Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 1 12:29:31 CST 2010


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 02 Jan, 2010

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

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

BGP routing table entries examined:                              307533
    Prefixes after maximum aggregation:                          143181
    Deaggregation factor:                                          2.15
    Unique aggregates announced to Internet:                     151348
Total ASes present in the Internet Routing Table:                 33011
    Prefixes per ASN:                                              9.32
Origin-only ASes present in the Internet Routing Table:           28654
Origin ASes announcing only one prefix:                           14007
Transit ASes present in the Internet Routing Table:                4357
Transit-only ASes present in the Internet Routing Table:            103
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:               715
    Unregistered ASNs in the Routing Table:                         132
Number of 32-bit ASNs allocated by the RIRs:                        383
Prefixes from 32-bit ASNs in the Routing Table:                     339
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            162
Number of addresses announced to Internet:                   2167751936
    Equivalent to 129 /8s, 53 /16s and 69 /24s
    Percentage of available address space announced:               58.5
    Percentage of allocated address space announced:               66.3
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.5
Total number of prefixes smaller than registry allocations:      148125

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

Prefixes being announced by APNIC Region ASes:                    74089
    Total APNIC prefixes after maximum aggregation:               25790
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           70774
    Unique aggregates announced from the APNIC address blocks:    31309
APNIC Region origin ASes present in the Internet Routing Table:    3905
    APNIC Prefixes per ASN:                                       18.12
APNIC Region origin ASes announcing only one prefix:               1068
APNIC Region transit ASes present in the Internet Routing Table:    607
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         22
Number of APNIC addresses announced to Internet:              486372128
    Equivalent to 28 /8s, 253 /16s and 115 /24s
    Percentage of available APNIC address space announced:         80.5

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
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, 133/8, 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:                    129256
    Total ARIN prefixes after maximum aggregation:                67488
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:           103378
    Unique aggregates announced from the ARIN address blocks:     39110
ARIN Region origin ASes present in the Internet Routing Table:    13433
    ARIN Prefixes per ASN:                                         7.70
ARIN Region origin ASes announcing only one prefix:                5203
ARIN Region transit ASes present in the Internet Routing Table:    1329
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               734383904
    Equivalent to 43 /8s, 197 /16s and 207 /24s
    Percentage of available ARIN address space announced:          64.4

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, 393216-394239
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:                     70759
    Total RIPE prefixes after maximum aggregation:                41424
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            64080
    Unique aggregates announced from the RIPE address blocks:     42712
RIPE Region origin ASes present in the Internet Routing Table:    13931
    RIPE Prefixes per ASN:                                         4.60
RIPE Region origin ASes announcing only one prefix:                7257
RIPE Region transit ASes present in the Internet Routing Table:    2102
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               409348160
    Equivalent to 24 /8s, 102 /16s and 40 /24s
    Percentage of available RIPE address space announced:          76.2

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  46/8,  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:                   26903
    Total LACNIC prefixes after maximum aggregation:               6534
    LACNIC Deaggregation factor:                                   4.12
Prefixes being announced from the LACNIC address blocks:          25272
    Unique aggregates announced from the LACNIC address blocks:   13806
LACNIC Region origin ASes present in the Internet Routing Table:   1220
    LACNIC Prefixes per ASN:                                      20.71
LACNIC Region origin ASes announcing only one prefix:               386
LACNIC Region transit ASes present in the Internet Routing Table:   201
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              69882624
    Equivalent to 4 /8s, 42 /16s and 83 /24s
    Percentage of available LACNIC address space announced:        69.4

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 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:                   5961
    Total AfriNIC prefixes after maximum aggregation:              1605
    AfriNIC Deaggregation factor:                                  3.71
Prefixes being announced from the AfriNIC address blocks:          4352
    Unique aggregates announced from the AfriNIC address blocks:   1561
AfriNIC Region origin ASes present in the Internet Routing Table:   336
    AfriNIC Prefixes per ASN:                                     12.95
AfriNIC Region origin ASes announcing only one prefix:               93
AfriNIC Region transit ASes present in the Internet Routing Table:   70
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       18
Number of AfriNIC addresses announced to Internet:             14596352
    Equivalent to 0 /8s, 222 /16s and 185 /24s
    Percentage of available AfriNIC address space announced:       43.5

AfriNIC AS Blocks      36864-37887, 327680-328703 & 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     1839       7510         477   Korea Telecom (KIX)
17488     1460        144         142   Hathway IP Over Cable Interne
 4755     1279        289         144   TATA Communications formerly 
 4134     1016      19461         399   CHINANET-BACKBONE
18101     1010        204          37   Reliance Infocom Ltd Internet
 9583     1000         75         502   Sify Limited
 7545      922        198          96   TPG Internet Pty Ltd
17974      859        273          61   PT TELEKOMUNIKASI INDONESIA
 9829      853        677          24   BSNL National Internet Backbo
 4808      833       1583         211   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     4166       3891         300   bellsouth.net, inc. 
 4323     3779       1052         399   Time Warner Telecom
 1785     1799        699         133   PaeTec Communications, Inc.
 7018     1589       5791        1030   AT&T WorldNet Services
20115     1535       1487         667   Charter Communications 
 2386     1291        617         928   AT&T Data Communications Serv
 3356     1203      10929         423   Level 3 Communications, LLC 
11492     1153        222          14   Cable One 
22773     1123       2600          66   Cox Communications, Inc.
 6478     1094        241         304   AT&T Worldnet Services 

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      517         98         207   Evolva Telecom
35805      515         40           5   United Telecom of Georgia
 3292      448       1903         393   TDC Tele Danmark
  702      419       1837         337   UUNET - Commercial IP service
 8551      391        354          40   Bezeq International
 8866      374        110          23   Bulgarian Telecommunication C
 3320      363       7068         309   Deutsche Telekom AG
 3301      351       1412         306   TeliaNet Sweden
 3215      349       3160         112   France Telecom Transpac
 9198      329        202          13   Kazakhtelecom Data Network Ad

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     1572       2898         233   UniNet S.A. de C.V. 
10620     1005        224         131   TVCABLE BOGOTA 
28573      829        674          84   NET Servicos de Comunicao S.A
 7303      664        351          98   Telecom Argentina Stet-France
22047      545        302          14   VTR PUNTO NET S.A. 
11830      472        308          59   Instituto Costarricense de El
11172      445         99          70   Servicios Alestra S.A de C.V 
14117      437         29          11   Telefonica del Sur S.A. 
 6503      432        163         178   AVANTEL, S.A. 
 7738      431        858          29   Telecomunicacoes da Bahia 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
 8452     1015        444           8   TEDATA
24863      717        143          53   LINKdotNET AS number
 3741      273        857         233   The Internet Solution 
 2018      178        196         100   Tertiary Education Network 
 6713      176        166          16   Itissalat Al-MAGHRIB
29571      157         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      123          7          11   Starcomms Nigeria Limited
 5536      121          8          18   Internet Egypt Network
 5713      114        505          68   Telkom SA Ltd 

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     4166       3891         300   bellsouth.net, inc. 
 4323     3779       1052         399   Time Warner Telecom
 4766     1839       7510         477   Korea Telecom (KIX)
 1785     1799        699         133   PaeTec Communications, Inc.
 7018     1589       5791        1030   AT&T WorldNet Services
 8151     1572       2898         233   UniNet S.A. de C.V. 
20115     1535       1487         667   Charter Communications 
17488     1460        144         142   Hathway IP Over Cable Interne
 2386     1291        617         928   AT&T Data Communications Serv
 4755     1279        289         144   TATA Communications formerly 

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

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
 4323      3779        3380      Time Warner Telecom
 1785      1799        1666      PaeTec Communications, Inc.
 4766      1839        1362      Korea Telecom (KIX)
 8151      1572        1339      UniNet S.A. de C.V. 
17488      1460        1318      Hathway IP Over Cable Interne
11492      1153        1139      Cable One 
 4755      1279        1135      TATA Communications formerly 
22773      1123        1057      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1015        1007      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
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

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        /8:21       /9:10      /10:25      /11:65      /12:181     
/13:382     /14:653     /15:1233    /16:10825   /17:5041    /18:8614    
/19:17705   /20:21604   /21:21482   /22:27858   /23:28034   /24:160868  
/25:926     /26:1173    /27:582     /28:224     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2724          4166      bellsouth.net, inc. 
 4323     2368          3779      Time Warner Telecom
 4766     1479          1839      Korea Telecom (KIX)
 1785     1267          1799      PaeTec Communications, Inc.
17488     1228          1460      Hathway IP Over Cable Interne
11492     1073          1153      Cable One 
18566     1040          1059      Covad Communications 
 7018      960          1589      AT&T WorldNet Services
 8452      911          1015      TEDATA
10620      910          1005      TVCABLE BOGOTA 

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

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

   2:1         4:13        8:243      12:2011     13:9        15:22     
  16:3        17:8        20:37       24:1291     32:49       38:637    
  40:99       41:1848     44:3        46:1        47:30       52:6      
  55:2        56:2        57:24       58:646      59:619      60:446    
  61:976      62:977      63:2009     64:3793     65:2368     66:4102   
  67:1838     68:1041     69:2837     70:688      71:231      72:1883   
  73:3        74:2075     75:225      76:359      77:873      78:602    
  79:405      80:965      81:802      82:462      83:441      84:508    
  85:1008     86:381      87:688      88:423      89:1549     90:64     
  91:2659     92:425      93:1144     94:1345     95:794      96:195    
  97:289      98:454      99:23      109:203     110:283     111:547    
 112:169     113:224     114:301     115:402     116:1109    117:592    
 118:386     119:810     120:148     121:699     122:1377    123:814    
 124:1025    125:1305    128:212     129:201     130:134     131:459    
 132:85      133:16      134:188     135:41      136:228     137:176    
 138:235     139:81      140:463     141:122     142:375     143:340    
 144:393     145:53      146:387     147:179     148:556     149:196    
 150:146     151:172     152:228     153:162     154:2       155:270    
 156:178     157:330     158:98      159:355     160:306     161:175    
 162:281     163:188     164:309     165:472     166:489     167:393    
 168:761     169:159     170:567     171:42      172:1       173:407    
 174:513     175:21      180:267     183:190     184:3       186:242    
 187:219     188:1121    189:613     190:3430    192:5718    193:4375   
 194:3364    195:2775    196:1197    198:3552    199:3395    200:5248   
 201:1446    202:8058    203:8273    204:3984    205:2173    206:2410   
 207:3053    208:3948    209:3392    210:2525    211:1170    212:1655   
 213:1651    214:250     215:56      216:4428    217:1389    218:477    
 219:422     220:1150    221:455     222:301    

End of report




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