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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Mar 16 14:07:48 2007

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 [email protected]

For historical data, please see http://thyme.apnic.net.

If you have any comments please contact Philip Smith <[email protected]>.

Routing Table Report   04:00 +10GMT Sat 17 Mar, 2007

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

BGP routing table entries examined:                              215817
    Prefixes after maximum aggregation:                          115556
    Deaggregation factor:                                          1.87
    Unique aggregates announced to Internet:                     104950
Total ASes present in the Internet Routing Table:                 24639
Origin-only ASes present in the Internet Routing Table:           21439
Origin ASes announcing only one prefix:                           10359
Transit ASes present in the Internet Routing Table:                3200
Transit-only ASes present in the Internet Routing Table:             71
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      29
    Max AS path prepend of ASN (31269)                               23
Prefixes from unregistered ASNs in the Routing Table:                 4
    Unregistered ASNs in the Routing Table:                           5
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1688675212
    Equivalent to 100 /8s, 167 /16s and 35 /24s
    Percentage of available address space announced:               45.6
    Percentage of allocated address space announced:               62.6
    Percentage of available address space allocated:               72.8
Total number of prefixes smaller than registry allocations:      112245

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

Prefixes being announced by APNIC Region ASes:                    49398
    Total APNIC prefixes after maximum aggregation:               19932
    APNIC Deaggregation factor:                                    2.48
Prefixes being announced from the APNIC address blocks:           46476
    Unique aggregates announced from the APNIC address blocks:    20919
APNIC Region origin ASes present in the Internet Routing Table:    2896
APNIC Region origin ASes announcing only one prefix:                780
APNIC Region transit ASes present in the Internet Routing Table:    432
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              287310976
    Equivalent to 17 /8s, 32 /16s and 4 /24s
    Percentage of available APNIC address space announced:         71.2

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911
APNIC Address Blocks   58/7, 60/7, 116/6, 120/6, 124/7, 126/8, 202/7
                       210/7, 218/7, 220/7 and 222/8

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    105063
    Total ARIN prefixes after maximum aggregation:                61530
    ARIN Deaggregation factor:                                     1.71
Prefixes being announced from the ARIN address blocks:            77083
    Unique aggregates announced from the ARIN address blocks:     29859
ARIN Region origin ASes present in the Internet Routing Table:    11405
ARIN Region origin ASes announcing only one prefix:                4374
ARIN Region transit ASes present in the Internet Routing Table:    1044
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          21
Number of ARIN addresses announced to Internet:               320763008
    Equivalent to 19 /8s, 30 /16s and 116 /24s
    Percentage of available ARIN address space announced:          70.8

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
ARIN Address Blocks    24/8, 63/8, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     44473
    Total RIPE prefixes after maximum aggregation:                29021
    RIPE Deaggregation factor:                                     1.53
Prefixes being announced from the RIPE address blocks:            41144
    Unique aggregates announced from the RIPE address blocks:     27331
RIPE Region origin ASes present in the Internet Routing Table:     9307
RIPE Region origin ASes announcing only one prefix:                4890
RIPE Region transit ASes present in the Internet Routing Table:    1519
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          29
Number of RIPE addresses announced to Internet:               294731652
    Equivalent to 17 /8s, 145 /16s and 63 /24s
    Percentage of available RIPE address space announced:          79.9

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
                       40960-43007
RIPE Address Blocks    62/8, 77/8, 78/7, 80/5, 88/6, 193/8, 194/7,
                       212/7 and 217/8

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   14306
    Total LACNIC prefixes after maximum aggregation:               4096
    LACNIC Deaggregation factor:                                   3.49
Prefixes being announced from the LACNIC address blocks:          12343
    Unique aggregates announced from the LACNIC address blocks:    7123
LACNIC Region origin ASes present in the Internet Routing Table:    775
LACNIC Region origin ASes announcing only one prefix:               254
LACNIC Region transit ASes present in the Internet Routing Table:   136
Average LACNIC Region AS path length visible:                       4.2
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              38253056
    Equivalent to 2 /8s, 71 /16s and 178 /24s
    Percentage of available LACNIC address space announced:        57.0

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  189/8, 190/8, 200/7

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   2573
    Total AfriNIC prefixes after maximum aggregation:               975
    AfriNIC Deaggregation factor:                                  2.64
Prefixes being announced from the AfriNIC address blocks:          1876
    Unique aggregates announced from the AfriNIC address blocks:   1157
AfriNIC Region origin ASes present in the Internet Routing Table:   184
AfriNIC Region origin ASes announcing only one prefix:               60
AfriNIC Region transit ASes present in the Internet Routing Table:   35
Average AfriNIC Region AS path length visible:                      3.6
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:              5430272
    Equivalent to 0 /8s, 82 /16s and 220 /24s
    Percentage of available AfriNIC address space announced:       16.2

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4134     1285       9138         280   CHINANET-BACKBONE
 4755     1142        383          76   Videsh Sanchar Nigam Ltd. Aut
 9583     1086         78         366   Sify Limited
 9498      968        468          70   BHARTI BT INTERNET LTD.
23577      784         35         713   Korea Telecom (ATM-MPLS)
 4766      776       4943         311   Korea Telecom (KIX)
17488      612         40          28   Hathway IP Over Cable Interne
 7545      595        142          75   TPG Internet Pty Ltd
 1221      578       1957         452   Telstra Pty Ltd
18101      542        116          26   Reliance Infocom Ltd Internet
17676      503      10935          65   Softbank BB Corp.
 4668      454         68          10   LG-EDS Systems Inc.
 9443      454        111          74   Primus Telecommunications
 4812      446        786          71   China Telecom (Shanghai)
 7474      381        216         260   SingTel Optus Pty Ltd
 4802      360         86         149   Wantree Development
17557      349         34         171   Pakistan Telecom
 4837      341       4388         152   chinanet IDC center beijing n
 2907      337       1733         310   SINET Japan
17974      337        129          14   PT TELEKOMUNIKASI INDONESIA

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1504       6128         980   AT&T WorldNet Services
 4323     1332       1005         352   Time Warner Telecom
 6478     1133        433         188   AT&T Worldnet Services 
 2386     1096        566         738   AT&T Data Communications Serv
 6197     1032        675         499   BellSouth Network Solutions, 
11492     1005        101          17   Cable One 
18566      997        288           9   Covad Communications 
  174      942       6792         865   Cogent Communications
  701      938       6692         739   UUNET Technologies, Inc. 
 1239      823       2716         575   Sprint 
20115      819        710         419   Charter Communications 
 7011      775        226         463   Citizens Utilities 
19262      740       2601         172   Verizon Global Networks 
22773      734       1872          41   Cox Communications, Inc.
  209      716       3732         568   Qwest 
  721      618      21756         274   DLA Systems Automation Center
  852      592       1088         379   Telus Advanced Communications
 5668      579        160          16   CenturyTel Internet Holdings,
19916      568         49          54   OLM LLC 
  855      567        250          71   Canadian Research Network 

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      520       1878         413   UUNET - Commercial IP service
24863      335         46          28   LINKdotNET AS number
 3301      313       1200         292   TeliaNet Sweden
 3320      299       4994         250   Deutsche Telekom AG
 8220      272        469         262   COLT Telecommunications
 6746      269         95         248   Dynamic Network Technologies,
  680      257       2044         251   DFN-IP service G-WiN
 5416      254         16          12   BATELCO-BH
 3215      235       2208          96   France Telecom Transpac
 8708      235        284         228   Romania Data Systems S.A.
 1257      222       1180         169   SWIPnet Swedish IP Network
 3269      217       2519          75   TELECOM ITALIA
 8551      206        196          30   Bezeq International
 3246      205        355         195   Song Networks
30890      205         17          95   SC Kappa Invexim SRL
20858      198         34           3   EgyNet
 3352      191       1795          36   Ibernet, Internet Access Netw
 3300      185        171          90   AUCS Communications Services 
12479      182        578           6   Uni2 Autonomous System
  786      173       1795         173   The JANET IP Service

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1074       2024         209   UniNet S.A. de C.V. 
11830      482        299          19   Instituto Costarricense de El
11172      350        108          84   Servicios Alestra S.A de C.V 
16814      329         20           8   NSS, S.A. 
22047      307        206          11   VTR PUNTO NET S.A. 
 6471      256         74          30   ENTEL CHILE S.A. 
 7303      256        142          23   Telecom Argentina Stet-France
14117      239         16          13   Telefonica del Sur S.A. 
11556      237        128           4   Cable-Wireless Panama 
 6147      229        180          24   Telefonica Del Peru 
 6503      208        171          81   AVANTEL, S.A. 
10481      181         72           8   Prima S.A. 
20299      174         25          23   NEWCOM AMERICAS 
21826      162         29          58   INTERCABLE 
 7910      154         11          33   ANDINET ON LINE 
23216      154         19          42   RAMtelecom Telecomunicaciones
10620      150         45          19   TVCABLE BOGOTA 
19429      146         91          37   E.T.B. 
18822      145          9          10   TELEFONICA MANQUEHUE 
14522      144         22           5   SatNet S.A. 

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      291        868         232   The Internet Solution 
 8452      220         60           6   TEDATA
15475      162         84           4   Nile Online
 6713      143        135          11   Itissalat Al-MAGHRIB
 2018      138        309         113   Tertiary Education Network 
 5536      123          8          15   Internet Egypt Network
33783      111          6           5   EEPAD TISP TELECOM & INTERNET
24835       86         48           6   RAYA Telecom - Egypt
 2905       85        176          74   The Internetworking Company o
 2561       64          6           2   Egyptian Universities Network
15706       55         12           4   Sudatel Internet Exchange Aut
23889       49         16          13   MAURITIUS TELECOM
 5713       44        294          34   Telkom SA Ltd 
33774       41         12          22   AS Number for Telecom Algeria
16637       33         21          25   Johnnic e-Ventures 
33766       33          2           1   Nyala Communications Pty Ltd 
 8524       30          2           6   AUCEGYPT Autonomous System
12455       27          6           3   Jambonet Autonomous system
21280       27          4           4   Swift Global Kenya Ltd.Is an 
33776       27          2           5   Starcomms Nigeria Limited

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

  ASN   No of nets  Net Savings Description
 4755      1142        1066      Videsh Sanchar Nigam Ltd. Aut
 4134      1285        1005      CHINANET-BACKBONE
11492      1005         988      Cable One 
18566       997         988      Covad Communications 
 4323      1332         980      Time Warner Telecom
 6478      1133         945      AT&T Worldnet Services 
 9498       968         898      BHARTI BT INTERNET LTD.
 8151      1074         865      UniNet S.A. de C.V. 
 9583      1086         720      Sify Limited
22773       734         693      Cox Communications, Inc.
17488       612         584      Hathway IP Over Cable Interne
19262       740         568      Verizon Global Networks 
 5668       579         563      CenturyTel Internet Holdings,
 6197      1032         533      BellSouth Network Solutions, 
 7545       595         520      TPG Internet Pty Ltd
18101       542         516      Reliance Infocom Ltd Internet
19916       568         514      OLM LLC 
  855       567         496      Canadian Research Network 
 7029       559         480      Alltel Information Services, 
15270       514         480      PaeTec.net -a division of Pae

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
65332   PRIVATE       63.166.106.192/27     1803       SPRINT 
64515   PRIVATE       195.47.27.0/24        6721       The Terminal Bar: In
24410   UNALLOCATED   203.119.28.0/24       4134       CHINANET-BACKBONE
22895   UNALLOCATED   216.174.38.0/24      19094       Adelphia Business So

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
7.1.1.0/24            1239     Sprint 
132.0.0.0/10           721     DLA Systems Automation Center
137.0.0.0/13           721     DLA Systems Automation Center
158.0.0.0/13           721     DLA Systems Automation Center
172.33.1.0/24         7018     AT&T WorldNet Services
180.190.0.0/16       24003     JUBILANT ORGANOSYS LTD., INDI
192.0.10.0/24         9498     BHARTI BT INTERNET LTD.
192.44.0.0/24         5501     Fraunhofer Gesellschaft
192.44.0.0/19          702     UUNET - Commercial IP service
192.70.164.0/24      25689     National Research Council of 
192.153.136.0/21       721     DLA Systems Automation Center
192.172.0.0/19         721     DLA Systems Automation Center

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:19       /9:9       /10:12      /11:33      /12:119     
/13:229     /14:438     /15:839     /16:9307    /17:3792    /18:6216    
/19:13331   /20:14973   /21:13545   /22:17496   /23:18863   /24:114292  
/25:769     /26:801     /27:483     /28:69      /29:43      /30:98      
/31:0       /32:41      

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

  ASN   No of nets  Total ann.   Description
 6478     1089          1133      AT&T Worldnet Services 
11492      991          1005      Cable One 
18566      979           997      Covad Communications 
 9583      927          1086      Sify Limited
 7018      821          1504      AT&T WorldNet Services
 2386      818          1096      AT&T Data Communications Serv
 6197      800          1032      BellSouth Network Solutions, 
23577      770           784      Korea Telecom (ATM-MPLS)
 7011      676           775      Citizens Utilities 
 9498      637           968      BHARTI BT INTERNET LTD.
 4766      584           776      Korea Telecom (KIX)
19916      563           568      OLM LLC 
 4755      546          1142      Videsh Sanchar Nigam Ltd. Aut
 4323      531          1332      Time Warner Telecom
15270      482           514      PaeTec.net -a division of Pae
  855      465           567      Canadian Research Network 
18101      465           542      Reliance Infocom Ltd Internet
 5668      450           579      CenturyTel Internet Holdings,
 4668      445           454      LG-EDS Systems Inc.
17488      434           612      Hathway IP Over Cable Interne

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

   4:9         7:1         8:65        9:1        12:1802     15:19     
  16:3        17:3        18:8        20:35       24:919      25:1      
  32:53       38:288      40:56       41:105      44:2        47:4      
  52:4        55:1        56:3        57:25       58:361      59:352    
  60:223      61:903      62:1034     63:1950     64:3070     65:2317   
  66:3161     67:760      68:664      69:1780     70:491      71:103    
  72:1231     73:1        74:292      75:87       76:12       77:98     
  80:847      81:780      82:651      83:363      84:508      85:729    
  86:422      87:481      88:245      89:837      90:18       91:222    
  97:1       116:1       117:1       118:1       119:1       120:1      
 121:149     122:521     123:57      124:762     125:918     128:271    
 129:223     130:119     131:347     132:51      133:10      134:188    
 135:37      136:181     137:86      138:194     139:56      140:480    
 141:142     142:373     143:210     144:274     145:43      146:321    
 147:145     148:386     149:187     150:114     151:120     152:94     
 153:118     154:5       155:247     156:155     157:176     158:162    
 159:153     160:104     161:90      162:236     163:174     164:449    
 165:384     166:245     167:281     168:520     169:119     170:390    
 171:15      172:1       189:240     190:463     192:5733    193:3734   
 194:2996    195:2188    196:918     198:3746    199:3280    200:4595   
 201:978     202:7215    203:7378    204:3982    205:2072    206:2444   
 207:2903    208:2557    209:3583    210:2389    211:922     212:1317   
 213:1425    214:407     215:39      216:3984    217:1167    218:351    
 219:274     220:878     221:374     222:271    

End of report
Report Website: http://thyme.apnic.net