Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 23 13:11:10 CDT 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG and
the RIPE Routing Working Group.

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 24 Jul, 2010

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

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

BGP routing table entries examined:                              326536
    Prefixes after maximum aggregation:                          150103
    Deaggregation factor:                                          2.18
    Unique aggregates announced to Internet:                     159244
Total ASes present in the Internet Routing Table:                 34425
    Prefixes per ASN:                                              9.49
Origin-only ASes present in the Internet Routing Table:           29885
Origin ASes announcing only one prefix:                           14463
Transit ASes present in the Internet Routing Table:                4540
Transit-only ASes present in the Internet Routing Table:            105
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      26
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:               304
    Unregistered ASNs in the Routing Table:                         118
Number of 32-bit ASNs allocated by the RIRs:                        701
Prefixes from 32-bit ASNs in the Routing Table:                     851
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            162
Number of addresses announced to Internet:                   2277322752
    Equivalent to 135 /8s, 189 /16s and 48 /24s
    Percentage of available address space announced:               61.4
    Percentage of allocated address space announced:               66.2
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               83.9
Total number of prefixes smaller than registry allocations:      155564

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

Prefixes being announced by APNIC Region ASes:                    79446
    Total APNIC prefixes after maximum aggregation:               27173
    APNIC Deaggregation factor:                                    2.92
Prefixes being announced from the APNIC address blocks:           76327
    Unique aggregates announced from the APNIC address blocks:    33533
APNIC Region origin ASes present in the Internet Routing Table:    4123
    APNIC Prefixes per ASN:                                       18.51
APNIC Region origin ASes announcing only one prefix:               1135
APNIC Region transit ASes present in the Internet Routing Table:    637
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              532226080
    Equivalent to 31 /8s, 185 /16s and 32 /24s
    Percentage of available APNIC address space announced:         79.3

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:                    134651
    Total ARIN prefixes after maximum aggregation:                69494
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           107489
    Unique aggregates announced from the ARIN address blocks:     42017
ARIN Region origin ASes present in the Internet Routing Table:    13802
    ARIN Prefixes per ASN:                                         7.79
ARIN Region origin ASes announcing only one prefix:                5273
ARIN Region transit ASes present in the Internet Routing Table:    1358
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               729830688
    Equivalent to 43 /8s, 128 /16s and 85 /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:                     75032
    Total RIPE prefixes after maximum aggregation:                43448
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            68199
    Unique aggregates announced from the RIPE address blocks:     44519
RIPE Region origin ASes present in the Internet Routing Table:    14632
    RIPE Prefixes per ASN:                                         4.66
RIPE Region origin ASes announcing only one prefix:                7521
RIPE Region transit ASes present in the Internet Routing Table:    2185
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               433475968
    Equivalent to 25 /8s, 214 /16s and 81 /24s
    Percentage of available RIPE address space announced:          76.0

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:                   29026
    Total LACNIC prefixes after maximum aggregation:               6973
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:          27538
    Unique aggregates announced from the LACNIC address blocks:   14474
LACNIC Region origin ASes present in the Internet Routing Table:   1311
    LACNIC Prefixes per ASN:                                      21.01
LACNIC Region origin ASes announcing only one prefix:               414
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:                        26
Number of LACNIC addresses announced to Internet:              75723840
    Equivalent to 4 /8s, 131 /16s and 116 /24s
    Percentage of available LACNIC address space announced:        56.4

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:                   7279
    Total AfriNIC prefixes after maximum aggregation:              1870
    AfriNIC Deaggregation factor:                                  3.89
Prefixes being announced from the AfriNIC address blocks:          5589
    Unique aggregates announced from the AfriNIC address blocks:   1640
AfriNIC Region origin ASes present in the Internet Routing Table:   383
    AfriNIC Prefixes per ASN:                                     14.59
AfriNIC Region origin ASes announcing only one prefix:              120
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:             19892224
    Equivalent to 1 /8s, 47 /16s and 136 /24s
    Percentage of available AfriNIC address space announced:       59.3

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     1857       8409         489   Korea Telecom (KIX)
 4755     1474        298         160   TATA Communications formerly 
 7545     1361        232         104   TPG Internet Pty Ltd
17488     1334        147         128   Hathway IP Over Cable Interne
17974     1179        286          55   PT TELEKOMUNIKASI INDONESIA
 9583     1002         74         486   Sify Limited
24560      985        304         179   Bharti Airtel Ltd., Telemedia
 4808      827       1575         219   CNCGROUP IP network: China169
 9829      813        685          32   BSNL National Internet Backbo
 4134      783      21740         411   CHINANET-BACKBONE

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     3889       3718         287   bellsouth.net, inc. 
 4323     2723       1112         393   Time Warner Telecom
19262     1942       4567         278   Verizon Global Networks 
 1785     1780        698         129   PaeTec Communications, Inc.
20115     1488       1522         654   Charter Communications 
 7018     1477       5734         960   AT&T WorldNet Services
 2386     1287        568         909   AT&T Data Communications Serv
 6478     1261        252         187   AT&T Worldnet Services 
22773     1172       2858          61   Cox Communications, Inc.
 3356     1159      10878         403   Level 3 Communications, LLC 

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      653         56           6   United Telecom of Georgia
 9198      497        202          13   Kazakhtelecom Data Network Ad
 3292      449       2026         390   TDC Tele Danmark
30890      442        111         206   Evolva Telecom
  702      413       1869         325   UUNET - Commercial IP service
 8866      403        117          18   Bulgarian Telecommunication C
 8551      401        353          46   Bezeq International
 3320      375       7329         326   Deutsche Telekom AG
 3301      371       1414         326   TeliaNet Sweden
34984      363         89         183   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     1460       3049         251   UniNet S.A. de C.V. 
10620     1072        240         149   TVCABLE BOGOTA 
28573     1011        818         100   NET Servicos de Comunicao S.A
 7303      768        396         103   Telecom Argentina Stet-France
 6503      700        177         218   AVANTEL, S.A. 
22047      553        310          15   VTR PUNTO NET S.A. 
14420      499         32          72   CORPORACION NACIONAL DE TELEC
 3816      492        208          87   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
11172      448         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     1107        445          10   TEDATA
24863      727        147          39   LINKdotNET AS number
36992      651        279         185   Etisalat MISR
 3741      269        898         231   The Internet Solution 
33776      220         12          12   Starcomms Nigeria Limited
 2018      210        245          62   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
24835      189         78           9   RAYA Telecom - Egypt
29571      183         19          10   Ci Telecom Autonomous system 
16637      159        423          93   MTN Network Solutions

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     3889       3718         287   bellsouth.net, inc. 
 4323     2723       1112         393   Time Warner Telecom
19262     1942       4567         278   Verizon Global Networks 
 4766     1857       8409         489   Korea Telecom (KIX)
 1785     1780        698         129   PaeTec Communications, Inc.
20115     1488       1522         654   Charter Communications 
 7018     1477       5734         960   AT&T WorldNet Services
 4755     1474        298         160   TATA Communications formerly 
 8151     1460       3049         251   UniNet S.A. de C.V. 
 7545     1361        232         104   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 4323      2723        2330      Time Warner Telecom
19262      1942        1664      Verizon Global Networks 
 1785      1780        1651      PaeTec Communications, Inc.
 4766      1857        1368      Korea Telecom (KIX)
 4755      1474        1314      TATA Communications formerly 
 7545      1361        1257      TPG Internet Pty Ltd
 8151      1460        1209      UniNet S.A. de C.V. 
17488      1334        1206      Hathway IP Over Cable Interne
17974      1179        1124      PT TELEKOMUNIKASI INDONESIA
22773      1172        1111      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        /8:21       /9:10      /10:25      /11:68      /12:198     
/13:408     /14:710     /15:1296    /16:11185   /17:5336    /18:9163    
/19:18517   /20:23089   /21:23139   /22:30043   /23:29643   /24:170473  
/25:1046    /26:1310    /27:768     /28:28      /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2490          3889      bellsouth.net, inc. 
 4766     1487          1857      Korea Telecom (KIX)
 4323     1394          2723      Time Warner Telecom
 1785     1242          1780      PaeTec Communications, Inc.
17488     1078          1334      Hathway IP Over Cable Interne
18566     1069          1088      Covad Communications 
11492     1067          1158      Cable One 
 8452     1000          1107      TEDATA
10620      988          1072      TVCABLE BOGOTA 
19262      912          1942      Verizon Global Networks 

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

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

   1:12        2:2         4:13        8:290      12:2018     13:7      
  14:1        15:21       16:3        17:8        20:6        24:1463   
  27:251      31:1        32:49       33:12       38:691      40:98     
  41:2441     44:3        46:10       47:17       52:9        55:5      
  56:2        57:28       58:761      59:504      60:462      61:1068   
  62:1034     63:1972     64:3693     65:2344     66:4046     67:1823   
  68:1093     69:2705     70:708      71:446      72:1946     73:2      
  74:2261     75:250      76:318      77:900      78:622      79:433    
  80:995      81:767      82:495      83:439      84:682      85:1044   
  86:457      87:685      88:340      89:1560     90:95       91:2895   
  92:506      93:991      94:1403     95:654      96:528      97:210    
  98:614      99:33      108:105     109:583     110:391     111:533    
 112:287     113:327     114:437     115:573     116:1083    117:654    
 118:481     119:877     120:135     121:727     122:1564    123:948    
 124:1115    125:1312    128:227     129:198     130:193     131:557    
 132:247     133:17      134:195     135:45      136:242     137:145    
 138:265     139:104     140:484     141:196     142:342     143:373    
 144:465     145:50      146:450     147:168     148:662     149:290    
 150:155     151:230     152:296     153:168     154:2       155:357    
 156:159     157:324     158:110     159:357     160:317     161:183    
 162:255     163:174     164:410     165:367     166:460     167:414    
 168:646     169:157     170:716     171:59      172:2       173:950    
 174:502     175:152     176:1       178:314     180:466     182:198    
 183:240     184:115     186:519     187:379     188:1012    189:750    
 190:3817    192:5742    193:4721    194:3408    195:2808    196:1188   
 198:3572    199:3480    200:5324    201:1551    202:7989    203:8353   
 204:4073    205:2311    206:2493    207:3112    208:3866    209:3458   
 210:2558    211:1272    212:1712    213:1661    214:641     215:69     
 216:4715    217:1522    218:500     219:485     220:1144    221:402    
 222:317     223:1      

End of report




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