Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 6 13:07:32 CDT 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 07 Jun, 2008

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

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

BGP routing table entries examined:                              257029
    Prefixes after maximum aggregation:                          127846
    Deaggregation factor:                                          2.01
    Unique aggregates announced to Internet:                     126093
Total ASes present in the Internet Routing Table:                 28361
    Prefixes per ASN:                                              9.06
Origin-only ASes present in the Internet Routing Table:           24725
Origin ASes announcing only one prefix:                           11924
Transit ASes present in the Internet Routing Table:                3636
Transit-only ASes present in the Internet Routing Table:             77
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      18
    Max AS path prepend of ASN (43380)                               13
Prefixes from unregistered ASNs in the Routing Table:               623
    Unregistered ASNs in the Routing Table:                         231
Number of 32-bit ASNs allocated by the RIRs:                         49
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:            783
Number of addresses announced to Internet:                   1875474272
    Equivalent to 111 /8s, 201 /16s and 119 /24s
    Percentage of available address space announced:               50.6
    Percentage of allocated address space announced:               61.4
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.1
Total number of prefixes smaller than registry allocations:      124322

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

Prefixes being announced by APNIC Region ASes:                    58989
    Total APNIC prefixes after maximum aggregation:               22099
    APNIC Deaggregation factor:                                    2.67
Prefixes being announced from the APNIC address blocks:           55995
    Unique aggregates announced from the APNIC address blocks:    24955
APNIC Region origin ASes present in the Internet Routing Table:    3265
    APNIC Prefixes per ASN:                                       17.15
APNIC Region origin ASes announcing only one prefix:                858
APNIC Region transit ASes present in the Internet Routing Table:    505
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              351681440
    Equivalent to 20 /8s, 246 /16s and 59 /24s
    Percentage of available APNIC address space announced:         74.9

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, 112/8, 113/8, 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:                    117708
    Total ARIN prefixes after maximum aggregation:                64961
    ARIN Deaggregation factor:                                     1.81
Prefixes being announced from the ARIN address blocks:            87645
    Unique aggregates announced from the ARIN address blocks:     34442
ARIN Region origin ASes present in the Internet Routing Table:    12183
    ARIN Prefixes per ASN:                                         7.19
ARIN Region origin ASes announcing only one prefix:                4716
ARIN Region transit ASes present in the Internet Routing Table:    1133
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               356844800
    Equivalent to 21 /8s, 69 /16s and 5 /24s
    Percentage of available ARIN address space announced:          73.3

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, 46080-47103
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:                     55629
    Total RIPE prefixes after maximum aggregation:                33945
    RIPE Deaggregation factor:                                     1.64
Prefixes being announced from the RIPE address blocks:            50825
    Unique aggregates announced from the RIPE address blocks:     34021
RIPE Region origin ASes present in the Internet Routing Table:    11418
    RIPE Prefixes per ASN:                                         4.45
RIPE Region origin ASes announcing only one prefix:                5965
RIPE Region transit ASes present in the Internet Routing Table:    1730
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               360492160
    Equivalent to 21 /8s, 124 /16s and 172 /24s
    Percentage of available RIPE address space announced:          82.6

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, 47104-48127
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:                   20191
    Total LACNIC prefixes after maximum aggregation:               5129
    LACNIC Deaggregation factor:                                   3.94
Prefixes being announced from the LACNIC address blocks:          18426
    Unique aggregates announced from the LACNIC address blocks:   10351
LACNIC Region origin ASes present in the Internet Routing Table:    953
    LACNIC Prefixes per ASN:                                      19.33
LACNIC Region origin ASes announcing only one prefix:               306
LACNIC Region transit ASes present in the Internet Routing Table:   160
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        15
Number of LACNIC addresses announced to Internet:              52306304
    Equivalent to 3 /8s, 30 /16s and 33 /24s
    Percentage of available LACNIC address space announced:        52.0

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:                   3890
    Total AfriNIC prefixes after maximum aggregation:              1194
    AfriNIC Deaggregation factor:                                  3.26
Prefixes being announced from the AfriNIC address blocks:          4136
    Unique aggregates announced from the AfriNIC address blocks:   1862
AfriNIC Region origin ASes present in the Internet Routing Table:   241
    AfriNIC Prefixes per ASN:                                     17.16
AfriNIC Region origin ASes announcing only one prefix:               79
AfriNIC Region transit ASes present in the Internet Routing Table:   48
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12314112
    Equivalent to 0 /8s, 187 /16s and 230 /24s
    Percentage of available AfriNIC address space announced:       36.7

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     1642        387          89   Videsh Sanchar Nigam Ltd. Aut
 9498     1174        550          61   BHARTI BT INTERNET LTD.
 9583     1112        111         412   Sify Limited
17488     1078         71          94   Hathway IP Over Cable Interne
 4766      849       6006         343   Korea Telecom (KIX)
 4134      826      12917         324   CHINANET-BACKBONE
23577      817         34         700   Korea Telecom (ATM-MPLS)
18101      691        167          36   Reliance Infocom Ltd Internet
 9829      598        450          12   BSNL National Internet Backbo
 1221      549       1919         422   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
 6389     2208       3103         182   bellsouth.net, inc. 
 4323     1471       1045         377   Time Warner Telecom
 2386     1439        658         872   AT&T Data Communications Serv
 7018     1372       5815         981   AT&T WorldNet Services
11492     1228        148          12   Cable One 
 7011     1051        291         584   Citizens Utilities 
18566     1044        296          10   Covad Communications 
20115     1039       1062         563   Charter Communications 
 1785     1028        510         105   AppliedTheory Corporation 
  174      979       6837         805   Cogent 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      410       1772         369   TDC Tele Danmark
 3301      338       1460         308   TeliaNet Sweden
 8452      327        188           7   TEDATA
 3320      316       7043         265   Deutsche Telekom AG
 8866      311         77          21   Bulgarian Telecommunication C
 5462      291        666          26   Telewest Broadband
 3215      287       2742          91   France Telecom Transpac
 8551      283        269          38   Bezeq International
  680      274       2047         264   DFN-IP service G-WiN
 9155      271         46          11   QualityNet AS number

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     1238       2464         227   UniNet S.A. de C.V. 
11830      603        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      466        229          66   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      413         85          46   ENTEL CHILE S.A. 
11172      412        118          69   Servicios Alestra S.A de C.V 
10620      383         98          79   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      338         23          89   NEWCOM AMERICAS 

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      472         61          28   LINKdotNET AS number
 3741      282        853         223   The Internet Solution 
20858      224         34           3   EgyNet
 2018      191        189          82   Tertiary Education Network 
 5713      163        558          99   Telkom SA Ltd 
 6713      145        136          12   Itissalat Al-MAGHRIB
33783      134         10          12   EEPAD TISP TELECOM & INTERNET
 5536      121          8          16   Internet Egypt Network
29571      103         13           8   Ci Telecom Autonomous system 
33776      100          6           3   Starcomms Nigeria Limited

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     2208       3103         182   bellsouth.net, inc. 
 4755     1642        387          89   Videsh Sanchar Nigam Ltd. Aut
 4323     1471       1045         377   Time Warner Telecom
 2386     1439        658         872   AT&T Data Communications Serv
 7018     1372       5815         981   AT&T WorldNet Services
 8151     1238       2464         227   UniNet S.A. de C.V. 
11492     1228        148          12   Cable One 
 9498     1174        550          61   BHARTI BT INTERNET LTD.
 9583     1112        111         412   Sify Limited
17488     1078         71          94   Hathway IP Over Cable Interne

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

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

  ASN   No of nets  Net Savings Description
 4755      1642        1553      Videsh Sanchar Nigam Ltd. Aut
11492      1228        1216      Cable One 
 9498      1174        1113      BHARTI BT INTERNET LTD.
 4323      1471        1094      Time Warner Telecom
18566      1044        1034      Covad Communications 
 8151      1238        1011      UniNet S.A. de C.V. 
17488      1078         984      Hathway IP Over Cable Interne
 1785      1028         923      AppliedTheory Corporation 
22773       946         884      Cox Communications, Inc.
 6478       951         799      AT&T Worldnet Services 

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

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

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED   12.0.252.0/23          701       UUNET Technologies, 
22492   UNALLOCATED   12.2.46.0/24          7018       AT&T WorldNet Servic
15132   UNALLOCATED   12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.31.25.0/24         6517       Yipes Communications
27220   UNALLOCATED   12.35.204.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic

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        /8:19       /9:9       /10:16      /11:42      /12:142     
/13:279     /14:514     /15:1027    /16:9940    /17:4313    /18:7286    
/19:15460   /20:17926   /21:17392   /22:21972   /23:22960   /24:135388  
/25:805     /26:951     /27:488     /28:81      /29:9       /30:1       
/31:0       /32:9       

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

  ASN   No of nets  Total ann.   Description
 6389     1356          2208      bellsouth.net, inc. 
11492     1210          1228      Cable One 
 2386     1137          1439      AT&T Data Communications Serv
18566     1025          1044      Covad Communications 
 4755      989          1642      Videsh Sanchar Nigam Ltd. Aut
 9583      966          1112      Sify Limited
 6478      950           951      AT&T Worldnet Services 
 7011      943          1051      Citizens Utilities 
 6298      941           956      Cox Communicatons 
17488      904          1078      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         8:109      12:2058     13:1        15:22       16:3      
  17:5        18:13       20:35       24:1077     25:1        32:62     
  33:3        38:436      40:93       41:642      43:1        44:2      
  47:12       52:3        55:4        56:3        57:23       58:514    
  59:478      60:442      61:996      62:1116     63:1946     64:3324   
  65:2424     66:3692     67:1209     68:695      69:2245     70:676    
  71:126      72:1815     73:5        74:994      75:220      76:297    
  77:704      78:696      79:187      80:909      81:843      82:569    
  83:390      84:568      85:1019     86:421      87:677      88:314    
  89:1251     90:11       91:1283     92:180      93:517      96:32     
  97:23       98:191      99:3       111:1       114:20      116:661    
 117:327     118:141     119:445     120:57      121:532     122:780    
 123:340     124:847     125:1139    128:324     129:202     130:131    
 131:402     132:66      133:9       134:177     135:33      136:219    
 137:91      138:152     139:71      140:497     141:99      142:401    
 143:324     144:351     145:51      146:364     147:153     148:506    
 149:191     150:130     151:193     152:141     153:135     154:10     
 155:249     156:174     157:272     158:168     159:221     160:256    
 161:114     162:231     163:187     164:525     165:446     166:317    
 167:328     168:612     169:131     170:428     171:29      172:10     
 189:189     190:2068    192:5804    193:4100    194:3209    195:2464   
 196:1071    198:3748    199:3259    200:5577    201:1420    202:7617   
 203:7893    204:3973    205:2087    206:2397    207:2749    208:3353   
 209:3441    210:2520    211:1023    212:1393    213:1623    214:164    
 215:49      216:4372    217:1188    218:346     219:414     220:1077   
 221:464     222:306    

End of report




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