Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 25 13:12:56 CDT 2010


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 26 Jun, 2010

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

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

BGP routing table entries examined:                              323205
    Prefixes after maximum aggregation:                          149101
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     158363
Total ASes present in the Internet Routing Table:                 34231
    Prefixes per ASN:                                              9.44
Origin-only ASes present in the Internet Routing Table:           29720
Origin ASes announcing only one prefix:                           14411
Transit ASes present in the Internet Routing Table:                4511
Transit-only ASes present in the Internet Routing Table:            108
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:               295
    Unregistered ASNs in the Routing Table:                         112
Number of 32-bit ASNs allocated by the RIRs:                        642
Prefixes from 32-bit ASNs in the Routing Table:                     757
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            159
Number of addresses announced to Internet:                   2251743840
    Equivalent to 134 /8s, 54 /16s and 226 /24s
    Percentage of available address space announced:               60.8
    Percentage of allocated address space announced:               65.5
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               83.4
Total number of prefixes smaller than registry allocations:      154204

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

Prefixes being announced by APNIC Region ASes:                    78033
    Total APNIC prefixes after maximum aggregation:               26885
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           74858
    Unique aggregates announced from the APNIC address blocks:    33140
APNIC Region origin ASes present in the Internet Routing Table:    4081
    APNIC Prefixes per ASN:                                       18.34
APNIC Region origin ASes announcing only one prefix:               1117
APNIC Region transit ASes present in the Internet Routing Table:    639
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              525628704
    Equivalent to 31 /8s, 84 /16s and 117 /24s
    Percentage of available APNIC address space announced:         78.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks     1/8,  14/8,  27/8,  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, 133/8, 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, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    133710
    Total ARIN prefixes after maximum aggregation:                69226
    ARIN Deaggregation factor:                                     1.93
Prefixes being announced from the ARIN address blocks:           106681
    Unique aggregates announced from the ARIN address blocks:     41819
ARIN Region origin ASes present in the Internet Routing Table:    13744
    ARIN Prefixes per ASN:                                         7.76
ARIN Region origin ASes announcing only one prefix:                5271
ARIN Region transit ASes present in the Internet Routing Table:    1349
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               729671968
    Equivalent to 43 /8s, 125 /16s and 233 /24s
    Percentage of available ARIN address space announced:          62.1

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, 393216-394239
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,  50/8,  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, 107/8,
                       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:                     74437
    Total RIPE prefixes after maximum aggregation:                43213
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            67581
    Unique aggregates announced from the RIPE address blocks:     44362
RIPE Region origin ASes present in the Internet Routing Table:    14549
    RIPE Prefixes per ASN:                                         4.65
RIPE Region origin ASes announcing only one prefix:                7512
RIPE Region transit ASes present in the Internet Routing Table:    2159
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               432412960
    Equivalent to 25 /8s, 198 /16s and 25 /24s
    Percentage of available RIPE address space announced:          75.8

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, 47104-52223, 196608-197631
RIPE Address Blocks      2/8,  25/8,  31/8,  46/8,  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, 176/8, 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:                   28719
    Total LACNIC prefixes after maximum aggregation:               6891
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:          27171
    Unique aggregates announced from the LACNIC address blocks:   14182
LACNIC Region origin ASes present in the Internet Routing Table:   1304
    LACNIC Prefixes per ASN:                                      20.84
LACNIC Region origin ASes announcing only one prefix:               400
LACNIC Region transit ASes present in the Internet Routing Table:   232
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              75105792
    Equivalent to 4 /8s, 122 /16s and 6 /24s
    Percentage of available LACNIC address space announced:        56.0

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 181/8, 186/8, 187/8, 189/8, 190/8, 200/8,
                       201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   7302
    Total AfriNIC prefixes after maximum aggregation:              1850
    AfriNIC Deaggregation factor:                                  3.95
Prefixes being announced from the AfriNIC address blocks:          5623
    Unique aggregates announced from the AfriNIC address blocks:   1730
AfriNIC Region origin ASes present in the Internet Routing Table:   374
    AfriNIC Prefixes per ASN:                                     15.03
AfriNIC Region origin ASes announcing only one prefix:              111
AfriNIC Region transit ASes present in the Internet Routing Table:   84
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             19523328
    Equivalent to 1 /8s, 41 /16s and 231 /24s
    Percentage of available AfriNIC address space announced:       58.2

AfriNIC AS Blocks      36864-37887, 327680-328703 & 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     1847       8407         482   Korea Telecom (KIX)
 7545     1335        232         107   TPG Internet Pty Ltd
17488     1319        140         127   Hathway IP Over Cable Interne
 4755     1314        295         154   TATA Communications formerly 
17974     1141        283          23   PT TELEKOMUNIKASI INDONESIA
 9583      997         74         491   Sify Limited
24560      923        306         170   Bharti Airtel Ltd., Telemedia
 4134      876      21292         408   CHINANET-BACKBONE
 4808      829       1572         215   CNCGROUP IP network: China169
 9829      794        681          34   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
 6389     3910       3733         288   bellsouth.net, inc. 
 4323     2711       1114         395   Time Warner Telecom
 1785     1795        698         129   PaeTec Communications, Inc.
20115     1559       1520         653   Charter Communications 
 7018     1506       5736         957   AT&T WorldNet Services
 2386     1285        568         908   AT&T Data Communications Serv
 6478     1283        260         110   AT&T Worldnet Services 
 3356     1180      10889         405   Level 3 Communications, LLC 
22773     1166       2861          66   Cox Communications, Inc.
11492     1154        207          71   Cable One 

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
35805      644         56           6   United Telecom of Georgia
 3292      453       2027         393   TDC Tele Danmark
30890      444        111         206   Evolva Telecom
 9198      411        202          13   Kazakhtelecom Data Network Ad
  702      410       1869         326   UUNET - Commercial IP service
 8551      400        353          46   Bezeq International
 8866      400        117          18   Bulgarian Telecommunication C
 3320      372       7329         323   Deutsche Telekom AG
 3301      371       1414         326   TeliaNet Sweden
34984      360         89         185   BILISIM TELEKOM

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     1462       3017         250   UniNet S.A. de C.V. 
10620     1057        237         152   TVCABLE BOGOTA 
28573     1003        784          97   NET Servicos de Comunicao S.A
 7303      745        385         114   Telecom Argentina Stet-France
 6503      677        175         216   AVANTEL, S.A. 
22047      547        310          15   VTR PUNTO NET S.A. 
 3816      492        214          78   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
14420      468         32          69   ANDINATEL S.A. 
11172      450         99          76   Servicios Alestra S.A de C.V 

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     1162        445          10   TEDATA
24863      726        147          39   LINKdotNET AS number
36992      641        279         187   Etisalat MISR
 3741      269        852         230   The Internet Solution 
33776      219         12          11   Starcomms Nigeria Limited
 2018      211        244          61   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
24835      189         78          10   RAYA Telecom - Egypt
29571      175         17          10   Ci Telecom Autonomous system 
29975      133        506          14   Vodacom

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     3910       3733         288   bellsouth.net, inc. 
 4323     2711       1114         395   Time Warner Telecom
 4766     1847       8407         482   Korea Telecom (KIX)
 1785     1795        698         129   PaeTec Communications, Inc.
20115     1559       1520         653   Charter Communications 
 7018     1506       5736         957   AT&T WorldNet Services
 8151     1462       3017         250   UniNet S.A. de C.V. 
 7545     1335        232         107   TPG Internet Pty Ltd
17488     1319        140         127   Hathway IP Over Cable Interne
 4755     1314        295         154   TATA Communications formerly 

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

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

  ASN   No of nets  Net Savings Description
 4323      2711        2316      Time Warner Telecom
 1785      1795        1666      PaeTec Communications, Inc.
 4766      1847        1365      Korea Telecom (KIX)
 7545      1335        1228      TPG Internet Pty Ltd
 8151      1462        1212      UniNet S.A. de C.V. 
17488      1319        1192      Hathway IP Over Cable Interne
 6478      1283        1173      AT&T Worldnet Services 
 4755      1314        1160      TATA Communications formerly 
 8452      1162        1152      TEDATA
17974      1141        1118      PT TELEKOMUNIKASI INDONESIA

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  12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.159.0/24        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
31.0.0.0/16          12654     RIPE NCC RIS Project
31.1.0.0/21          12654     RIPE NCC RIS Project
31.1.24.0/24         12654     RIPE NCC RIS Project
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24       6453     Teleglobe Inc. 
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      36990     Alkan Telecom Ltd
41.223.198.0/24      36990     Alkan Telecom Ltd

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        /8:20       /9:10      /10:25      /11:68      /12:196     
/13:406     /14:707     /15:1283    /16:11140   /17:5339    /18:9140    
/19:18372   /20:22877   /21:22846   /22:29912   /23:29457   /24:168471  
/25:971     /26:1252    /27:619     /28:31      /29:47      /30:9       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2505          3910      bellsouth.net, inc. 
 4766     1482          1847      Korea Telecom (KIX)
 4323     1396          2711      Time Warner Telecom
 1785     1258          1795      PaeTec Communications, Inc.
11492     1066          1154      Cable One 
17488     1066          1319      Hathway IP Over Cable Interne
 8452     1050          1162      TEDATA
18566     1040          1059      Covad Communications 
10620      973          1057      TVCABLE BOGOTA 
 7018      911          1506      AT&T WorldNet Services

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

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

   1:2         2:2         4:13        8:288      12:2003     13:7      
  14:1        15:23       16:3        17:8        20:21       24:1434   
  27:121      31:1        32:49       33:12       38:679      40:98     
  41:2448     44:3        47:18       52:9        55:7        56:2      
  57:25       58:751      59:502      60:458      61:1074     62:1058   
  63:1976     64:3653     65:2356     66:4066     67:1822     68:1110   
  69:2878     70:694      71:237      72:1843     73:2        74:2105   
  75:250      76:308      77:930      78:615      79:421      80:972    
  81:793      82:490      83:436      84:703      85:1051     86:458    
  87:674      88:342      89:1566     90:93       91:2836     92:486    
  93:1067     94:1416     95:624      96:287      97:205      98:579    
  99:28      108:32      109:548     110:352     111:523     112:270    
 113:310     114:423     115:547     116:1069    117:660     118:482    
 119:938     120:143     121:739     122:1449    123:933     124:1116   
 125:1317    128:226     129:212     130:195     131:555     132:250    
 133:17      134:194     135:45      136:243     137:160     138:264    
 139:104     140:509     141:138     142:348     143:392     144:473    
 145:47      146:443     147:166     148:662     149:300     150:150    
 151:166     152:296     153:168     154:2       155:328     156:157    
 157:320     158:109     159:377     160:317     161:181     162:254    
 163:176     164:408     165:359     166:461     167:404     168:651    
 169:160     170:712     171:58      172:2       173:853     174:436    
 175:98      176:1       178:224     180:501     182:135     183:220    
 184:69      186:476     187:350     188:1087    189:782     190:3751   
 192:5746    193:4702    194:3364    195:2781    196:1169    198:3568   
 199:3449    200:5319    201:1556    202:7982    203:8250    204:4077   
 205:2319    206:2517    207:3103    208:3861    209:3449    210:2512   
 211:1261    212:1703    213:1680    214:657     215:69      216:4658   
 217:1516    218:491     219:378     220:1136    221:398     222:314    
 223:1      

End of report




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