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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Apr 06 14:10:52 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 07 Apr, 2007

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

BGP routing table entries examined:                              217445
    Prefixes after maximum aggregation:                          116217
    Deaggregation factor:                                          1.87
    Unique aggregates announced to Internet:                     104542
Total ASes present in the Internet Routing Table:                 24844
    Prefixes per ASN:                                              8.75
Origin-only ASes present in the Internet Routing Table:           21659
Origin ASes announcing only one prefix:                           10450
Transit ASes present in the Internet Routing Table:                3185
Transit-only ASes present in the Internet Routing Table:             74
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (16327)                               21
Prefixes from unregistered ASNs in the Routing Table:                 3
    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:                   1705019720
    Equivalent to 101 /8s, 160 /16s and 137 /24s
    Percentage of available address space announced:               46.0
    Percentage of allocated address space announced:               62.5
    Percentage of available address space allocated:               73.7
Total number of prefixes smaller than registry allocations:      113403

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

Prefixes being announced by APNIC Region ASes:                    49833
    Total APNIC prefixes after maximum aggregation:               20069
    APNIC Deaggregation factor:                                    2.48
Prefixes being announced from the APNIC address blocks:           46877
    Unique aggregates announced from the APNIC address blocks:    21084
APNIC Region origin ASes present in the Internet Routing Table:    2909
APNIC Region origin ASes announcing only one prefix:                779
APNIC Region transit ASes present in the Internet Routing Table:    428
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              290876352
    Equivalent to 17 /8s, 86 /16s and 107 /24s
    Percentage of available APNIC address space announced:         72.1

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:                    105650
    Total ARIN prefixes after maximum aggregation:                61744
    ARIN Deaggregation factor:                                     1.71
Prefixes being announced from the ARIN address blocks:            77656
    Unique aggregates announced from the ARIN address blocks:     30162
ARIN Region origin ASes present in the Internet Routing Table:    11463
ARIN Region origin ASes announcing only one prefix:                4385
ARIN Region transit ASes present in the Internet Routing Table:    1045
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          21
Number of ARIN addresses announced to Internet:               327721344
    Equivalent to 19 /8s, 136 /16s and 161 /24s
    Percentage of available ARIN address space announced:          72.3

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:                     44899
    Total RIPE prefixes after maximum aggregation:                29324
    RIPE Deaggregation factor:                                     1.53
Prefixes being announced from the RIPE address blocks:            41481
    Unique aggregates announced from the RIPE address blocks:     26508
RIPE Region origin ASes present in the Internet Routing Table:     9436
RIPE Region origin ASes announcing only one prefix:                4974
RIPE Region transit ASes present in the Internet Routing Table:    1509
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               299437056
    Equivalent to 17 /8s, 217 /16s and 12 /24s
    Percentage of available RIPE address space announced:          74.4

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, 92/7, 193/8, 194/7,
                       212/7 and 217/8

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

Prefixes being announced by LACNIC Region ASes:                   14521
    Total LACNIC prefixes after maximum aggregation:               4089
    LACNIC Deaggregation factor:                                   3.55
Prefixes being announced from the LACNIC address blocks:          12617
    Unique aggregates announced from the LACNIC address blocks:    7086
LACNIC Region origin ASes present in the Internet Routing Table:    777
LACNIC Region origin ASes announcing only one prefix:               254
LACNIC Region transit ASes present in the Internet Routing Table:   134
Average LACNIC Region AS path length visible:                       4.2
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              38813952
    Equivalent to 2 /8s, 80 /16s and 65 /24s
    Percentage of available LACNIC address space announced:        57.8

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:                   2538
    Total AfriNIC prefixes after maximum aggregation:               987
    AfriNIC Deaggregation factor:                                  2.57
Prefixes being announced from the AfriNIC address blocks:          1889
    Unique aggregates announced from the AfriNIC address blocks:   1168
AfriNIC Region origin ASes present in the Internet Routing Table:   184
AfriNIC Region origin ASes announcing only one prefix:               58
AfriNIC Region transit ASes present in the Internet Routing Table:   36
Average AfriNIC Region AS path length visible:                      3.6
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:              5964288
    Equivalent to 0 /8s, 91 /16s and 2 /24s
    Percentage of available AfriNIC address space announced:       17.8

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     1286       9438         280   CHINANET-BACKBONE
 4755     1177        383          77   Videsh Sanchar Nigam Ltd. Aut
 9583     1100         78         379   Sify Limited
 9498      969        469          70   BHARTI BT INTERNET LTD.
 4766      788       4943         314   Korea Telecom (KIX)
23577      786         35         711   Korea Telecom (ATM-MPLS)
17488      626         41          32   Hathway IP Over Cable Interne
 7545      610        142          77   TPG Internet Pty Ltd
 1221      571       1956         445   Telstra Pty Ltd
18101      538        116          27   Reliance Infocom Ltd Internet
17676      503      10935          65   Softbank BB Corp.
 4668      502         68          10   LG-EDS Systems Inc.
 4812      457        791          72   China Telecom (Shanghai)
 9443      453        111          73   Primus Telecommunications
 7474      385        216         260   SingTel Optus Pty Ltd
17557      369         35         175   Pakistan Telecom
 4802      359         86         150   Wantree Development
 4837      342       4596         157   chinanet IDC center beijing n
17974      342        129          14   PT TELEKOMUNIKASI INDONESIA
 2907      338       1749         311   SINET Japan

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1500       6127         983   AT&T WorldNet Services
 4323     1271       1021         353   Time Warner Telecom
 2386     1089        558         731   AT&T Data Communications Serv
 6478     1085        333         152   AT&T Worldnet Services 
 6197     1033        682         500   BellSouth Network Solutions, 
11492     1023        102          12   Cable One 
18566      999        288           9   Covad Communications 
  174      941       6791         860   Cogent Communications
  701      926       6658         727   UUNET Technologies, Inc. 
 1239      820       2715         571   Sprint 
20115      811        722         426   Charter Communications 
 7011      780        225         463   Citizens Utilities 
19262      723       2566         164   Verizon Global Networks 
  209      721       3733         572   Qwest 
22773      696       1871          42   Cox Communications, Inc.
  721      619      21756         274   DLA Systems Automation Center
  852      591       1096         378   Telus Advanced Communications
 5668      582        160          17   CenturyTel Internet Holdings,
19916      568         49          54   OLM LLC 
  855      565        250          71   Canadian Research Network 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      520       1941         414   UUNET - Commercial IP service
24863      340         47          32   LINKdotNET AS number
 3301      309       1455         289   TeliaNet Sweden
 3320      303       4993         251   Deutsche Telekom AG
 6746      275         95         252   Dynamic Network Technologies,
 8220      265        463         255   COLT Telecommunications
  680      257       2044         250   DFN-IP service G-WiN
 5416      249         15          15   BATELCO-BH
 3215      239       2256          92   France Telecom Transpac
 8708      233        287         226   Romania Data Systems S.A.
 1257      222       1180         168   SWIPnet Swedish IP Network
 3269      216       2583          73   TELECOM ITALIA
 3246      208        354         197   Song Networks
 8551      206        196          30   Bezeq International
30890      205         17          93   SC Kappa Invexim SRL
20858      199         34           4   EgyNet
 3352      196       1795          36   Ibernet, Internet Access Netw
12479      185        578           6   Uni2 Autonomous System
 3300      184        171          89   AUCS Communications Services 
  786      175       1795         175   The JANET IP Service

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1073       2009         211   UniNet S.A. de C.V. 
11830      483        299          19   Instituto Costarricense de El
11172      361        116          66   Servicios Alestra S.A de C.V 
16814      361         22           8   NSS, S.A. 
22047      310        238          12   VTR PUNTO NET S.A. 
 7303      265        143          24   Telecom Argentina Stet-France
 6471      259         74          31   ENTEL CHILE S.A. 
14117      242         17          14   Telefonica del Sur S.A. 
11556      237        128           4   Cable-Wireless Panama 
 6147      227        180          24   Telefonica Del Peru 
 6503      212        171          84   AVANTEL, S.A. 
20299      182         25          23   NEWCOM AMERICAS 
10481      181         72           8   Prima S.A. 
10620      164         48          22   TVCABLE BOGOTA 
21826      156         28          59   INTERCABLE 
23216      156         19          47   RAMtelecom Telecomunicaciones
 7910      154         11          29   ANDINET ON LINE 
19429      148         91          38   E.T.B. 
14522      147         22           5   SatNet S.A. 
18822      146          9           6   TELEFONICA MANQUEHUE 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      291        868         232   The Internet Solution 
 8452      209        188           7   TEDATA
 6713      143        135          11   Itissalat Al-MAGHRIB
 2018      138        309         113   Tertiary Education Network 
15475      128         84           4   Nile Online
 5536      123          8          15   Internet Egypt Network
33783      113          7           7   EEPAD TISP TELECOM & INTERNET
 2905       85        176          74   The Internetworking Company o
24835       85         48           6   RAYA Telecom - Egypt
 2561       61          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       42         13          23   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
21280       27          4           4   Swift Global Kenya Ltd.Is an 
33776       27          2           5   Starcomms Nigeria Limited
12455       25          6           3   Jambonet Autonomous system

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

  ASN   No of nets  Net Savings Description
 4755      1177        1100      Videsh Sanchar Nigam Ltd. Aut
11492      1023        1011      Cable One 
 4134      1286        1006      CHINANET-BACKBONE
18566       999         990      Covad Communications 
 6478      1085         933      AT&T Worldnet Services 
 4323      1271         918      Time Warner Telecom
 9498       969         899      BHARTI BT INTERNET LTD.
 8151      1073         862      UniNet S.A. de C.V. 
 9583      1100         721      Sify Limited
22773       696         654      Cox Communications, Inc.
17488       626         594      Hathway IP Over Cable Interne
 5668       582         565      CenturyTel Internet Holdings,
19262       723         559      Verizon Global Networks 
 6197      1033         533      BellSouth Network Solutions, 
 7545       610         533      TPG Internet Pty Ltd
19916       568         514      OLM LLC 
18101       538         511      Reliance Infocom Ltd Internet
  855       565         494      Canadian Research Network 
 4668       502         492      LG-EDS Systems Inc.
 7029       565         484      Alltel Information Services, 

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

Bad AS  Designation  Network              Transit AS  Description
65332   PRIVATE       63.166.106.192/27     1803       SPRINT 
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        /8:20       /9:9       /10:12      /11:34      /12:122     
/13:235     /14:445     /15:851     /16:9340    /17:3802    /18:6278    
/19:13423   /20:15066   /21:13615   /22:17683   /23:19065   /24:115168  
/25:775     /26:810     /27:483     /28:60      /29:40      /30:69      
/31:0       /32:40      

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

  ASN   No of nets  Total ann.   Description
 6478     1076          1085      AT&T Worldnet Services 
11492     1009          1023      Cable One 
18566      981           999      Covad Communications 
 9583      940          1100      Sify Limited
 7018      817          1500      AT&T WorldNet Services
 2386      811          1089      AT&T Data Communications Serv
 6197      796          1033      BellSouth Network Solutions, 
23577      772           786      Korea Telecom (ATM-MPLS)
 7011      683           780      Citizens Utilities 
 9498      632           969      BHARTI BT INTERNET LTD.
 4766      593           788      Korea Telecom (KIX)
 4755      573          1177      Videsh Sanchar Nigam Ltd. Aut
19916      563           568      OLM LLC 
 4323      529          1271      Time Warner Telecom
 4668      492           502      LG-EDS Systems Inc.
15270      486           518      PaeTec.net -a division of Pae
  855      463           565      Canadian Research Network 
18101      462           538      Reliance Infocom Ltd Internet
 5668      450           582      CenturyTel Internet Holdings,
17488      448           626      Hathway IP Over Cable Interne

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

   4:9         7:1         8:65        9:1        12:1797     15:19     
  16:3        17:3        18:8        20:36       24:948      25:1      
  32:53       38:294      40:57       41:112      44:2        47:4      
  52:4        55:1        56:3        57:25       58:366      59:360    
  60:228      61:906      62:991      63:1968     64:3111     65:2314   
  66:3223     67:775      68:645      69:1785     70:490      71:111    
  72:1247     73:1        74:326      75:175      76:31       77:156    
  80:810      81:788      82:663      83:380      84:473      85:758    
  86:381      87:462      88:251      89:887      90:19       91:261    
  97:1       116:10      121:163     122:521     123:64      124:759    
 125:915     128:273     129:223     130:124     131:350     132:51     
 133:10      134:192     135:38      136:175     137:87      138:191    
 139:55      140:482     141:142     142:369     143:213     144:281    
 145:43      146:323     147:146     148:381     149:179     150:115    
 151:124     152:92      153:121     154:5       155:252     156:152    
 157:181     158:160     159:154     160:103     161:90      162:235    
 163:141     164:452     165:401     166:247     167:293     168:499    
 169:117     170:393     171:15      172:1       189:243     190:548    
 192:5741    193:3780    194:3076    195:2197    196:917     198:3749   
 199:3282    200:4651    201:1008    202:7250    203:7418    204:3948   
 205:2107    206:2413    207:2880    208:2615    209:3604    210:2387   
 211:933     212:1287    213:1423    214:406     215:39      216:3996   
 217:1167    218:355     219:301     220:896     221:390     222:269    


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