the Internet Routing Table:    13166
    ARIN Prefixes per ASN:                                         9.48
ARIN Region origin ASes announcing only one prefix:                5084
ARIN Region transit ASes present in the Internet Routing Table:    1297
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1012753984
    Equivalent to 60 /8s, 93 /16s and 102 /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:                     67351
    Total RIPE prefixes after maximum aggregation:                39758
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            66989
    Unique aggregates announced from the RIPE address blocks:     45267
RIPE Region origin ASes present in the Internet Routing Table:    13386
    RIPE Prefixes per ASN:                                         5.00
RIPE Region origin ASes announcing only one prefix:                6995
RIPE Region transit ASes present in the Internet Routing Table:    1999
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               499938496
    Equivalent to 29 /8s, 204 /16s and 116 /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:                   24891
    Total LACNIC prefixes after maximum aggregation:               6126
    LACNIC Deaggregation factor:                                   4.06
Prefixes being announced from the LACNIC address blocks:          24847
    Unique aggregates announced from the LACNIC address blocks:   13861
LACNIC Region origin ASes present in the Internet Routing Table:   1150
    LACNIC Prefixes per ASN:                                      21.61
LACNIC Region origin ASes announcing only one prefix:               368
LACNIC Region transit ASes present in the Internet Routing Table:   193
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC addresses announced to Internet:              73116096
    Equivalent to 4 /8s, 91 /16s and 169 /24s
    Percentage of available LACNIC address space announced:        72.6

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:                   6184
    Total AfriNIC prefixes after maximum aggregation:              1496
    AfriNIC Deaggregation factor:                                  4.13
Prefixes being announced from the AfriNIC address blocks:          6605
    Unique aggregates announced from the AfriNIC address blocks:   2388
AfriNIC Region origin ASes present in the Internet Routing Table:   307
    AfriNIC Prefixes per ASN:                                     21.51
AfriNIC Region origin ASes announcing only one prefix:               87
AfriNIC Region transit ASes present in the Internet Routing Table:   65
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       17
Number of AfriNIC addresses announced to Internet:             20439552
    Equivalent to 1 /8s, 55 /16s and 226 /24s
    Percentage of available AfriNIC address space announced:       60.9

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     1723       6980         424   Korea Telecom (KIX)
17488     1549        139         102   Hathway IP Over Cable Interne
 4755     1229        292         141   TATA Communications formerly 
 9583     1099         87         543   Sify Limited
 4134      995      18007         387   CHINANET-BACKBONE
18101      964        202          32   Reliance Infocom Ltd Internet
 7545      816        198         103   TPG Internet Pty Ltd
 9829      807        620          16   BSNL National Internet Backbo
23577      785         34         665   Korea Telecom (ATM-MPLS)
 4808      761       1517         175   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     4205       3642         322   bellsouth.net, inc. 
 4323     1918       1048         386   Time Warner Telecom
 1785     1727        714         138   PaeTec Communications, Inc.
 7018     1489       5906        1049   AT&T WorldNet Services
20115     1466       1472         672   Charter Communications 
 6478     1363        279         256   AT&T Worldnet Services 
 2386     1287        673         937   AT&T Data Communications Serv
 3356     1204      10979         435   Level 3 Communications, LLC 
11492     1132        208          12   Cable One 
22773     1086       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      483         92         196   Evolva Telecom
12479      472        578           6   Uni2 Autonomous System
 3292      463       1905         397   TDC Tele Danmark
  702      430       1861         346   UUNET - Commercial IP service
35805      379         40           5   United Telecom of Georgia
 9198      370        138          12   Kazakhtelecom Data Network Ad
 3301      348       1684         311   TeliaNet Sweden
 3320      345       7067         299   Deutsche Telekom AG
 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     1518       2898         244   UniNet S.A. de C.V. 
10620      990        220          93   TVCABLE BOGOTA 
 7303      624        331          95   Telecom Argentina Stet-France
28573      614        579          34   NET Servicos de Comunicao S.A
22047      541        302          14   VTR PUNTO NET S.A. 
11830      487        310          65   Instituto Costarricense de El
11172      442         99          70   Servicios Alestra S.A de C.V 
 6471      421         96          31   ENTEL CHILE S.A. 
 7738      414        858          29   Telecomunicacoes da Bahia S.A
 3816      398        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     1027        188           7   TEDATA
24863      922        144          29   LINKdotNET AS number
20858      325         34           6   EgyNet
 3741      276        856         236   The Internet Solution 
 2018      200        180         142   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      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     4205       3642         322   bellsouth.net, inc. 
 4323     1918       1048         386   Time Warner Telecom
 1785     1727        714         138   PaeTec Communications, Inc.
 4766     1723       6980         424   Korea Telecom (KIX)
17488     1549        139         102   Hathway IP Over Cable Interne
 8151     1518       2898         244   UniNet S.A. de C.V. 
 7018     1489       5906        1049   AT&T WorldNet Services
20115     1466       1472         672   Charter Communications 
 6478     1363        279         256   AT&T Worldnet Services 
 2386     1287        673         937   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      1727        1589      PaeTec Communications, Inc.
 4323      1918        1532      Time Warner Telecom
17488      1549        1447      Hathway IP Over Cable Interne
 4766      1723        1299      Korea Telecom (KIX)
 8151      1518        1274      UniNet S.A. de C.V. 
11492      1132        1120      Cable One 
 6478      1363        1107      AT&T Worldnet Services 
 4755      1229        1088      TATA Communications formerly 
18566      1062        1052      Covad Communications 
22773      1086        1020      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<<
41.223.112.0/22       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

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      /10:24      /11:59      /12:170     
/13:350     /14:624     /15:1174    /16:10618   /17:4792    /18:8358    
/19:17269   /20:20635   /21:20542   /22:26526   /23:26231   /24:152910  
/25:921     /26:1032    /27:597     /28:160     /29:8       /30:7       
/31:1       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2728          4205      bellsouth.net, inc. 
 4766     1410          1723      Korea Telecom (KIX)
17488     1295          1549      Hathway IP Over Cable Interne
 1785     1197          1727      PaeTec Communications, Inc.
11492     1058          1132      Cable One 
18566     1043          1062      Covad Communications 
 4323      970          1918      Time Warner Telecom
 9583      952          1099      Sify Limited
 8452      948          1027      TEDATA
10620      896           990      TVCABLE BOGOTA 

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

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

   4:14        8:213      12:2136     13:7        15:20       16:3      
  17:5        20:35       24:1124     32:51       34:2        38:589    
  40:97       41:1768     43:1        44:2        47:13       52:6      
  55:2        56:2        57:24       58:620      59:608      60:462    
  61:974      62:1105     63:2011     64:3544     65:2405     66:3413   
  67:1704     68:865      69:2748     70:557      71:152      72:1656   
  73:2        74:1683     75:178      76:338      77:843      78:566    
  79:375      80:936      81:853      82:589      83:451      84:638    
  85:1070     86:376      87:676      88:370      89:1478     90:48     
  91:2467     92:389      93:1100     94:1183     95:1133     96:166    
  97:260      98:268      99:28      110:177     111:371     112:127    
 113:150     114:230     115:290     116:1133    117:558     118:337    
 119:768     120:151     121:648     122:1243    123:751     124:1032   
 125:1343    128:225     129:221     130:128     131:414     132:75     
 133:9       134:185     135:43      136:225     137:160     138:167    
 139:80      140:443     141:124     142:384     143:371     144:375    
 145:49      146:389     147:153     148:527     149:224     150:207    
 151:192     152:209     153:148     154:2       155:274     156:167    
 157:301     158:115     159:343     160:290     161:164     162:273    
 163:163     164:275     165:521     166:465     167:363     168:699    
 169:178     170:476     171:41      172:10      173:363     174:280    
 178:1       180:5       186:120     187:159     188:409     189:584    
 190:2913    192:5781    193:4257    194:3290    195:2699    196:1105   
 198:3646    199:3370    200:5103    201:1316    202:7728    203:8288   
 204:3887    205:2164    206:2446    207:2738    208:3910    209:3421   
 210:2521    211:1100    212:1627    213:1619    214:92      215:29     
 216:4319    217:1363    218:407     219:411     220:1092    221:462    
 222:327    

End of report




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