Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 13 13:08:03 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 14 Jun, 2008

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

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

BGP routing table entries examined:                              259901
    Prefixes after maximum aggregation:                          128080
    Deaggregation factor:                                          2.03
    Unique aggregates announced to Internet:                     126786
Total ASes present in the Internet Routing Table:                 28442
    Prefixes per ASN:                                              9.14
Origin-only ASes present in the Internet Routing Table:           24790
Origin ASes announcing only one prefix:                           11978
Transit ASes present in the Internet Routing Table:                3652
Transit-only ASes present in the Internet Routing Table:             78
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:                         229
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:            780
Number of addresses announced to Internet:                   1858706912
    Equivalent to 110 /8s, 201 /16s and 157 /24s
    Percentage of available address space announced:               50.1
    Percentage of allocated address space announced:               60.9
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.2
Total number of prefixes smaller than registry allocations:      126226

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

Prefixes being announced by APNIC Region ASes:                    59132
    Total APNIC prefixes after maximum aggregation:               22129
    APNIC Deaggregation factor:                                    2.67
Prefixes being announced from the APNIC address blocks:           56160
    Unique aggregates announced from the APNIC address blocks:    25128
APNIC Region origin ASes present in the Internet Routing Table:    3275
    APNIC Prefixes per ASN:                                       17.15
APNIC Region origin ASes announcing only one prefix:                869
APNIC Region transit ASes present in the Internet Routing Table:    508
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              352137632
    Equivalent to 20 /8s, 253 /16s and 49 /24s
    Percentage of available APNIC address space announced:         75.0

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:                    120109
    Total ARIN prefixes after maximum aggregation:                65072
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            89906
    Unique aggregates announced from the ARIN address blocks:     34679
ARIN Region origin ASes present in the Internet Routing Table:    12213
    ARIN Prefixes per ASN:                                         7.36
ARIN Region origin ASes announcing only one prefix:                4736
ARIN Region transit ASes present in the Internet Routing Table:    1147
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               356411552
    Equivalent to 21 /8s, 62 /16s and 104 /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:                     55926
    Total RIPE prefixes after maximum aggregation:                34008
    RIPE Deaggregation factor:                                     1.64
Prefixes being announced from the RIPE address blocks:            51103
    Unique aggregates announced from the RIPE address blocks:     34277
RIPE Region origin ASes present in the Internet Routing Table:    11456
    RIPE Prefixes per ASN:                                         4.46
RIPE Region origin ASes announcing only one prefix:                5988
RIPE Region transit ASes present in the Internet Routing Table:    1725
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               360988032
    Equivalent to 21 /8s, 132 /16s and 61 /24s
    Percentage of available RIPE address space announced:          82.8

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:                   20218
    Total LACNIC prefixes after maximum aggregation:               5155
    LACNIC Deaggregation factor:                                   3.92
Prefixes being announced from the LACNIC address blocks:          18456
    Unique aggregates announced from the LACNIC address blocks:   10363
LACNIC Region origin ASes present in the Internet Routing Table:    954
    LACNIC Prefixes per ASN:                                      19.35
LACNIC Region origin ASes announcing only one prefix:               305
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:              52287232
    Equivalent to 3 /8s, 29 /16s and 215 /24s
    Percentage of available LACNIC address space announced:        51.9

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:                   3895
    Total AfriNIC prefixes after maximum aggregation:              1200
    AfriNIC Deaggregation factor:                                  3.25
Prefixes being announced from the AfriNIC address blocks:          4168
    Unique aggregates announced from the AfriNIC address blocks:   1875
AfriNIC Region origin ASes present in the Internet Routing Table:   243
    AfriNIC Prefixes per ASN:                                     17.15
AfriNIC Region origin ASes announcing only one prefix:               80
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:                       14
Number of AfriNIC addresses announced to Internet:             12316160
    Equivalent to 0 /8s, 187 /16s and 238 /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     1618        387          89   Videsh Sanchar Nigam Ltd. Aut
 9498     1181        550          62   BHARTI BT INTERNET LTD.
17488     1120         78          76   Hathway IP Over Cable Interne
 9583     1116        110         450   Sify Limited
 4766      850       6006         343   Korea Telecom (KIX)
 4134      824      12915         321   CHINANET-BACKBONE
23577      820         34         702   Korea Telecom (ATM-MPLS)
18101      693        167          36   Reliance Infocom Ltd Internet
 9829      598        450          12   BSNL National Internet Backbo
 1221      550       1919         423   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
  209     3009       3874         620   Qwest 
 6389     2355       3138         188   bellsouth.net, inc. 
 4323     1469       1045         378   Time Warner Telecom
 2386     1453        660         875   AT&T Data Communications Serv
 7018     1370       5810         980   AT&T WorldNet Services
11492     1228        148          12   Cable One 
 1785     1066        510         105   AppliedTheory Corporation 
18566     1044        296          10   Covad Communications 
20115     1040       1062         564   Charter Communications 
 7011     1034        289         569   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      412       1772         371   TDC Tele Danmark
 8452      347        188           7   TEDATA
 3301      338       1460         308   TeliaNet Sweden
 8866      319         77          21   Bulgarian Telecommunication C
 3320      315       7045         265   Deutsche Telekom AG
 3215      285       2742          89   France Telecom Transpac
 8551      283        269          38   Bezeq International
 5462      275        666          27   Telewest Broadband
  680      274       2047         264   DFN-IP service G-WiN
 9155      268         45          10   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     1245       2464         227   UniNet S.A. de C.V. 
11830      603        299           9   Instituto Costarricense de El
22047      566        270          14   VTR PUNTO NET S.A. 
 7303      468        229          66   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      413         85          46   ENTEL CHILE S.A. 
11172      411        118          69   Servicios Alestra S.A de C.V 
10620      392        100          71   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      340         24          92   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
 3741      282        853         223   The Internet Solution 
20858      220         34           3   EgyNet
 2018      192        189          82   Tertiary Education Network 
 5713      163        558          99   Telkom SA Ltd 
 6713      143        135          11   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
  209     3009       3874         620   Qwest 
 6389     2355       3138         188   bellsouth.net, inc. 
 4755     1618        387          89   Videsh Sanchar Nigam Ltd. Aut
 4323     1469       1045         378   Time Warner Telecom
 2386     1453        660         875   AT&T Data Communications Serv
 7018     1370       5810         980   AT&T WorldNet Services
 8151     1245       2464         227   UniNet S.A. de C.V. 
11492     1228        148          12   Cable One 
 9498     1181        550          62   BHARTI BT INTERNET LTD.
17488     1120         78          76   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
 6389      2355        2167      bellsouth.net, inc. 
 4755      1618        1529      Videsh Sanchar Nigam Ltd. Aut
11492      1228        1216      Cable One 
 9498      1181        1119      BHARTI BT INTERNET LTD.
 4323      1469        1091      Time Warner Telecom
17488      1120        1044      Hathway IP Over Cable Interne
18566      1044        1034      Covad Communications 
 8151      1245        1018      UniNet S.A. de C.V. 
 1785      1066         961      AppliedTheory Corporation 
22773       957         895      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
24.51.159.0/24        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        /8:18       /9:9       /10:16      /11:42      /12:142     
/13:279     /14:514     /15:1028    /16:9958    /17:4337    /18:7359    
/19:15676   /20:18305   /21:17924   /22:22319   /23:23253   /24:135965  
/25:841     /26:1035    /27:782     /28:81      /29:10      /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
  209     1764          3009      Qwest 
 6389     1452          2355      bellsouth.net, inc. 
11492     1210          1228      Cable One 
 2386     1150          1453      AT&T Data Communications Serv
18566     1025          1044      Covad Communications 
 4755      973          1618      Videsh Sanchar Nigam Ltd. Aut
 9583      971          1116      Sify Limited
 6298      946           961      Cox Communicatons 
 6478      941           942      AT&T Worldnet Services 
17488      932          1120      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         8:114      12:2049     13:1        15:22       16:3      
  17:5        18:13       20:35       24:1075     25:1        32:61     
  33:3        38:440      40:92       41:645      43:1        44:2      
  47:12       52:3        55:4        56:3        57:23       58:458    
  59:475      60:443      61:991      62:1100     63:2030     64:3275   
  65:2419     66:3636     67:1211     68:695      69:2273     70:679    
  71:126      72:1815     73:5        74:1002     75:220      76:299    
  77:727      78:706      79:194      80:914      81:849      82:563    
  83:392      84:565      85:1011     86:422      87:694      88:313    
  89:1257     90:12       91:1267     92:186      93:574      94:16     
  96:34       97:23       98:200      99:3       100:1       111:1      
 112:1       113:1       114:34      116:695     117:326     118:143    
 119:460     120:59      121:525     122:781     123:346     124:850    
 125:1137    128:331     129:204     130:130     131:401     132:67     
 133:9       134:177     135:33      136:218     137:91      138:151    
 139:78      140:498     141:99      142:403     143:335     144:356    
 145:51      146:363     147:154     148:505     149:191     150:130    
 151:193     152:143     153:136     154:10      155:273     156:174    
 157:273     158:168     159:239     160:266     161:105     162:232    
 163:184     164:530     165:447     166:316     167:328     168:615    
 169:138     170:429     171:29      172:10      189:196     190:2103   
 192:5792    193:4094    194:3200    195:2488    196:1065    198:3740   
 199:3273    200:5541    201:1441    202:7631    203:7925    204:3986   
 205:2122    206:2412    207:2795    208:3365    209:3477    210:2520   
 211:1018    212:1399    213:1662    214:163     215:48      216:4426   
 217:1196    218:348     219:416     220:1083    221:469     222:308    


End of report




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