Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 18 13:12:53 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 19 Jun, 2010

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

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

BGP routing table entries examined:                              322870
    Prefixes after maximum aggregation:                          148946
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     158175
Total ASes present in the Internet Routing Table:                 34178
    Prefixes per ASN:                                              9.45
Origin-only ASes present in the Internet Routing Table:           29680
Origin ASes announcing only one prefix:                           14399
Transit ASes present in the Internet Routing Table:                4498
Transit-only ASes present in the Internet Routing Table:            104
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      25
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:               266
    Unregistered ASNs in the Routing Table:                         114
Number of 32-bit ASNs allocated by the RIRs:                        631
Prefixes from 32-bit ASNs in the Routing Table:                     722
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            156
Number of addresses announced to Internet:                   2247247968
    Equivalent to 133 /8s, 242 /16s and 72 /24s
    Percentage of available address space announced:               60.6
    Percentage of allocated address space announced:               65.4
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               83.3
Total number of prefixes smaller than registry allocations:      154420

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

Prefixes being announced by APNIC Region ASes:                    77483
    Total APNIC prefixes after maximum aggregation:               26911
    APNIC Deaggregation factor:                                    2.88
Prefixes being announced from the APNIC address blocks:           74300
    Unique aggregates announced from the APNIC address blocks:    33095
APNIC Region origin ASes present in the Internet Routing Table:    4075
    APNIC Prefixes per ASN:                                       18.23
APNIC Region origin ASes announcing only one prefix:               1119
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:              523634976
    Equivalent to 31 /8s, 54 /16s and 9 /24s
    Percentage of available APNIC address space announced:         78.0

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:                    134278
    Total ARIN prefixes after maximum aggregation:                69110
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           107051
    Unique aggregates announced from the ARIN address blocks:     41720
ARIN Region origin ASes present in the Internet Routing Table:    13734
    ARIN Prefixes per ASN:                                         7.79
ARIN Region origin ASes announcing only one prefix:                5267
ARIN Region transit ASes present in the Internet Routing Table:    1340
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               728209056
    Equivalent to 43 /8s, 103 /16s and 150 /24s
    Percentage of available ARIN address space announced:          62.0

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:                     74245
    Total RIPE prefixes after maximum aggregation:                43253
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            67494
    Unique aggregates announced from the RIPE address blocks:     44391
RIPE Region origin ASes present in the Internet Routing Table:    14528
    RIPE Prefixes per ASN:                                         4.65
RIPE Region origin ASes announcing only one prefix:                7502
RIPE Region transit ASes present in the Internet Routing Table:    2164
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          25
Number of RIPE addresses announced to Internet:               432216992
    Equivalent to 25 /8s, 195 /16s and 27 /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:                   28758
    Total LACNIC prefixes after maximum aggregation:               6858
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:          27214
    Unique aggregates announced from the LACNIC address blocks:   14180
LACNIC Region origin ASes present in the Internet Routing Table:   1296
    LACNIC Prefixes per ASN:                                      21.00
LACNIC Region origin ASes announcing only one prefix:               402
LACNIC Region transit ASes present in the Internet Routing Table:   227
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              74639360
    Equivalent to 4 /8s, 114 /16s and 232 /24s
    Percentage of available LACNIC address space announced:        55.6

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:                   7166
    Total AfriNIC prefixes after maximum aggregation:              1816
    AfriNIC Deaggregation factor:                                  3.95
Prefixes being announced from the AfriNIC address blocks:          5505
    Unique aggregates announced from the AfriNIC address blocks:   1731
AfriNIC Region origin ASes present in the Internet Routing Table:   370
    AfriNIC Prefixes per ASN:                                     14.88
AfriNIC Region origin ASes announcing only one prefix:              109
AfriNIC Region transit ASes present in the Internet Routing Table:   82
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             18911488
    Equivalent to 1 /8s, 32 /16s and 145 /24s
    Percentage of available AfriNIC address space announced:       56.4

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     1330        232         107   TPG Internet Pty Ltd
17488     1319        140         127   Hathway IP Over Cable Interne
 4755     1310        294         154   TATA Communications formerly 
17974     1011        270          50   PT TELEKOMUNIKASI INDONESIA
 9583      995         73         490   Sify Limited
 4134      983      21291         407   CHINANET-BACKBONE
24560      919        306         169   Bharti Airtel Ltd., Telemedia
 4808      837       1572         215   CNCGROUP IP network: China169
 9829      793        680          39   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     3911       3733         287   bellsouth.net, inc. 
 4323     3368       1114         395   Time Warner Telecom
 1785     1793        698         129   PaeTec Communications, Inc.
20115     1553       1514         658   Charter Communications 
 7018     1513       5737         961   AT&T WorldNet Services
 2386     1286        569         910   AT&T Data Communications Serv
 6478     1284        260          84   AT&T Worldnet Services 
 3356     1181      10894         407   Level 3 Communications, LLC 
22773     1166       2605          65   Cox Communications, Inc.
11492     1159        208          65   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      641         56           6   United Telecom of Georgia
 3292      453       2026         393   TDC Tele Danmark
30890      444        111         206   Evolva Telecom
  702      411       1869         327   UUNET - Commercial IP service
 8551      400        353          46   Bezeq International
 8866      400        117          18   Bulgarian Telecommunication C
 3301      372       1422         327   TeliaNet Sweden
 3320      370       7313         321   Deutsche Telekom AG
34984      360         89         185   BILISIM TELEKOM
 9198      352        202          13   Kazakhtelecom Data Network Ad

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     1520       2965         244   UniNet S.A. de C.V. 
10620     1059        237         152   TVCABLE BOGOTA 
28573      945        767          92   NET Servicos de Comunicao S.A
 7303      720        383         102   Telecom Argentina Stet-France
 6503      666        174         210   AVANTEL, S.A. 
22047      546        310          15   VTR PUNTO NET S.A. 
 3816      482        212          77   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
14420      464         32          68   ANDINATEL S.A. 
14117      450         31          14   Telefonica del Sur S.A. 

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     1163        445          10   TEDATA
24863      720        147          39   LINKdotNET AS number
36992      640        278         186   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      188         78          10   RAYA Telecom - Egypt
29571      176         19          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     3911       3733         287   bellsouth.net, inc. 
 4323     3368       1114         395   Time Warner Telecom
 4766     1847       8407         482   Korea Telecom (KIX)
 1785     1793        698         129   PaeTec Communications, Inc.
20115     1553       1514         658   Charter Communications 
 8151     1520       2965         244   UniNet S.A. de C.V. 
 7018     1513       5737         961   AT&T WorldNet Services
 7545     1330        232         107   TPG Internet Pty Ltd
17488     1319        140         127   Hathway IP Over Cable Interne
 4755     1310        294         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      3368        2973      Time Warner Telecom
 1785      1793        1664      PaeTec Communications, Inc.
 4766      1847        1365      Korea Telecom (KIX)
 8151      1520        1276      UniNet S.A. de C.V. 
 7545      1330        1223      TPG Internet Pty Ltd
 6478      1284        1200      AT&T Worldnet Services 
17488      1319        1192      Hathway IP Over Cable Interne
 4755      1310        1156      TATA Communications formerly 
 8452      1163        1153      TEDATA
22773      1166        1101      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  12.39.155.0/24        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      /12:194     
/13:403     /14:703     /15:1283    /16:11117   /17:5327    /18:9044    
/19:18356   /20:22585   /21:22805   /22:29734   /23:29309   /24:168896  
/25:950     /26:1238    /27:617     /28:118     /29:47      /30:13      
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2506          3911      bellsouth.net, inc. 
 4323     1852          3368      Time Warner Telecom
 4766     1482          1847      Korea Telecom (KIX)
 1785     1256          1793      PaeTec Communications, Inc.
11492     1071          1159      Cable One 
17488     1066          1319      Hathway IP Over Cable Interne
 8452     1051          1163      TEDATA
18566     1040          1059      Covad Communications 
10620      975          1059      TVCABLE BOGOTA 
 7018      914          1513      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         4:13        8:285      12:2003     13:7        14:1      
  15:23       16:3        17:8        20:21       24:1429     27:114    
  31:1        32:49       33:12       38:681      40:98       41:2437   
  44:3        47:18       52:9        55:9        56:2        57:25     
  58:747      59:502      60:458      61:1072     62:1070     63:1971   
  64:3651     65:2356     66:4259     67:1824     68:1114     69:2883   
  70:704      71:237      72:1836     73:2        74:2102     75:250    
  76:308      77:928      78:631      79:417      80:995      81:795    
  82:487      83:431      84:698      85:1047     86:461      87:692    
  88:341      89:1578     90:93       91:2818     92:472      93:1064   
  94:1414     95:612      96:284      97:323      98:580      99:28     
 108:32      109:528     110:345     111:518     112:265     113:302    
 114:421     115:548     116:1053    117:639     118:477     119:935    
 120:147     121:738     122:1449    123:927     124:1114    125:1308   
 128:226     129:214     130:195     131:553     132:244     133:17     
 134:196     135:45      136:235     137:162     138:264     139:104    
 140:510     141:137     142:348     143:392     144:476     145:50     
 146:442     147:168     148:662     149:300     150:152     151:166    
 152:295     153:168     154:2       155:328     156:156     157:325    
 158:107     159:375     160:316     161:181     162:255     163:171    
 164:408     165:342     166:465     167:404     168:786     169:164    
 170:703     171:57      172:2       173:840     174:613     175:93     
 176:1       178:187     180:487     182:119     183:225     184:62     
 186:469     187:356     188:1081    189:780     190:3777    192:5749   
 193:4700    194:3357    195:2774    196:1167    198:3586    199:3456   
 200:5356    201:1546    202:7976    203:8287    204:4076    205:2328   
 206:2520    207:3070    208:3873    209:3422    210:2505    211:1262   
 212:1748    213:1682    214:661     215:69      216:4667    217:1432   
 218:494     219:378     220:1138    221:413     222:311     223:1      


End of report




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