[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 11 18:07:27 UTC 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 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 12 Apr, 2008

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

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

BGP routing table entries examined:                              252904
    Prefixes after maximum aggregation:                          126821
    Deaggregation factor:                                          1.99
    Unique aggregates announced to Internet:                     121965
Total ASes present in the Internet Routing Table:                 27875
    Prefixes per ASN:                                              9.07
Origin-only ASes present in the Internet Routing Table:           24291
Origin ASes announcing only one prefix:                           11291
Transit ASes present in the Internet Routing Table:                3584
Transit-only ASes present in the Internet Routing Table:             84
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      19
    Max AS path prepend of ASN (43380)                               13
Prefixes from unregistered ASNs in the Routing Table:             25207
    Unregistered ASNs in the Routing Table:                        1888
Number of 32-bit ASNs allocated by the RIRs:                         45
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:            836
Number of addresses announced to Internet:                   1862827616
    Equivalent to 111 /8s, 8 /16s and 126 /24s
    Percentage of available address space announced:               50.3
    Percentage of allocated address space announced:               61.7
    Percentage of available address space allocated:               81.4
    Percentage of address space in use by end-sites:               71.2
Total number of prefixes smaller than registry allocations:      120992

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

Prefixes being announced by APNIC Region ASes:                    42772
    Total APNIC prefixes after maximum aggregation:               13613
    APNIC Deaggregation factor:                                    3.14
Prefixes being announced from the APNIC address blocks:           55035
    Unique aggregates announced from the APNIC address blocks:    23927
APNIC Region origin ASes present in the Internet Routing Table:    1919
    APNIC Prefixes per ASN:                                       28.68
APNIC Region origin ASes announcing only one prefix:                555
APNIC Region transit ASes present in the Internet Routing Table:    349
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              342856544
    Equivalent to 20 /8s, 111 /16s and 147 /24s
    Percentage of available APNIC address space announced:         78.6

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:                    107454
    Total ARIN prefixes after maximum aggregation:                59183
    ARIN Deaggregation factor:                                     1.82
Prefixes being announced from the ARIN address blocks:            86373
    Unique aggregates announced from the ARIN address blocks:     34178
ARIN Region origin ASes present in the Internet Routing Table:    11700
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4553
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:                          16
Number of ARIN addresses announced to Internet:               362456384
    Equivalent to 21 /8s, 154 /16s and 165 /24s
    Percentage of available ARIN address space announced:          74.5

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, 173/8, 174/8,
                       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:                     54199
    Total RIPE prefixes after maximum aggregation:                33333
    RIPE Deaggregation factor:                                     1.63
Prefixes being announced from the RIPE address blocks:            49410
    Unique aggregates announced from the RIPE address blocks:     32107
RIPE Region origin ASes present in the Internet Routing Table:    11166
    RIPE Prefixes per ASN:                                         4.43
RIPE Region origin ASes announcing only one prefix:                5830
RIPE Region transit ASes present in the Internet Routing Table:    1707
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               354345856
    Equivalent to 21 /8s, 30 /16s and 227 /24s
    Percentage of available RIPE address space announced:          81.2

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
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:                   19596
    Total LACNIC prefixes after maximum aggregation:               4892
    LACNIC Deaggregation factor:                                   4.01
Prefixes being announced from the LACNIC address blocks:          17971
    Unique aggregates announced from the LACNIC address blocks:    9697
LACNIC Region origin ASes present in the Internet Routing Table:    889
    LACNIC Prefixes per ASN:                                      20.21
LACNIC Region origin ASes announcing only one prefix:               276
LACNIC Region transit ASes present in the Internet Routing Table:   154
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              50467072
    Equivalent to 3 /8s, 2 /16s and 17 /24s
    Percentage of available LACNIC address space announced:        50.1

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:                   3675
    Total AfriNIC prefixes after maximum aggregation:              1129
    AfriNIC Deaggregation factor:                                  3.26
Prefixes being announced from the AfriNIC address blocks:          4027
    Unique aggregates announced from the AfriNIC address blocks:   1683
AfriNIC Region origin ASes present in the Internet Routing Table:   234
    AfriNIC Prefixes per ASN:                                     17.21
AfriNIC Region origin ASes announcing only one prefix:               77
AfriNIC Region transit ASes present in the Internet Routing Table:   44
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             10229760
    Equivalent to 0 /8s, 156 /16s and 24 /24s
    Percentage of available AfriNIC address space announced:       30.5

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     1627        387          89   Videsh Sanchar Nigam Ltd. Aut
 9498     1162        550          60   BHARTI BT INTERNET LTD.
 9583     1157         99         211   Sify Limited
17488     1008         68          78   Hathway IP Over Cable Interne
 4134      858      12659         319   CHINANET-BACKBONE
 4766      853       6006         343   Korea Telecom (KIX)
18101      673        127          52   Reliance Infocom Ltd Internet
 4812      613        962          92   China Telecom (Shanghai)
 9829      598        450          12   BSNL National Internet Backbo
 1221      546       1934         419   Telstra Pty Ltd

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     1443       5934        1022   AT&T WorldNet Services
 4323     1428       1029         376   Time Warner Telecom
 2386     1380        642         855   AT&T Data Communications Serv
11492     1211        145          55   Cable One 
 7011     1088        317         619   Citizens Utilities 
18566     1042        296          10   Covad Communications 
 1785     1005        479         107   AppliedTheory Corporation 
 6197      983        597         507   BellSouth Network Solutions, 
  174      969       6835         809   Cogent Communications
20115      923        876         512   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
 3292      402       1787         366   TDC Tele Danmark
 3301      338       1459         307   TeliaNet Sweden
 8452      329        188           7   TEDATA
 3320      326       7045         270   Deutsche Telekom AG
 5462      292        666          26   Telewest Broadband
 8866      292         78          24   Bulgarian Telecommunication C
 8551      281        269          37   Bezeq International
 3215      279       2679          89   France Telecom Transpac
 6746      267        127         244   Dynamic Network Technologies,
 8708      261        421         248   Romania Data Systems S.A.

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     1190       2448         220   UniNet S.A. de C.V. 
22047      557        270          14   VTR PUNTO NET S.A. 
11830      555        299           9   Instituto Costarricense de El
 7303      450        220          59   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
11172      411        117          70   Servicios Alestra S.A de C.V 
 6471      402         85          39   ENTEL CHILE S.A. 
10620      399        104          51   TVCABLE BOGOTA 
14117      383         25          15   Telefonica del Sur S.A. 
10481      310        152          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      463         61          27   LINKdotNET AS number
 3741      287        853         223   The Internet Solution 
20858      216         34           3   EgyNet
 2018      207        256         109   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      134          9          12   EEPAD TISP TELECOM & INTERNET
 5536      121          8          16   Internet Egypt Network
29571      118         13           8   Ci Telecom Autonomous system 
33776       99          6           7   Starcomms Nigeria Limited
24835       89         48           7   RAYA Telecom - Egypt

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     2476       3019         102   bellsouth.net, inc. 
23577     1634         34         699   Korea Telecom (ATM-MPLS)
 4755     1627        387          89   Videsh Sanchar Nigam Ltd. Aut
 7018     1443       5934        1022   AT&T WorldNet Services
 4323     1428       1029         376   Time Warner Telecom
 2386     1380        642         855   AT&T Data Communications Serv
11492     1211        145          55   Cable One 
 8151     1190       2448         220   UniNet S.A. de C.V. 
 9498     1162        550          60   BHARTI BT INTERNET LTD.
 9583     1157         99         211   Sify Limited

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

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

  ASN   No of nets  Net Savings Description
 4755      1627        1538      Videsh Sanchar Nigam Ltd. Aut
11492      1211        1156      Cable One 
 9498      1162        1102      BHARTI BT INTERNET LTD.
 4323      1428        1052      Time Warner Telecom
18566      1042        1032      Covad Communications 
 8151      1190         970      UniNet S.A. de C.V. 
17676      1016         951      Softbank BB Corp.
 9583      1157         946      Sify Limited
23577      1634         935      Korea Telecom (ATM-MPLS)
17488      1008         930      Hathway IP Over Cable Interne

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

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

Bad AS  Designation  Network              Transit AS  Description
14780   UNALLOCATED   4.79.181.0/24        10310       Yahoo! 
12180   UNALLOCATED   4.79.248.0/24         1239       Sprint 
12180   UNALLOCATED   8.10.16.0/24          3549       Global Crossing 
12180   UNALLOCATED   8.10.58.0/23          3549       Global Crossing 
14779   UNALLOCATED   8.12.144.0/24        10310       Yahoo! 
16927   UNALLOCATED   12.0.252.0/23         7018       AT&T WorldNet Servic
22492   UNALLOCATED   12.2.46.0/24          1239       Sprint 
15132   UNALLOCATED   12.9.150.0/24          701       UUNET Technologies, 
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications

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

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

Network            Origin AS  Description
24.51.159.0/24        7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.75.192.0/18        7843     Adelphia Corp. 
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
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
63.140.213.0/24      22555     Universal Talkware Corporatio

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        /8:20       /9:9       /10:16      /11:42      /12:138     
/13:280     /14:504     /15:1004    /16:9833    /17:4354    /18:7305    
/19:15325   /20:17696   /21:16964   /22:21534   /23:22504   /24:133061  
/25:793     /26:910     /27:487     /28:107     /29:9       /30:1       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1197          1211      Cable One 
 2386     1082          1380      AT&T Data Communications Serv
18566     1023          1042      Covad Communications 
 9583      995          1157      Sify Limited
 7011      970          1088      Citizens Utilities 
 4755      965          1627      Videsh Sanchar Nigam Ltd. Aut
 6478      905           906      AT&T Worldnet Services 
 9498      834          1162      BHARTI BT INTERNET LTD.
17488      820          1008      Hathway IP Over Cable Interne
 7018      815          1443      AT&T WorldNet Services

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

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

   4:9         8:106      12:1994     13:1        15:20       16:3      
  17:6        18:13       20:35       24:1055     25:1        32:60     
  33:4        38:411      40:94       41:633      44:2        47:8      
  52:3        55:3        56:3        57:22       58:513      59:451    
  60:405      61:982      62:1085     63:1956     64:3386     65:2371   
  66:3648     67:1132     68:679      69:2147     70:606      71:125    
  72:1659     73:6        74:933      75:225      76:286      77:629    
  78:568      79:142      80:902      81:820      82:601      83:368    
  84:564      85:986      86:398      87:650      88:320      89:1240   
  90:11       91:1167     92:247      93:275      96:23       97:16     
  98:132      99:3       116:597     117:282     118:113     119:383    
 120:7       121:489     122:745     123:314     124:840     125:1101   
 128:318     129:200     130:125     131:397     132:65      133:9      
 134:180     135:32      136:220     137:113     138:147     139:65     
 140:485     141:109     142:427     143:279     144:345     145:50     
 146:344     147:134     148:499     149:180     150:128     151:175    
 152:142     153:127     154:11      155:266     156:207     157:263    
 158:169     159:224     160:252     161:111     162:210     163:194    
 164:576     165:436     166:298     167:315     168:612     169:131    
 170:427     171:28      172:2       189:172     190:1740    192:5789   
 193:4108    194:3277    195:2390    196:1040    198:3781    199:3236   
 200:5579    201:1384    202:7576    203:7838    204:4009    205:2100   
 206:2390    207:2741    208:3255    209:3504    210:2540    211:1041   
 212:1343    213:1652    214:457     215:48      216:4278    217:1208   
 218:361     219:408     220:1067    221:397     222:311    

End of report




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