[AusNOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Sat Mar 1 05:07:12 EST 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 01 Mar, 2008

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

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

BGP routing table entries examined:                              247820
    Prefixes after maximum aggregation:                          125222
    Deaggregation factor:                                          1.98
    Unique aggregates announced to Internet:                     119811
Total ASes present in the Internet Routing Table:                 27500
    Prefixes per ASN:                                              9.01
Origin-only ASes present in the Internet Routing Table:           23968
Origin ASes announcing only one prefix:                           11633
Transit ASes present in the Internet Routing Table:                3532
Transit-only ASes present in the Internet Routing Table:             73
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:                40
    Unregistered ASNs in the Routing Table:                          13
Number of 32-bit ASNs allocated by the RIRs:                         45
Prefixes from 32-bit ASNs in the Routing Table:                       8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            880
Number of addresses announced to Internet:                   1856621888
    Equivalent to 110 /8s, 169 /16s and 205 /24s
    Percentage of available address space announced:               50.1
    Percentage of allocated address space announced:               61.5
    Percentage of available address space allocated:               81.4
    Percentage of address space in use by end-sites:               70.7
Total number of prefixes smaller than registry allocations:      117515

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

Prefixes being announced by APNIC Region ASes:                    56616
    Total APNIC prefixes after maximum aggregation:               20833
    APNIC Deaggregation factor:                                    2.72
Prefixes being announced from the APNIC address blocks:           54100
    Unique aggregates announced from the APNIC address blocks:    22940
APNIC Region origin ASes present in the Internet Routing Table:    3136
    APNIC Prefixes per ASN:                                       17.25
APNIC Region origin ASes announcing only one prefix:                829
APNIC Region transit ASes present in the Internet Routing Table:    484
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              334493120
    Equivalent to 19 /8s, 239 /16s and 245 /24s
    Percentage of available APNIC address space announced:         76.7

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:                    116201
    Total ARIN prefixes after maximum aggregation:                65550
    ARIN Deaggregation factor:                                     1.77
Prefixes being announced from the ARIN address blocks:            84871
    Unique aggregates announced from the ARIN address blocks:     33344
ARIN Region origin ASes present in the Internet Routing Table:    12180
    ARIN Prefixes per ASN:                                         6.97
ARIN Region origin ASes announcing only one prefix:                4702
ARIN Region transit ASes present in the Internet Routing Table:    1145
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               356351360
    Equivalent to 21 /8s, 61 /16s and 125 /24s
    Percentage of available ARIN address space announced:          73.2

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:                     52569
    Total RIPE prefixes after maximum aggregation:                32936
    RIPE Deaggregation factor:                                     1.60
Prefixes being announced from the RIPE address blocks:            47679
    Unique aggregates announced from the RIPE address blocks:     32111
RIPE Region origin ASes present in the Internet Routing Table:    10970
    RIPE Prefixes per ASN:                                         4.35
RIPE Region origin ASes announcing only one prefix:                5727
RIPE Region transit ASes present in the Internet Routing Table:    1673
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               346859264
    Equivalent to 20 /8s, 172 /16s and 167 /24s
    Percentage of available RIPE address space announced:          79.5

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:                   18826
    Total LACNIC prefixes after maximum aggregation:               4763
    LACNIC Deaggregation factor:                                   3.95
Prefixes being announced from the LACNIC address blocks:          17209
    Unique aggregates announced from the LACNIC address blocks:    9367
LACNIC Region origin ASes present in the Internet Routing Table:    910
    LACNIC Prefixes per ASN:                                      18.91
LACNIC Region origin ASes announcing only one prefix:               300
LACNIC Region transit ASes present in the Internet Routing Table:   155
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              48766464
    Equivalent to 2 /8s, 232 /16s and 30 /24s
    Percentage of available LACNIC address space announced:        48.4

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:                   3565
    Total AfriNIC prefixes after maximum aggregation:              1124
    AfriNIC Deaggregation factor:                                  3.17
Prefixes being announced from the AfriNIC address blocks:          4000
    Unique aggregates announced from the AfriNIC address blocks:   1807
AfriNIC Region origin ASes present in the Internet Routing Table:   230
    AfriNIC Prefixes per ASN:                                     17.39
AfriNIC Region origin ASes announcing only one prefix:               75
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:             10019328
    Equivalent to 0 /8s, 152 /16s and 226 /24s
    Percentage of available AfriNIC address space announced:       29.9

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     1586        386          81   Videsh Sanchar Nigam Ltd. Aut
 9583     1152        109          24   Sify Limited
 9498     1145        550          63   BHARTI BT INTERNET LTD.
17488      992         64          89   Hathway IP Over Cable Interne
 4134      853      12363         314   CHINANET-BACKBONE
 4766      843       6005         338   Korea Telecom (KIX)
23577      812         34         696   Korea Telecom (ATM-MPLS)
18101      709        127          62   Reliance Infocom Ltd Internet
 9829      595        449          11   BSNL National Internet Backbo
 4812      558        949          89   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     1421       5990         985   AT&T WorldNet Services
 4323     1381       1011         366   Time Warner Telecom
 2386     1379        638         839   AT&T Data Communications Serv
11492     1211        144          26   Cable One 
 7011     1059        308         611   Citizens Utilities 
18566     1042        296          10   Covad Communications 
 6197      995        729         475   BellSouth Network Solutions, 
  174      987       6835         816   Cogent Communications
 6478      929        237         113   AT&T Worldnet Services 
20115      890        810         486   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      398       1778         363   TDC Tele Danmark
 8452      395        188           7   TEDATA
 3301      336       1443         306   TeliaNet Sweden
 3320      325       7045         269   Deutsche Telekom AG
 8866      291         78          24   Bulgarian Telecommunication C
 8551      279        267          42   Bezeq International
  680      276       2046         256   DFN-IP service G-WiN
 5462      275        666          26   Telewest Broadband
 8708      275        421         245   Romania Data Systems S.A.
 3215      271       2607          94   France Telecom Transpac

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     1171       2437         220   UniNet S.A. de C.V. 
11830      555        299           9   Instituto Costarricense de El
 7303      446        216          57   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
11172      400        115          66   Servicios Alestra S.A de C.V 
 6471      399         85          40   ENTEL CHILE S.A. 
10620      366         96          49   TVCABLE BOGOTA 
14117      352         25          15   Telefonica del Sur S.A. 
10481      330        124          10   Prima S.A. 
22047      323        270          14   VTR PUNTO NET 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      444         60          27   LINKdotNET AS number
 3741      288        869         224   The Internet Solution 
 2018      246        276         111   Tertiary Education Network 
20858      217         34           4   EgyNet
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      130          9          16   EEPAD TISP TELECOM & INTERNET
 5536      121          8          16   Internet Egypt Network
33776       99          6           7   Starcomms Nigeria Limited
24835       90         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     1586        386          81   Videsh Sanchar Nigam Ltd. Aut
 7018     1421       5990         985   AT&T WorldNet Services
 4323     1381       1011         366   Time Warner Telecom
 2386     1379        638         839   AT&T Data Communications Serv
11492     1211        144          26   Cable One 
 8151     1171       2437         220   UniNet S.A. de C.V. 
 9583     1152        109          24   Sify Limited
 9498     1145        550          63   BHARTI BT INTERNET LTD.
 7011     1059        308         611   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      1211        1185      Cable One 
 9583      1152        1128      Sify Limited
 9498      1145        1082      BHARTI BT INTERNET LTD.
18566      1042        1032      Covad Communications 
 4323      1381        1015      Time Warner Telecom
 8151      1171         951      UniNet S.A. de C.V. 
17488       992         903      Hathway IP Over Cable Interne
22773       882         817      Cox Communications, Inc.
 6478       929         816      AT&T Worldnet Services 
 6389       886         802      bellsouth.net, inc. 

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

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

Bad AS  Designation  Network              Transit AS  Description
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
65000   PRIVATE       78.108.160.0/24      39010       TerraNet sal
65000   PRIVATE       78.108.163.0/24      39010       TerraNet sal
65000   PRIVATE       78.108.164.0/24      39010       TerraNet sal
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

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
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      /11:39      /12:138     
/13:276     /14:496     /15:988     /16:9764    /17:4262    /18:7157    
/19:15189   /20:17339   /21:16533   /22:20938   /23:22066   /24:129885  
/25:892     /26:1119    /27:568     /28:108     /29:9       /30:1       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1198          1211      Cable One 
 2386     1085          1379      AT&T Data Communications Serv
18566     1023          1042      Covad Communications 
 9583      988          1152      Sify Limited
 7011      942          1059      Citizens Utilities 
 4755      937          1586      Videsh Sanchar Nigam Ltd. Aut
 6478      928           929      AT&T Worldnet Services 
 9498      809          1145      BHARTI BT INTERNET LTD.
17488      807           992      Hathway IP Over Cable Interne
23577      803           812      Korea Telecom (ATM-MPLS)

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

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

   4:9         8:101      12:1989     13:2        15:21       16:3      
  17:6        18:13       20:35       24:1032     25:1        31:1      
  32:61       33:4        38:396      40:65       41:613      44:2      
  47:8        52:3        55:3        56:3        57:22       58:521    
  59:427      60:407      61:984      62:1088     63:1958     64:3366   
  65:2378     66:3661     67:1146     68:632      69:2121     70:487    
  71:123      72:1483     73:6        74:852      75:236      76:257    
  77:565      78:503      79:86       80:886      81:815      82:596    
  83:354      84:532      85:987      86:388      87:625      88:299    
  89:1175     90:12       91:1052     92:138      93:95       95:2      
  96:16       97:14       98:86       99:3       114:1       115:1      
 116:530     117:272     118:77      119:160     121:402     122:712    
 123:294     124:812     125:1102    128:321     129:199     130:132    
 131:400     132:67      133:9       134:188     135:37      136:221    
 137:118     138:153     139:63      140:486     141:108     142:377    
 143:271     144:338     145:53      146:336     147:131     148:481    
 149:178     150:124     151:149     152:92      153:131     154:11     
 155:267     156:202     157:250     158:164     159:218     160:249    
 161:101     162:204     163:195     164:561     165:426     166:295    
 167:308     168:588     169:133     170:425     171:28      172:3      
 189:159     190:1406    192:5762    193:4104    194:3260    195:2334   
 196:1081    198:3790    199:3197    200:5467    201:1297    202:7566   
 203:7792    204:3967    205:2080    206:2402    207:2728    208:3174   
 209:3561    210:2539    211:1031    212:1293    213:1582    214:446    
 215:48      216:4161    217:1202    218:338     219:399     220:1098   
 221:403     222:309    

End of report



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