Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Sat Aug 22 02:04:35 CDT 2009


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 22 Aug, 2009

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

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

BGP routing table entries examined:                              293735
    Prefixes after maximum aggregation:                          139010
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     146284
Total ASes present in the Internet Routing Table:                 31976
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           27800
Origin ASes announcing only one prefix:                           13547
Transit ASes present in the Internet Routing Table:                4176
Transit-only ASes present in the Internet Routing Table:            100
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               629
    Unregistered ASNs in the Routing Table:                         167
Number of 32-bit ASNs allocated by the RIRs:                        241
Prefixes from 32-bit ASNs in the Routing Table:                      92
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            328
Number of addresses announced to Internet:                   2089063616
    Equivalent to 124 /8s, 132 /16s and 148 /24s
    Percentage of available address space announced:               56.4
    Percentage of allocated address space announced:               64.5
    Percentage of available address space allocated:               87.3
    Percentage of address space in use by end-sites:               78.7
Total number of prefixes smaller than registry allocations:      140471

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

Prefixes being announced by APNIC Region ASes:                    70153
    Total APNIC prefixes after maximum aggregation:               24877
    APNIC Deaggregation factor:                                    2.82
Prefixes being announced from the APNIC address blocks:           69601
    Unique aggregates announced from the APNIC address blocks:    31611
APNIC Region origin ASes present in the Internet Routing Table:    3747
    APNIC Prefixes per ASN:                                       18.58
APNIC Region origin ASes announcing only one prefix:               1023
APNIC Region transit ASes present in the Internet Routing Table:    579
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              481521344
    Equivalent to 28 /8s, 179 /16s and 110 /24s
    Percentage of available APNIC address space announced:         82.0

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks    43/8,  58/8,  59/8,  60/8,  61/8, 110/8, 111/8,
                       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, 175/8, 180/8, 182/8, 183/8, 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:                    124497
    Total ARIN prefixes after maximum aggregation:                66423
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:           125109
    Unique aggregates announced from the ARIN address blocks:     52466
ARIN Region origin ASes present in the Internet Routing Table:    13183
    ARIN Prefixes per ASN:                                         9.49
ARIN Region origin ASes announcing only one prefix:                5077
ARIN Region transit ASes present in the Internet Routing Table:    1290
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1012944512
    Equivalent to 60 /8s, 96 /16s and 78 /24s
    Percentage of available ARIN address space announced:          88.8

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
                       53248-55295
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  24/8,  26/8,  28/8,  29/8,
                        30/8,  32/8,  33/8,  34/8,  35/8,  38/8,  40/8,
                        44/8,  45/8,  47/8,  48/8,  52/8,  54/8,  55/8,
                        56/8,  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, 108/8, 173/8,
                       174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
                       208/8, 209/8, 214/8, 215/8, 216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     67501
    Total RIPE prefixes after maximum aggregation:                39779
    RIPE Deaggregation factor:                                     1.70
Prefixes being announced from the RIPE address blocks:            67114
    Unique aggregates announced from the RIPE address blocks:     45359
RIPE Region origin ASes present in the Internet Routing Table:    13379
    RIPE Prefixes per ASN:                                         5.02
RIPE Region origin ASes announcing only one prefix:                6987
RIPE Region transit ASes present in the Internet Routing Table:    2000
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               499549376
    Equivalent to 29 /8s, 198 /16s and 132 /24s
    Percentage of available RIPE address space announced:          99.3

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, 47104-52223
RIPE Address Blocks     25/8,  51/8,  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, 109/8, 178/8, 193/8, 194/8, 195/8, 212/8,
                       213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   24997
    Total LACNIC prefixes after maximum aggregation:               6135
    LACNIC Deaggregation factor:                                   4.07
Prefixes being announced from the LACNIC address blocks:          24966
    Unique aggregates announced from the LACNIC address blocks:   13957
LACNIC Region origin ASes present in the Internet Routing Table:   1160
    LACNIC Prefixes per ASN:                                      21.52
LACNIC Region origin ASes announcing only one prefix:               375
LACNIC Region transit ASes present in the Internet Routing Table:   188
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC addresses announced to Internet:              73280448
    Equivalent to 4 /8s, 94 /16s and 43 /24s
    Percentage of available LACNIC address space announced:        72.8

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247
                       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:                   6210
    Total AfriNIC prefixes after maximum aggregation:              1526
    AfriNIC Deaggregation factor:                                  4.07
Prefixes being announced from the AfriNIC address blocks:          6617
    Unique aggregates announced from the AfriNIC address blocks:   2630
AfriNIC Region origin ASes present in the Internet Routing Table:   307
    AfriNIC Prefixes per ASN:                                     21.55
AfriNIC Region origin ASes announcing only one prefix:               85
AfriNIC Region transit ASes present in the Internet Routing Table:   69
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             20242944
    Equivalent to 1 /8s, 52 /16s and 226 /24s
    Percentage of available AfriNIC address space announced:       60.3

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1724       6979         424   Korea Telecom (KIX)
17488     1554        140         103   Hathway IP Over Cable Interne
 4755     1227        292         140   TATA Communications formerly 
 9583     1088         86         530   Sify Limited
 4134      998      18167         389   CHINANET-BACKBONE
18101      959        202          32   Reliance Infocom Ltd Internet
 7545      819        198         103   TPG Internet Pty Ltd
 9829      807        620          16   BSNL National Internet Backbo
23577      787         34         667   Korea Telecom (ATM-MPLS)
 4808      762       1533         176   CNCGROUP IP network: China169

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     4177       3607         314   bellsouth.net, inc. 
 4323     1908       1049         390   Time Warner Telecom
 1785     1728        714         138   PaeTec Communications, Inc.
 7018     1492       5875        1052   AT&T WorldNet Services
20115     1471       1474         674   Charter Communications 
 6478     1381        282         271   AT&T Worldnet Services 
 2386     1289        657         937   AT&T Data Communications Serv
 3356     1210      10979         438   Level 3 Communications, LLC 
11492     1110        208          12   Cable One 
22773     1086       2604          66   Cox Communications, Inc.

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
30890      484         92         197   Evolva Telecom
12479      475        578           6   Uni2 Autonomous System
 3292      462       1905         397   TDC Tele Danmark
  702      430       1861         346   UUNET - Commercial IP service
35805      380         40           5   United Telecom of Georgia
 9198      366        138          12   Kazakhtelecom Data Network Ad
 3320      348       7067         301   Deutsche Telekom AG
 3215      344       3081         109   France Telecom Transpac
 3301      344       1412         308   TeliaNet Sweden
 8866      340        109          20   Bulgarian Telecommunication C

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     1475       2882         246   UniNet S.A. de C.V. 
10620      990        220          93   TVCABLE BOGOTA 
 7303      625        332          96   Telecom Argentina Stet-France
28573      619        582          37   NET Servicos de Comunicao S.A
22047      541        302          14   VTR PUNTO NET S.A. 
11830      485        308          67   Instituto Costarricense de El
11172      442         99          70   Servicios Alestra S.A de C.V 
 6471      421         96          31   ENTEL CHILE S.A. 
 7738      415        858          29   Telecomunicacoes da Bahia S.A
 3816      396        191          79   Empresa Nacional de Telecomun

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
 8452     1002        188           7   TEDATA
24863      917         91          50   LINKdotNET AS number
20858      324         34           6   EgyNet
 3741      277        857         237   The Internet Solution 
 2018      200        180         141   Tertiary Education Network 
 6713      175        166          16   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      143         14           6   Ci Telecom Autonomous system 
24835      130         46           9   RAYA Telecom - Egypt
 5536      122          8          13   Internet Egypt Network

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     4177       3607         314   bellsouth.net, inc. 
 4323     1908       1049         390   Time Warner Telecom
 1785     1728        714         138   PaeTec Communications, Inc.
 4766     1724       6979         424   Korea Telecom (KIX)
17488     1554        140         103   Hathway IP Over Cable Interne
 7018     1492       5875        1052   AT&T WorldNet Services
 8151     1475       2882         246   UniNet S.A. de C.V. 
20115     1471       1474         674   Charter Communications 
 6478     1381        282         271   AT&T Worldnet Services 
 2386     1289        657         937   AT&T Data Communications Serv

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

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

  ASN   No of nets  Net Savings Description
 1785      1728        1590      PaeTec Communications, Inc.
 4323      1908        1518      Time Warner Telecom
17488      1554        1451      Hathway IP Over Cable Interne
 4766      1724        1300      Korea Telecom (KIX)
 8151      1475        1229      UniNet S.A. de C.V. 
 6478      1381        1110      AT&T Worldnet Services 
11492      1110        1098      Cable One 
 4755      1227        1087      TATA Communications formerly 
18566      1062        1052      Covad Communications 
22773      1086        1020      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         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
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         7018       AT&T WorldNet Servic
25639   UNALLOCATED   12.41.169.0/24        7018       AT&T WorldNet Servic

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
24.225.128.0/17      36377     PATRIOT MEDIA AND COMMUNICATI
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.176.0/22      36981     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
43.245.0.0/16         7502     Internetwork Kyoto
43.245.96.0/20        7502     Internetwork Kyoto
43.245.112.0/20       7502     Internetwork Kyoto
43.245.192.0/20       7502     Internetwork Kyoto
43.245.208.0/20       7502     Internetwork Kyoto

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       /9:10      /10:24      /11:59      /12:168     
/13:351     /14:623     /15:1176    /16:10626   /17:4809    /18:8355    
/19:17303   /20:20678   /21:20624   /22:26600   /23:26336   /24:153249  
/25:924     /26:1039    /27:585     /28:153     /29:8       /30:7       
/31:1       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2707          4177      bellsouth.net, inc. 
 4766     1412          1724      Korea Telecom (KIX)
17488     1300          1554      Hathway IP Over Cable Interne
 1785     1199          1728      PaeTec Communications, Inc.
18566     1043          1062      Covad Communications 
11492     1037          1110      Cable One 
 4323      960          1908      Time Warner Telecom
 9583      941          1088      Sify Limited
 8452      926          1002      TEDATA
10620      896           990      TVCABLE BOGOTA 

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

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

   4:14        8:213      12:2138     13:7        15:21       16:3      
  17:5        20:35       24:1129     32:52       34:2        38:598    
  40:97       41:1760     43:1        44:2        47:10       52:6      
  55:2        56:2        57:25       58:621      59:608      60:461    
  61:973      62:1105     63:2013     64:3624     65:2404     66:3416   
  67:1740     68:870      69:2729     70:556      71:162      72:1654   
  73:2        74:1707     75:179      76:314      77:851      78:569    
  79:372      80:933      81:850      82:598      83:453      84:633    
  85:1070     86:375      87:674      88:372      89:1462     90:48     
  91:2499     92:398      93:1114     94:1195     95:1160     96:166    
  97:264      98:283      99:28      110:185     111:382     112:118    
 113:152     114:238     115:287     116:1141    117:551     118:330    
 119:770     120:120     121:651     122:1238    123:755     124:1026   
 125:1338    128:224     129:219     130:128     131:416     132:75     
 133:9       134:182     135:43      136:225     137:160     138:170    
 139:83      140:444     141:123     142:384     143:353     144:388    
 145:49      146:390     147:156     148:530     149:222     150:208    
 151:192     152:210     153:148     154:2       155:272     156:167    
 157:301     158:112     159:344     160:290     161:164     162:269    
 163:164     164:275     165:529     166:465     167:360     168:701    
 169:161     170:475     171:41      172:2       173:381     174:316    
 175:1       178:1       180:7       182:1       186:129     187:164    
 188:416     189:583     190:2922    192:5784    193:4257    194:3294   
 195:2689    196:1115    198:3650    199:3364    200:5111    201:1304   
 202:7744    203:8275    204:3882    205:2166    206:2451    207:2738   
 208:3929    209:3408    210:2529    211:1103    212:1604    213:1655   
 214:132     215:30      216:4303    217:1349    218:405     219:415    
 220:1118    221:461     222:329    

End of report




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