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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Feb 15 13:14:36 2008

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 16 Feb, 2008

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

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

BGP routing table entries examined:                              246017
    Prefixes after maximum aggregation:                          125334
    Deaggregation factor:                                          1.96
    Unique aggregates announced to Internet:                     120557
Total ASes present in the Internet Routing Table:                 27382
    Prefixes per ASN:                                              8.98
Origin-only ASes present in the Internet Routing Table:           23879
Origin ASes announcing only one prefix:                           11589
Transit ASes present in the Internet Routing Table:                3503
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:                                      19
    Max AS path prepend of ASN (29642)                               15
Prefixes from unregistered ASNs in the Routing Table:                41
    Unregistered ASNs in the Routing Table:                          15
Number of 32-bit ASNs allocated by the RIRs:                         46
Prefixes from 32-bit ASNs in the Routing Table:                       9
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            871
Number of addresses announced to Internet:                   1834332256
    Equivalent to 109 /8s, 85 /16s and 176 /24s
    Percentage of available address space announced:               49.5
    Percentage of allocated address space announced:               61.5
    Percentage of available address space allocated:               80.5
    Percentage of address space in use by end-sites:               70.1
Total number of prefixes smaller than registry allocations:      116298

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

Prefixes being announced by APNIC Region ASes:                    56489
    Total APNIC prefixes after maximum aggregation:               21163
    APNIC Deaggregation factor:                                    2.67
Prefixes being announced from the APNIC address blocks:           53983
    Unique aggregates announced from the APNIC address blocks:    23916
APNIC Region origin ASes present in the Internet Routing Table:    3127
    APNIC Prefixes per ASN:                                       17.26
APNIC Region origin ASes announcing only one prefix:                824
APNIC Region transit ASes present in the Internet Routing Table:    479
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              329581984
    Equivalent to 19 /8s, 165 /16s and 5 /24s
    Percentage of available APNIC address space announced:         75.6

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, 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, 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:                    115479
    Total ARIN prefixes after maximum aggregation:                65634
    ARIN Deaggregation factor:                                     1.76
Prefixes being announced from the ARIN address blocks:            84224
    Unique aggregates announced from the ARIN address blocks:     33644
ARIN Region origin ASes present in the Internet Routing Table:    12147
    ARIN Prefixes per ASN:                                         6.93
ARIN Region origin ASes announcing only one prefix:                4689
ARIN Region transit ASes present in the Internet Routing Table:    1147
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               357097600
    Equivalent to 21 /8s, 72 /16s and 224 /24s
    Percentage of available ARIN address space announced:          78.8

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,  64/8,  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, 199/8, 204/8,
                       205/8, 206/8, 207/8, 208/8, 209/8, 216/8,

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

Prefixes being announced by RIPE Region ASes:                     52198
    Total RIPE prefixes after maximum aggregation:                32717
    RIPE Deaggregation factor:                                     1.60
Prefixes being announced from the RIPE address blocks:            47338
    Unique aggregates announced from the RIPE address blocks:     31707
RIPE Region origin ASes present in the Internet Routing Table:    10900
    RIPE Prefixes per ASN:                                         4.34
RIPE Region origin ASes announcing only one prefix:                5703
RIPE Region transit ASes present in the Internet Routing Table:    1653
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               345822848
    Equivalent to 20 /8s, 156 /16s and 214 /24s
    Percentage of available RIPE address space announced:          79.3

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
RIPE Address Blocks     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, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   18589
    Total LACNIC prefixes after maximum aggregation:               4686
    LACNIC Deaggregation factor:                                   3.97
Prefixes being announced from the LACNIC address blocks:          16978
    Unique aggregates announced from the LACNIC address blocks:    9322
LACNIC Region origin ASes present in the Internet Routing Table:    905
    LACNIC Prefixes per ASN:                                      18.76
LACNIC Region origin ASes announcing only one prefix:               297
LACNIC Region transit ASes present in the Internet Routing Table:   152
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              48126464
    Equivalent to 2 /8s, 222 /16s and 90 /24s
    Percentage of available LACNIC address space announced:        47.8

LACNIC AS Blocks       26592-26623, 27648-28671, 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:                   3220
    Total AfriNIC prefixes after maximum aggregation:              1116
    AfriNIC Deaggregation factor:                                  2.89
Prefixes being announced from the AfriNIC address blocks:          3659
    Unique aggregates announced from the AfriNIC address blocks:   1750
AfriNIC Region origin ASes present in the Internet Routing Table:   228
    AfriNIC Prefixes per ASN:                                     16.05
AfriNIC Region origin ASes announcing only one prefix:               76
AfriNIC Region transit ASes present in the Internet Routing Table:   42
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10004480
    Equivalent to 0 /8s, 152 /16s and 168 /24s
    Percentage of available AfriNIC address space announced:       29.8

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
 4755     1576        386          78   Videsh Sanchar Nigam Ltd. Aut
 9498     1159        549          60   BHARTI BT INTERNET LTD.
 9583     1132         83         443   Sify Limited
17488      983         63          87   Hathway IP Over Cable Interne
 4134      863      11881         311   CHINANET-BACKBONE
 4766      852       5495         344   Korea Telecom (KIX)
23577      819         34         698   Korea Telecom (ATM-MPLS)
18101      713        128          65   Reliance Infocom Ltd Internet
 9829      596        449          11   BSNL National Internet Backbo
 4812      552        940          84   China Telecom (Shanghai)

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
 7018     1429       6004         990   AT&T WorldNet Services
 4323     1388       1012         367   Time Warner Telecom
 2386     1363        634         832   AT&T Data Communications Serv
11492     1215        138          15   Cable One 
 7011     1055        307         608   Citizens Utilities 
18566     1042        296          10   Covad Communications 
 6197     1034        754         511   BellSouth Network Solutions, 
  174      984       6835         815   Cogent Communications
 6478      927        237         112   AT&T Worldnet Services 
20115      887        808         484   Charter Communications 

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
 8452      397        188           7   TEDATA
 3292      396       1778         359   TDC Tele Danmark
 3301      333       1459         304   TeliaNet Sweden
 3320      325       7045         269   Deutsche Telekom AG
 8866      288         78          24   Bulgarian Telecommunication C
 8551      279        267          42   Bezeq International
  680      275       2046         256   DFN-IP service G-WiN
 3215      272       2607          94   France Telecom Transpac
 8708      271        420         241   Romania Data Systems S.A.
 6746      270        128         247   Dynamic Network Technologies,

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     1153       2421         217   UniNet S.A. de C.V. 
11830      555        299           9   Instituto Costarricense de El
 7303      443        215          59   Telecom Argentina Stet-France
16814      427         27          10   NSS, S.A. 
11172      401        115          65   Servicios Alestra S.A de C.V 
 6471      397         85          40   ENTEL CHILE S.A. 
10620      375         98          35   TVCABLE BOGOTA 
14117      351         23          16   Telefonica del Sur S.A. 
22047      323        270          14   VTR PUNTO NET S.A. 
10481      301        120          10   Prima 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
24863      406         60          29   LINKdotNET AS number
 3741      282        869         224   The Internet Solution 
 2018      148        276         116   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
 5536      120          8          16   Internet Egypt Network
33783      115         10          13   EEPAD TISP TELECOM & INTERNET
33776       99          6           7   Starcomms Nigeria Limited
20858       91         34           3   EgyNet
24835       89         48           7   RAYA Telecom - Egypt
29571       80         13           7   Ci Telecom Autonomous system 

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
 4755     1576        386          78   Videsh Sanchar Nigam Ltd. Aut
 7018     1429       6004         990   AT&T WorldNet Services
 4323     1388       1012         367   Time Warner Telecom
 2386     1363        634         832   AT&T Data Communications Serv
11492     1215        138          15   Cable One 
 9498     1159        549          60   BHARTI BT INTERNET LTD.
 8151     1153       2421         217   UniNet S.A. de C.V. 
 9583     1132         83         443   Sify Limited
 7011     1055        307         608   Citizens Utilities 
18566     1042        296          10   Covad Communications 

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

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

  ASN   No of nets  Net Savings Description
11492      1215        1200      Cable One 
 9498      1159        1099      BHARTI BT INTERNET LTD.
18566      1042        1032      Covad Communications 
 4323      1388        1021      Time Warner Telecom
 8151      1153         936      UniNet S.A. de C.V. 
17488       983         896      Hathway IP Over Cable Interne
 6478       927         815      AT&T Worldnet Services 
22773       861         796      Cox Communications, Inc.
19262       879         731      Verizon Global Networks 
 9583      1132         689      Sify Limited

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

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

Bad AS  Designation  Network              Transit AS  Description
15190   UNALLOCATED   63.98.176.0/24         701       UUNET Technologies, 
18506   UNALLOCATED   63.107.123.0/24        701       UUNET Technologies, 
16886   UNALLOCATED   63.109.3.0/24         1239       Sprint 
16886   UNALLOCATED   63.167.139.0/24       1239       Sprint 
33526   UNALLOCATED   64.128.26.0/24        4323       Time Warner Telecom
21624   UNALLOCATED   65.163.176.0/24        701       UUNET Technologies, 
65000   PRIVATE       92.62.240.0/20       24750       Cable Internet Syste
64601   PRIVATE       118.232.77.0/24       9924       Taiwan Fixed Network
64601   PRIVATE       118.232.78.0/24       9924       Taiwan Fixed Network
64601   PRIVATE       118.232.224.0/21      9924       Taiwan Fixed Network

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

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

Network            Origin AS  Description
24.48.10.0/23        19548     Adelphia Business Solutions 
24.48.12.0/22        19548     Adelphia Business Solutions 
24.48.80.0/21        19548     Adelphia Business Solutions 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.142.40.0/21        7018     AT&T WorldNet Services
24.142.160.0/19       7018     AT&T WorldNet Services
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
60.253.0.0/18        27572     Connexion by Boeing 
60.253.64.0/19       27572     Connexion by Boeing 

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       /9:9       /10:16      /11:39      /12:134     
/13:277     /14:495     /15:985     /16:9767    /17:4244    /18:7106    
/19:15119   /20:17290   /21:16363   /22:20733   /23:21818   /24:128946  
/25:863     /26:1106    /27:562     /28:108     /29:9       /30:1       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1203          1215      Cable One 
 2386     1066          1363      AT&T Data Communications Serv
18566     1023          1042      Covad Communications 
 9583      977          1132      Sify Limited
 7011      938          1055      Citizens Utilities 
 4755      931          1576      Videsh Sanchar Nigam Ltd. Aut
 6478      926           927      AT&T Worldnet Services 
 9498      833          1159      BHARTI BT INTERNET LTD.
23577      810           819      Korea Telecom (ATM-MPLS)
17488      798           983      Hathway IP Over Cable Interne

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

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

   4:9         8:101      12:1978     13:2        15:21       16:3      
  17:6        18:13       20:35       22:1        24:1026     25:1      
  32:61       33:4        38:390      40:65       41:579      44:2      
  47:8        52:3        55:3        56:3        57:22       58:517    
  59:425      60:407      61:988      62:1034     63:1958     64:3358   
  65:2353     66:3656     67:1115     68:633      69:2097     70:474    
  71:107      72:1488     73:6        74:825      75:169      76:252    
  77:549      78:491      79:77       80:877      81:824      82:577    
  83:359      84:463      85:1008     86:392      87:648      88:308    
  89:1117     90:12       91:981      92:137      93:63       95:1      
  96:12       97:10       98:54       99:2       114:1       115:1      
 116:524     117:252     118:78      119:143     121:439     122:691    
 123:295     124:798     125:1122    128:310     129:198     130:132    
 131:398     132:69      133:9       134:188     135:37      136:218    
 137:117     138:156     139:63      140:494     141:106     142:377    
 143:270     144:327     145:53      146:337     147:132     148:478    
 149:178     150:124     151:148     152:95      153:131     154:11     
 155:288     156:199     157:250     158:163     159:214     160:229    
 161:99      162:202     163:192     164:563     165:423     166:292    
 167:308     168:576     169:132     170:431     171:28      172:3      
 189:152     190:1369    192:5768    193:4098    194:3244    195:2337   
 196:975     198:3783    199:3199    200:5445    201:1273    202:7566   
 203:7804    204:3971    205:2060    206:2415    207:2719    208:3152   
 209:3577    210:2524    211:1034    212:1268    213:1576    214:449    
 215:47      216:4161    217:1179    218:340     219:400     220:1097   
 221:411     222:301    

End of report