Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 25 12:31:18 CST 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 26 Dec, 2009

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

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

BGP routing table entries examined:                              308286
    Prefixes after maximum aggregation:                          143053
    Deaggregation factor:                                          2.16
    Unique aggregates announced to Internet:                     151084
Total ASes present in the Internet Routing Table:                 32979
    Prefixes per ASN:                                              9.35
Origin-only ASes present in the Internet Routing Table:           28631
Origin ASes announcing only one prefix:                           13989
Transit ASes present in the Internet Routing Table:                4348
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:                                      53
    Max AS path prepend of ASN (38753)                               50
Prefixes from unregistered ASNs in the Routing Table:               698
    Unregistered ASNs in the Routing Table:                         131
Number of 32-bit ASNs allocated by the RIRs:                        377
Prefixes from 32-bit ASNs in the Routing Table:                     335
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            159
Number of addresses announced to Internet:                   2166385920
    Equivalent to 129 /8s, 32 /16s and 109 /24s
    Percentage of available address space announced:               58.4
    Percentage of allocated address space announced:               66.2
    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:      148666

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

Prefixes being announced by APNIC Region ASes:                    74669
    Total APNIC prefixes after maximum aggregation:               25729
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           71353
    Unique aggregates announced from the APNIC address blocks:    31168
APNIC Region origin ASes present in the Internet Routing Table:    3892
    APNIC Prefixes per ASN:                                       18.33
APNIC Region origin ASes announcing only one prefix:               1060
APNIC Region transit ASes present in the Internet Routing Table:    606
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         53
Number of APNIC addresses announced to Internet:              486028576
    Equivalent to 28 /8s, 248 /16s and 53 /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:                    129610
    Total ARIN prefixes after maximum aggregation:                67484
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:           103736
    Unique aggregates announced from the ARIN address blocks:     39062
ARIN Region origin ASes present in the Internet Routing Table:    13437
    ARIN Prefixes per ASN:                                         7.72
ARIN Region origin ASes announcing only one prefix:                5206
ARIN Region transit ASes present in the Internet Routing Table:    1334
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               734241056
    Equivalent to 43 /8s, 195 /16s and 161 /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:                     70597
    Total RIPE prefixes after maximum aggregation:                41388
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            63982
    Unique aggregates announced from the RIPE address blocks:     42697
RIPE Region origin ASes present in the Internet Routing Table:    13910
    RIPE Prefixes per ASN:                                         4.60
RIPE Region origin ASes announcing only one prefix:                7240
RIPE Region transit ASes present in the Internet Routing Table:    2094
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               409151808
    Equivalent to 24 /8s, 99 /16s and 41 /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:                   26893
    Total LACNIC prefixes after maximum aggregation:               6525
    LACNIC Deaggregation factor:                                   4.12
Prefixes being announced from the LACNIC address blocks:          25237
    Unique aggregates announced from the LACNIC address blocks:   13799
LACNIC Region origin ASes present in the Internet Routing Table:   1223
    LACNIC Prefixes per ASN:                                      20.64
LACNIC Region origin ASes announcing only one prefix:               391
LACNIC Region transit ASes present in the Internet Routing Table:   202
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              69604864
    Equivalent to 4 /8s, 38 /16s and 22 /24s
    Percentage of available LACNIC address space announced:        69.1

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:                   5959
    Total AfriNIC prefixes after maximum aggregation:              1595
    AfriNIC Deaggregation factor:                                  3.74
Prefixes being announced from the AfriNIC address blocks:          4364
    Unique aggregates announced from the AfriNIC address blocks:   1547
AfriNIC Region origin ASes present in the Internet Routing Table:   335
    AfriNIC Prefixes per ASN:                                     13.03
AfriNIC Region origin ASes announcing only one prefix:               92
AfriNIC Region transit ASes present in the Internet Routing Table:   71
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       18
Number of AfriNIC addresses announced to Internet:             14527744
    Equivalent to 0 /8s, 221 /16s and 173 /24s
    Percentage of available AfriNIC address space announced:       43.3

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     1785       7509         465   Korea Telecom (KIX)
17488     1459        145         133   Hathway IP Over Cable Interne
 4755     1285        291         146   TATA Communications formerly 
 4134     1014      19445         398   CHINANET-BACKBONE
 9583      998         75         505   Sify Limited
18101      997        204          37   Reliance Infocom Ltd Internet
 7545      920        198          94   TPG Internet Pty Ltd
 9829      848        676          23   BSNL National Internet Backbo
17974      843        272          62   PT TELEKOMUNIKASI INDONESIA
 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     4187       3891         306   bellsouth.net, inc. 
 4323     3777       1068         400   Time Warner Telecom
 1785     1798        699         134   PaeTec Communications, Inc.
 7018     1588       5791        1031   AT&T WorldNet Services
20115     1534       1486         666   Charter Communications 
 2386     1287        615         928   AT&T Data Communications Serv
 3356     1205      10930         424   Level 3 Communications, LLC 
11492     1153        222          14   Cable One 
22773     1122       2600          66   Cox Communications, Inc.
 6478     1099        242         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      518         99         208   Evolva Telecom
35805      511         40           5   United Telecom of Georgia
 3292      448       1903         393   TDC Tele Danmark
  702      419       1837         337   UUNET - Commercial IP service
 8551      386        354          41   Bezeq International
 8866      378        110          23   Bulgarian Telecommunication C
 3320      361       7068         307   Deutsche Telekom AG
 3301      350       1412         306   TeliaNet Sweden
 3215      349       3160         112   France Telecom Transpac
12479      314        578           6   Uni2 Autonomous System

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     1570       2898         230   UniNet S.A. de C.V. 
10620     1005        224         131   TVCABLE BOGOTA 
28573      829        674          84   NET Servicos de Comunicao S.A
 7303      665        351          96   Telecom Argentina Stet-France
22047      545        302          14   VTR PUNTO NET S.A. 
11830      472        308          59   Instituto Costarricense de El
11172      446         99          70   Servicios Alestra S.A de C.V 
 6503      444        163         183   AVANTEL, S.A. 
14117      437         29          11   Telefonica del Sur 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     1039        444           8   TEDATA
24863      714        142          54   LINKdotNET AS number
 3741      273        857         233   The Internet Solution 
 2018      178        196         100   Tertiary Education Network 
 6713      177        167          12   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     4187       3891         306   bellsouth.net, inc. 
 4323     3777       1068         400   Time Warner Telecom
 1785     1798        699         134   PaeTec Communications, Inc.
 4766     1785       7509         465   Korea Telecom (KIX)
 7018     1588       5791        1031   AT&T WorldNet Services
 8151     1570       2898         230   UniNet S.A. de C.V. 
20115     1534       1486         666   Charter Communications 
17488     1459        145         133   Hathway IP Over Cable Interne
 2386     1287        615         928   AT&T Data Communications Serv
 4755     1285        291         146   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      3777        3377      Time Warner Telecom
 1785      1798        1664      PaeTec Communications, Inc.
 8151      1570        1340      UniNet S.A. de C.V. 
17488      1459        1326      Hathway IP Over Cable Interne
 4766      1785        1320      Korea Telecom (KIX)
 4755      1285        1139      TATA Communications formerly 
11492      1153        1139      Cable One 
22773      1122        1056      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1039        1031      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     
/13:381     /14:652     /15:1234    /16:10834   /17:5044    /18:8613    
/19:17732   /20:21648   /21:21638   /22:27984   /23:28122   /24:161157  
/25:934     /26:1177    /27:585     /28:222     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2727          4187      bellsouth.net, inc. 
 4323     2368          3777      Time Warner Telecom
 4766     1435          1785      Korea Telecom (KIX)
 1785     1265          1798      PaeTec Communications, Inc.
17488     1224          1459      Hathway IP Over Cable Interne
11492     1073          1153      Cable One 
18566     1040          1059      Covad Communications 
 7018      958          1588      AT&T WorldNet Services
 8452      935          1039      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        8:242      12:2019     13:9        15:22     
  16:3        17:8        20:37       24:1291     32:49       38:637    
  40:99       41:1868     44:3        46:1        47:30       52:6      
  55:2        56:2        57:24       58:644      59:657      60:446    
  61:1098     62:970      63:2014     64:3801     65:2371     66:4117   
  67:1855     68:1041     69:2807     70:686      71:231      72:1884   
  73:3        74:2075     75:223      76:362      77:864      78:600    
  79:405      80:963      81:803      82:460      83:439      84:515    
  85:1000     86:379      87:692      88:420      89:1550     90:63     
  91:2667     92:418      93:1137     94:1340     95:785      96:194    
  97:290      98:463      99:23      109:202     110:281     111:516    
 112:161     113:219     114:296     115:470     116:1091    117:592    
 118:385     119:804     120:148     121:823     122:1359    123:806    
 124:1012    125:1303    128:212     129:201     130:134     131:455    
 132:83      133:16      134:188     135:41      136:228     137:168    
 138:234     139:82      140:463     141:122     142:376     143:335    
 144:390     145:53      146:390     147:180     148:564     149:196    
 150:151     151:172     152:228     153:162     154:2       155:270    
 156:174     157:332     158:98      159:355     160:305     161:174    
 162:281     163:221     164:309     165:472     166:490     167:393    
 168:761     169:160     170:571     171:42      172:1       173:404    
 174:529     175:20      180:268     183:171     184:3       186:243    
 187:217     188:1075    189:613     190:3415    192:5713    193:4361   
 194:3368    195:2776    196:1183    198:3552    199:3389    200:5233   
 201:1448    202:8018    203:8311    204:3984    205:2168    206:2424   
 207:3072    208:3944    209:3425    210:2565    211:1158    212:1652   
 213:1646    214:261     215:58      216:4438    217:1380    218:478    
 219:455     220:1166    221:449     222:300    

End of report




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