Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 27 13:08:39 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 28 Jun, 2008

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

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

BGP routing table entries examined:                              261031
    Prefixes after maximum aggregation:                          128186
    Deaggregation factor:                                          2.04
    Unique aggregates announced to Internet:                     127105
Total ASes present in the Internet Routing Table:                 28561
    Prefixes per ASN:                                              9.14
Origin-only ASes present in the Internet Routing Table:           24896
Origin ASes announcing only one prefix:                           12051
Transit ASes present in the Internet Routing Table:                3665
Transit-only ASes present in the Internet Routing Table:             80
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:               612
    Unregistered ASNs in the Routing Table:                         221
Number of 32-bit ASNs allocated by the RIRs:                         48
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:            778
Number of addresses announced to Internet:                   1864217696
    Equivalent to 111 /8s, 29 /16s and 180 /24s
    Percentage of available address space announced:               50.3
    Percentage of allocated address space announced:               61.1
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.4
Total number of prefixes smaller than registry allocations:      127006

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

Prefixes being announced by APNIC Region ASes:                    59718
    Total APNIC prefixes after maximum aggregation:               22124
    APNIC Deaggregation factor:                                    2.70
Prefixes being announced from the APNIC address blocks:           56731
    Unique aggregates announced from the APNIC address blocks:    25012
APNIC Region origin ASes present in the Internet Routing Table:    3284
    APNIC Prefixes per ASN:                                       17.27
APNIC Region origin ASes announcing only one prefix:                878
APNIC Region transit ASes present in the Internet Routing Table:    512
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              359769888
    Equivalent to 21 /8s, 113 /16s and 167 /24s
    Percentage of available APNIC address space announced:         76.6

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, 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:                    119970
    Total ARIN prefixes after maximum aggregation:                64949
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            89671
    Unique aggregates announced from the ARIN address blocks:     34705
ARIN Region origin ASes present in the Internet Routing Table:    12240
    ARIN Prefixes per ASN:                                         7.33
ARIN Region origin ASes announcing only one prefix:                4741
ARIN Region transit ASes present in the Internet Routing Table:    1144
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               353360032
    Equivalent to 21 /8s, 15 /16s and 216 /24s
    Percentage of available ARIN address space announced:          72.6

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:                     56335
    Total RIPE prefixes after maximum aggregation:                34205
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            51535
    Unique aggregates announced from the RIPE address blocks:     34513
RIPE Region origin ASes present in the Internet Routing Table:    11539
    RIPE Prefixes per ASN:                                         4.47
RIPE Region origin ASes announcing only one prefix:                6041
RIPE Region transit ASes present in the Internet Routing Table:    1742
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               361948800
    Equivalent to 21 /8s, 146 /16s and 230 /24s
    Percentage of available RIPE address space announced:          83.0

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:                   20337
    Total LACNIC prefixes after maximum aggregation:               5198
    LACNIC Deaggregation factor:                                   3.91
Prefixes being announced from the LACNIC address blocks:          18584
    Unique aggregates announced from the LACNIC address blocks:   10491
LACNIC Region origin ASes present in the Internet Routing Table:    960
    LACNIC Prefixes per ASN:                                      19.36
LACNIC Region origin ASes announcing only one prefix:               315
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:              52687360
    Equivalent to 3 /8s, 35 /16s and 242 /24s
    Percentage of available LACNIC address space announced:        52.3

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:                   4062
    Total AfriNIC prefixes after maximum aggregation:              1204
    AfriNIC Deaggregation factor:                                  3.37
Prefixes being announced from the AfriNIC address blocks:          4339
    Unique aggregates announced from the AfriNIC address blocks:   1880
AfriNIC Region origin ASes present in the Internet Routing Table:   240
    AfriNIC Prefixes per ASN:                                     18.08
AfriNIC Region origin ASes announcing only one prefix:               76
AfriNIC Region transit ASes present in the Internet Routing Table:   47
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12233216
    Equivalent to 0 /8s, 186 /16s and 170 /24s
    Percentage of available AfriNIC address space announced:       36.5

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     1668        387          90   Videsh Sanchar Nigam Ltd. Aut
17488     1188         82          91   Hathway IP Over Cable Interne
 9583     1163        111         420   Sify Limited
 9498     1078        550          62   BHARTI BT INTERNET LTD.
 4766      846       6006         343   Korea Telecom (KIX)
 4134      829      12995         328   CHINANET-BACKBONE
23577      824         35         704   Korea Telecom (ATM-MPLS)
 4780      704        351          63   Digital United Inc.
18101      688        167          35   Reliance Infocom Ltd Internet
 9829      598        450          12   BSNL National Internet Backbo

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
  209     3013       3874         622   Qwest 
 6389     2671       3260         199   bellsouth.net, inc. 
 2386     1496        663         877   AT&T Data Communications Serv
 4323     1469       1044         376   Time Warner Telecom
 7018     1395       5822         976   AT&T WorldNet Services
11492     1231        150          12   Cable One 
 1785     1080        510         104   AppliedTheory Corporation 
20115     1048       1068         561   Charter Communications 
18566     1045        296          10   Covad Communications 
 7011     1015        287         554   Citizens Utilities 

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      414       1788         372   TDC Tele Danmark
 8452      344        188          11   TEDATA
 3301      335       1460         305   TeliaNet Sweden
 3320      319       7046         268   Deutsche Telekom AG
 8866      319         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      287        269          38   Bezeq International
 3215      286       2742          89   France Telecom Transpac
  680      274       2047         264   DFN-IP service G-WiN
 6746      268        126         243   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     1273       2464         227   UniNet S.A. de C.V. 
11830      604        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      469        231          65   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      411         85          48   ENTEL CHILE S.A. 
11172      408        118          70   Servicios Alestra S.A de C.V 
10620      397        101          68   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      334         23          98   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      475         61          30   LINKdotNET AS number
20858      397         34           3   EgyNet
 3741      273        853         224   The Internet Solution 
 2018      201        205          85   Tertiary Education Network 
 5713      156        558          94   Telkom SA Ltd 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      133          9          17   EEPAD TISP TELECOM & INTERNET
 5536      121          8          16   Internet Egypt Network
29571      102         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
  209     3013       3874         622   Qwest 
 6389     2671       3260         199   bellsouth.net, inc. 
 4755     1668        387          90   Videsh Sanchar Nigam Ltd. Aut
 2386     1496        663         877   AT&T Data Communications Serv
 4323     1469       1044         376   Time Warner Telecom
 7018     1395       5822         976   AT&T WorldNet Services
 8151     1273       2464         227   UniNet S.A. de C.V. 
11492     1231        150          12   Cable One 
17488     1188         82          91   Hathway IP Over Cable Interne
 9583     1163        111         420   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
 6389      2671        2472      bellsouth.net, inc. 
 4755      1668        1578      Videsh Sanchar Nigam Ltd. Aut
11492      1231        1219      Cable One 
17488      1188        1097      Hathway IP Over Cable Interne
 4323      1469        1093      Time Warner Telecom
 8151      1273        1046      UniNet S.A. de C.V. 
18566      1045        1035      Covad Communications 
 9498      1078        1016      BHARTI BT INTERNET LTD.
 1785      1080         976      AppliedTheory Corporation 
22773       966         904      Cox Communications, Inc.

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
24.48.244.0/23        7843     Adelphia Corp. 
24.51.159.0/24        7843     Adelphia Corp. 
24.54.23.0/24         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

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        /8:18       /9:9       /10:16      /11:44      /12:143     
/13:281     /14:514     /15:1037    /16:9958    /17:4325    /18:7368    
/19:15727   /20:18361   /21:17999   /22:22360   /23:23307   /24:136792  
/25:859     /26:1032    /27:783     /28:81      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
  209     1769          3013      Qwest 
 6389     1670          2671      bellsouth.net, inc. 
11492     1211          1231      Cable One 
 2386     1191          1496      AT&T Data Communications Serv
18566     1026          1045      Covad Communications 
 9583     1013          1163      Sify Limited
 4755     1009          1668      Videsh Sanchar Nigam Ltd. Aut
17488     1002          1188      Hathway IP Over Cable Interne
 6298      976           991      Cox Communicatons 
 6478      947           956      AT&T Worldnet Services 

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

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

   4:7         8:118      12:2060     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1071     25:1        32:62     
  38:446      40:92       41:651      43:1        44:2        47:6      
  52:3        55:3        56:3        57:24       58:501      59:501    
  60:448      61:1001     62:1188     63:2031     64:3288     65:2386   
  66:3533     67:1229     68:694      69:2278     70:681      71:121    
  72:1821     73:5        74:1028     75:159      76:299      77:738    
  78:710      79:199      80:950      81:848      82:612      83:393    
  84:577      85:1024     86:417      87:701      88:335      89:1285   
  90:14       91:1301     92:205      93:590      94:52       96:37     
  97:27       98:168      99:3       112:1       113:1       114:58     
 116:762     117:329     118:182     119:446     120:49      121:554    
 122:793     123:360     124:858     125:1153    128:362     129:202    
 130:131     131:409     132:67      133:9       134:177     135:33     
 136:220     137:87      138:145     139:93      140:489     141:99     
 142:415     143:311     144:365     145:51      146:364     147:154    
 148:511     149:197     150:120     151:191     152:131     153:136    
 154:10      155:277     156:174     157:277     158:186     159:240    
 160:276     161:114     162:239     163:187     164:523     165:449    
 166:319     167:327     168:620     169:136     170:428     171:30     
 172:10      189:242     190:2141    192:5787    193:4104    194:3221   
 195:2511    196:1048    198:3730    199:3274    200:5545    201:1456   
 202:7622    203:8020    204:3970    205:2131    206:2391    207:2772   
 208:3388    209:3520    210:2571    211:1051    212:1430    213:1631   
 214:148     215:49      216:4396    217:1199    218:339     219:412    
 220:1068    221:471     222:309    

End of report




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