[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 30 18:07:13 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 31 May, 2008

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

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

BGP routing table entries examined:                              256681
    Prefixes after maximum aggregation:                          127966
    Deaggregation factor:                                          2.01
    Unique aggregates announced to Internet:                     125823
Total ASes present in the Internet Routing Table:                 28326
    Prefixes per ASN:                                              9.06
Origin-only ASes present in the Internet Routing Table:           24711
Origin ASes announcing only one prefix:                           11900
Transit ASes present in the Internet Routing Table:                3615
Transit-only ASes present in the Internet Routing Table:             74
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:               626
    Unregistered ASNs in the Routing Table:                         236
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:            782
Number of addresses announced to Internet:                   1874228320
    Equivalent to 111 /8s, 182 /16s and 116 /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:               72.0
Total number of prefixes smaller than registry allocations:      123722

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

Prefixes being announced by APNIC Region ASes:                    58811
    Total APNIC prefixes after maximum aggregation:               22049
    APNIC Deaggregation factor:                                    2.67
Prefixes being announced from the APNIC address blocks:           55821
    Unique aggregates announced from the APNIC address blocks:    24827
APNIC Region origin ASes present in the Internet Routing Table:    3252
    APNIC Prefixes per ASN:                                       17.17
APNIC Region origin ASes announcing only one prefix:                854
APNIC Region transit ASes present in the Internet Routing Table:    502
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              351187872
    Equivalent to 20 /8s, 238 /16s and 179 /24s
    Percentage of available APNIC address space announced:         74.8

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:                    117915
    Total ARIN prefixes after maximum aggregation:                65206
    ARIN Deaggregation factor:                                     1.81
Prefixes being announced from the ARIN address blocks:            87447
    Unique aggregates announced from the ARIN address blocks:     34419
ARIN Region origin ASes present in the Internet Routing Table:    12183
    ARIN Prefixes per ASN:                                         7.18
ARIN Region origin ASes announcing only one prefix:                4701
ARIN Region transit ASes present in the Internet Routing Table:    1131
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               357844480
    Equivalent to 21 /8s, 84 /16s and 70 /24s
    Percentage of available ARIN address space announced:          73.5

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, 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:                     55345
    Total RIPE prefixes after maximum aggregation:                33873
    RIPE Deaggregation factor:                                     1.63
Prefixes being announced from the RIPE address blocks:            50545
    Unique aggregates announced from the RIPE address blocks:     33982
RIPE Region origin ASes present in the Internet Routing Table:    11397
    RIPE Prefixes per ASN:                                         4.43
RIPE Region origin ASes announcing only one prefix:                5957
RIPE Region transit ASes present in the Internet Routing Table:    1722
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               359785600
    Equivalent to 21 /8s, 113 /16s and 228 /24s
    Percentage of available RIPE address space announced:          82.5

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, 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:                   20091
    Total LACNIC prefixes after maximum aggregation:               5118
    LACNIC Deaggregation factor:                                   3.93
Prefixes being announced from the LACNIC address blocks:          18402
    Unique aggregates announced from the LACNIC address blocks:   10322
LACNIC Region origin ASes present in the Internet Routing Table:    951
    LACNIC Prefixes per ASN:                                      19.35
LACNIC Region origin ASes announcing only one prefix:               314
LACNIC Region transit ASes present in the Internet Routing Table:   157
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        15
Number of LACNIC addresses announced to Internet:              51751040
    Equivalent to 3 /8s, 21 /16s and 168 /24s
    Percentage of available LACNIC address space announced:        51.4

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:                   3893
    Total AfriNIC prefixes after maximum aggregation:              1197
    AfriNIC Deaggregation factor:                                  3.25
Prefixes being announced from the AfriNIC address blocks:          4182
    Unique aggregates announced from the AfriNIC address blocks:   1862
AfriNIC Region origin ASes present in the Internet Routing Table:   240
    AfriNIC Prefixes per ASN:                                     17.43
AfriNIC Region origin ASes announcing only one prefix:               74
AfriNIC Region transit ASes present in the Internet Routing Table:   49
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12279808
    Equivalent to 0 /8s, 187 /16s and 96 /24s
    Percentage of available AfriNIC address space announced:       36.6

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     1547        387          87   Videsh Sanchar Nigam Ltd. Aut
 9498     1165        549          61   BHARTI BT INTERNET LTD.
 9583     1101        110         410   Sify Limited
17488     1084         71          76   Hathway IP Over Cable Interne
 4766      849       6006         343   Korea Telecom (KIX)
 4134      825      12917         323   CHINANET-BACKBONE
23577      817         34         698   Korea Telecom (ATM-MPLS)
18101      690        150          53   Reliance Infocom Ltd Internet
 9829      598        450          12   BSNL National Internet Backbo
 1221      548       1919         421   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     1992       3087         178   bellsouth.net, inc. 
 4323     1462       1045         377   Time Warner Telecom
 2386     1438        659         873   AT&T Data Communications Serv
 7018     1377       5830         982   AT&T WorldNet Services
11492     1223        148          12   Cable One 
 7011     1076        298         603   Citizens Utilities 
18566     1044        296          10   Covad Communications 
 1785     1022        510         105   AppliedTheory Corporation 
 6197     1006        597         507   BellSouth Network Solutions, 
  174      973       6837         806   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      409       1772         368   TDC Tele Danmark
 8452      347        188           7   TEDATA
 3301      339       1460         307   TeliaNet Sweden
 3320      317       7044         266   Deutsche Telekom AG
 8866      298         77          21   Bulgarian Telecommunication C
 5462      291        666          26   Telewest Broadband
 3215      285       2718          94   France Telecom Transpac
 8551      283        269          38   Bezeq International
  680      274       2047         264   DFN-IP service G-WiN
 9155      267         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     1233       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      464        228          69   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      414         85          46   ENTEL CHILE S.A. 
11172      411        118          69   Servicios Alestra S.A de C.V 
10620      392        100          63   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      288        853         223   The Internet Solution 
20858      224         34           3   EgyNet
 2018      189        173          83   Tertiary Education Network 
 5713      168        575         102   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      100         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     1992       3087         178   bellsouth.net, inc. 
 4755     1547        387          87   Videsh Sanchar Nigam Ltd. Aut
 4323     1462       1045         377   Time Warner Telecom
 2386     1438        659         873   AT&T Data Communications Serv
 7018     1377       5830         982   AT&T WorldNet Services
 8151     1233       2464         227   UniNet S.A. de C.V. 
11492     1223        148          12   Cable One 
 9498     1165        549          61   BHARTI BT INTERNET LTD.
 9583     1101        110         410   Sify Limited
17488     1084         71          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
 4755      1547        1460      Videsh Sanchar Nigam Ltd. Aut
11492      1223        1211      Cable One 
 9498      1165        1104      BHARTI BT INTERNET LTD.
 4323      1462        1085      Time Warner Telecom
18566      1044        1034      Covad Communications 
17488      1084        1008      Hathway IP Over Cable Interne
 8151      1233        1006      UniNet S.A. de C.V. 
 1785      1022         917      AppliedTheory Corporation 
22773       945         883      Cox Communications, Inc.
 6478       948         797      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     
/13:280     /14:513     /15:1019    /16:9933    /17:4373    /18:7283    
/19:15509   /20:17927   /21:17339   /22:21799   /23:22883   /24:135257  
/25:800     /26:948     /27:490     /28:81      /29:9       /30:1       
/31:0       /32:9       

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

  ASN   No of nets  Total ann.   Description
 6389     1227          1992      bellsouth.net, inc. 
11492     1205          1223      Cable One 
 2386     1136          1438      AT&T Data Communications Serv
18566     1025          1044      Covad Communications 
 7011      964          1076      Citizens Utilities 
 9583      955          1101      Sify Limited
 6478      947           948      AT&T Worldnet Services 
 4755      936          1547      Videsh Sanchar Nigam Ltd. Aut
17488      897          1084      Hathway IP Over Cable Interne
 9498      848          1165      BHARTI BT INTERNET LTD.

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

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

   4:9         8:108      12:2048     13:1        15:20       16:3      
  17:5        18:13       20:35       24:1079     25:1        32:61     
  33:3        38:431      40:93       41:640      43:1        44:2      
  47:12       52:3        55:3        56:3        57:23       58:514    
  59:456      60:443      61:988      62:1115     63:1946     64:3337   
  65:2430     66:3668     67:1205     68:685      69:2253     70:629    
  71:125      72:1764     73:5        74:980      75:217      76:322    
  77:664      78:617      79:170      80:905      81:859      82:593    
  83:391      84:573      85:1007     86:421      87:671      88:325    
  89:1214     90:12       91:1264     92:187      93:502      96:32     
  97:21       98:178      99:3       114:17      116:657     117:331    
 118:142     119:430     120:45      121:524     122:772     123:344    
 124:832     125:1142    128:325     129:202     130:131     131:403    
 132:66      133:9       134:177     135:33      136:220     137:91     
 138:151     139:69      140:484     141:99      142:399     143:308    
 144:358     145:51      146:357     147:153     148:504     149:184    
 150:130     151:196     152:172     153:135     154:10      155:273    
 156:174     157:271     158:167     159:222     160:257     161:115    
 162:233     163:186     164:526     165:448     166:315     167:322    
 168:610     169:131     170:429     171:29      172:10      189:174    
 190:2025    192:5789    193:4094    194:3210    195:2451    196:1082   
 198:3746    199:3257    200:5628    201:1432    202:7586    203:7856   
 204:3989    205:2069    206:2400    207:2760    208:3360    209:3433   
 210:2516    211:1023    212:1394    213:1644    214:470     215:49     
 216:4363    217:1188    218:347     219:412     220:1081    221:462    
 222:308    

End of report




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