Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 14 18:50:04 UTC 2012


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 APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
TRNOG, CaribNOG and the RIPE Routing Working Group.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 15 Sep, 2012

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

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

BGP routing table entries examined:                              426606
    Prefixes after maximum aggregation:                          177882
    Deaggregation factor:                                          2.40
    Unique aggregates announced to Internet:                     207475
Total ASes present in the Internet Routing Table:                 42113
    Prefixes per ASN:                                             10.13
Origin-only ASes present in the Internet Routing Table:           33613
Origin ASes announcing only one prefix:                           15760
Transit ASes present in the Internet Routing Table:                5611
Transit-only ASes present in the Internet Routing Table:            135
Average AS path length visible in the Internet Routing Table:       4.6
    Max AS path length visible:                                      32
    Max AS path prepend of ASN ( 48687)                              24
Prefixes from unregistered ASNs in the Routing Table:               716
    Unregistered ASNs in the Routing Table:                         253
Number of 32-bit ASNs allocated by the RIRs:                       3277
Number of 32-bit ASNs visible in the Routing Table:                2889
Prefixes from 32-bit ASNs in the Routing Table:                    7687
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            177
Number of addresses announced to Internet:                   2595714508
    Equivalent to 154 /8s, 183 /16s and 117 /24s
    Percentage of available address space announced:               70.1
    Percentage of allocated address space announced:               70.1
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               93.6
Total number of prefixes smaller than registry allocations:      150375

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

Prefixes being announced by APNIC Region ASes:                   102576
    Total APNIC prefixes after maximum aggregation:               32472
    APNIC Deaggregation factor:                                    3.16
Prefixes being announced from the APNIC address blocks:          103203
    Unique aggregates announced from the APNIC address blocks:    42696
APNIC Region origin ASes present in the Internet Routing Table:    4756
    APNIC Prefixes per ASN:                                       21.70
APNIC Region origin ASes announcing only one prefix:               1234
APNIC Region transit ASes present in the Internet Routing Table:    768
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:    309
Number of APNIC addresses announced to Internet:              707879232
    Equivalent to 42 /8s, 49 /16s and 97 /24s
    Percentage of available APNIC address space announced:         82.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-133119
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 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, 150/8, 153/8,
                       163/8, 171/8, 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:                    154269
    Total ARIN prefixes after maximum aggregation:                78053
    ARIN Deaggregation factor:                                     1.98
Prefixes being announced from the ARIN address blocks:           155263
    Unique aggregates announced from the ARIN address blocks:     69144
ARIN Region origin ASes present in the Internet Routing Table:    15238
    ARIN Prefixes per ASN:                                        10.19
ARIN Region origin ASes announcing only one prefix:                5745
ARIN Region transit ASes present in the Internet Routing Table:    1599
Average ARIN Region AS path length visible:                         4.1
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:      17
Number of ARIN addresses announced to Internet:              1084171392
    Equivalent to 64 /8s, 159 /16s and 36 /24s
    Percentage of available ARIN address space announced:          57.4

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,  23/8,  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,
                        53/8,  54/8,  55/8,  56/8,  57/8,  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, 100/8, 104/8, 107/8, 108/8, 128/8,
                       129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8,
                       137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8,
                       146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8,
                       157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8,
                       165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8,
                       173/8, 174/8, 184/8, 192/8, 198/8, 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:                    108355
    Total RIPE prefixes after maximum aggregation:                56640
    RIPE Deaggregation factor:                                     1.91
Prefixes being announced from the RIPE address blocks:           110819
    Unique aggregates announced from the RIPE address blocks:     70085
RIPE Region origin ASes present in the Internet Routing Table:    16853
    RIPE Prefixes per ASN:                                         6.58
RIPE Region origin ASes announcing only one prefix:                8165
RIPE Region transit ASes present in the Internet Routing Table:    2711
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1876
Number of RIPE addresses announced to Internet:               645372900
    Equivalent to 38 /8s, 119 /16s and 155 /24s
    Percentage of available RIPE address space announced:          93.8

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, 56320-58367
                       59392-61439, 196608-199679
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  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,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   43765
    Total LACNIC prefixes after maximum aggregation:               8447
    LACNIC Deaggregation factor:                                   5.18
Prefixes being announced from the LACNIC address blocks:          46833
    Unique aggregates announced from the LACNIC address blocks:   21932
LACNIC Region origin ASes present in the Internet Routing Table:   1647
    LACNIC Prefixes per ASN:                                      28.44
LACNIC Region origin ASes announcing only one prefix:               442
LACNIC Region transit ASes present in the Internet Routing Table:   324
Average LACNIC Region AS path length visible:                       4.7
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   681
Number of LACNIC addresses announced to Internet:             116179240
    Equivalent to 6 /8s, 236 /16s and 193 /24s
    Percentage of available LACNIC address space announced:        69.2

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   9832
    Total AfriNIC prefixes after maximum aggregation:              2213
    AfriNIC Deaggregation factor:                                  4.44
Prefixes being announced from the AfriNIC address blocks:         10311
    Unique aggregates announced from the AfriNIC address blocks:   3470
AfriNIC Region origin ASes present in the Internet Routing Table:   562
    AfriNIC Prefixes per ASN:                                     18.35
AfriNIC Region origin ASes announcing only one prefix:              174
AfriNIC Region transit ASes present in the Internet Routing Table:  128
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    6
Number of AfriNIC addresses announced to Internet:             41805056
    Equivalent to 2 /8s, 125 /16s and 229 /24s
    Percentage of available AfriNIC address space announced:       41.5

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 154/8, 196/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2979      11429         904   Korea Telecom (KIX)
17974     2339        702          54   PT TELEKOMUNIKASI INDONESIA
 7545     1757        301          86   TPG Internet Pty Ltd
 4755     1617        387         162   TATA Communications formerly 
 9829     1333       1106          41   BSNL National Internet Backbo
 9583     1177         87         513   Sify Limited
 7552     1129       1062          11   Vietel Corporation
 4808     1126       2050         320   CNCGROUP IP network: China169
24560     1040        385         159   Bharti Airtel Ltd., Telemedia
 9498     1009        310          73   BHARTI Airtel Ltd.

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

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3331       3735         185   bellsouth.net, inc. 
 7029     3154        990         161   Windstream Communications Inc
18566     2085        382         180   Covad Communications 
 1785     1911        678         128   PaeTec Communications, Inc.
22773     1886       2931         129   Cox Communications, Inc.
20115     1659       1580         615   Charter Communications 
 4323     1577       1154         387   Time Warner Telecom
30036     1388        273         744   Mediacom Communications Corp 
 7018     1241      10316         827   AT&T WorldNet Services
 7011     1204        329         698   Citizens Utilities 

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8402     1654        544          16   Corbina telecom
 2118     1401         97          14   EUnet/RELCOM Autonomous Syste
15557     1226       2247          55   LDCOM NETWORKS
12479      846        773          79   Uni2 Autonomous System
34984      766        205         179   BILISIM TELEKOM
 6830      723       2313         447   UPC Distribution Services
20940      720        230         552   Akamai Technologies European 
31148      709         37           9   FreeNet ISP
13188      668        100           9   Educational Network
58113      616         69         362   LIR DATACENTER TELECOM SRL

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
10620     2155        368         223   TVCABLE BOGOTA 
28573     2145       1248          54   NET Servicos de Comunicao S.A
 8151     1580       3034         348   UniNet S.A. de C.V. 
 7303     1565       1034         199   Telecom Argentina Stet-France
 6503     1535        451          69   AVANTEL, S.A. 
 6458      751         81          15   GUATEL 
27947      722         74          94   Telconet S.A
 3816      643        310          30   Empresa Nacional de Telecomun
11172      593         85          69   Servicios Alestra S.A de C.V 
14420      581         83         100   CORPORACION NACIONAL DE TELEC

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
24863      879        275          36   LINKdotNET AS number
 8452      812        958          13   TEDATA
36998      772         48           3   MOBITEL
 6713      517        650          19   Itissalat Al-MAGHRIB
24835      269         80           8   RAYA Telecom - Egypt
 3741      263        904         223   The Internet Solution 
33776      207         12          12   Starcomms Nigeria Limited
12258      194         28          66   Vodacom Internet Company 
15706      193         32           6   Sudatel Internet Exchange Aut
29975      191        667          21   Vodacom

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3331       3735         185   bellsouth.net, inc. 
 7029     3154        990         161   Windstream Communications Inc
 4766     2979      11429         904   Korea Telecom (KIX)
17974     2339        702          54   PT TELEKOMUNIKASI INDONESIA
10620     2155        368         223   TVCABLE BOGOTA 
28573     2145       1248          54   NET Servicos de Comunicao S.A
18566     2085        382         180   Covad Communications 
 1785     1911        678         128   PaeTec Communications, Inc.
22773     1886       2931         129   Cox Communications, Inc.
 7545     1757        301          86   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 7029      3154        2993      Windstream Communications Inc
17974      2339        2285      PT TELEKOMUNIKASI INDONESIA
28573      2145        2091      NET Servicos de Comunicao S.A
 4766      2979        2075      Korea Telecom (KIX)
10620      2155        1932      TVCABLE BOGOTA 
18566      2085        1905      Covad Communications 
 1785      1911        1783      PaeTec Communications, Inc.
22773      1886        1757      Cox Communications, Inc.
 7545      1757        1671      TPG Internet Pty Ltd
 8402      1654        1638      Corbina telecom

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
59505   UNALLOCATED  5.2.65.0/24          50673       Serverius AS
59505   UNALLOCATED  5.2.66.0/24          50673       Serverius AS
59414   UNALLOCATED  5.102.144.0/21       15576       Nextra backbone in D
59395   UNALLOCATED  5.133.16.0/21        12658       Dexterity Networks L
59407   UNALLOCATED  5.134.16.0/21        51167       Giga-Hosting GmbH
59521   UNALLOCATED  5.134.192.0/21       29518       Labs2
59441   UNALLOCATED  5.144.128.0/21       50810       Mobin Net Communicat
59581   UNALLOCATED  5.149.8.0/21         25577       C4L main AS
59457   UNALLOCATED  5.149.64.0/24        35567       DASTO semtel d.o.o.
59457   UNALLOCATED  5.149.64.0/19        35567       DASTO semtel d.o.o.

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

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

Network            Origin AS  Description
5.249.176.0/20       58056     IKT, d.o.o.
5.249.192.0/19       42277     RIPE Network Coordination Cen
5.254.128.0/24       42708     RIPE Network Coordination Cen
14.192.0.0/22        45464     Room 201, TGU Bldg
14.192.4.0/22        45464     Room 201, TGU Bldg
14.192.8.0/22        45464     Room 201, TGU Bldg
14.192.12.0/22       45464     Room 201, TGU Bldg
14.192.16.0/22       45464     Room 201, TGU Bldg
14.192.20.0/22       45464     Room 201, TGU Bldg
14.192.24.0/22       45464     Room 201, TGU Bldg

Complete listing at http://thyme.rand.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        /8:18       /9:14      /10:29      /11:84      /12:237     
/13:476     /14:843     /15:1543    /16:12393   /17:6441    /18:10838   
/19:21093   /20:30253   /21:32163   /22:42398   /23:39918   /24:223596  
/25:1402    /26:1664    /27:924     /28:175     /29:62      /30:18      
/31:0       /32:24      

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

  ASN   No of nets  Total ann.   Description
 7029     2641          3154      Windstream Communications Inc
18566     2035          2085      Covad Communications 
 6389     1851          3331      bellsouth.net, inc. 
 8402     1377          1654      Corbina telecom
30036     1323          1388      Mediacom Communications Corp 
22773     1227          1886      Cox Communications, Inc.
15557     1170          1226      LDCOM NETWORKS
11492     1161          1198      Cable One 
 6503     1053          1535      AVANTEL, S.A. 
 1785     1013          1911      PaeTec Communications, Inc.

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

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

   1:604       2:600       3:1         4:13        5:485       6:3      
   8:457      12:2000     13:1        14:664      15:11       16:3      
  17:6        20:27       23:206      24:1789     27:1358     31:1022   
  32:56       33:2        34:2        36:7        37:737      38:829    
  39:2        40:133      41:3072     42:158      44:3        46:1587   
  47:2        49:476      50:595      52:13       54:18       55:9      
  56:1        57:31       58:986      59:531      60:241      61:1292   
  62:950      63:1995     64:4266     65:2240     66:4500     67:2040   
  68:1170     69:3202     70:987      71:509      72:1871     74:2599   
  75:483      76:313      77:949      78:960      79:488      80:1264   
  81:957      82:628      83:532      84:615      85:1159     86:810    
  87:923      88:363      89:1805     90:302      91:5206     92:579    
  93:1546     94:1604     95:1167     96:416      97:319      98:994    
  99:39      100:23      101:261     103:1533    105:512     106:118    
 107:198     108:455     109:1935    110:797     111:964     112:450    
 113:704     114:657     115:813     116:891     117:729     118:935    
 119:1266    120:309     121:688     122:1645    123:1161    124:1345   
 125:1284    128:549     129:184     130:282     131:633     132:301    
 133:22      134:250     135:61      136:217     137:239     138:340    
 139:171     140:500     141:282     142:487     143:370     144:497    
 145:80      146:515     147:257     148:757     149:324     150:157    
 151:170     152:450     153:183     154:20      155:419     156:222    
 157:381     158:186     159:647     160:343     161:414     162:359    
 163:190     164:693     165:420     166:530     167:550     168:964    
 169:125     170:908     171:150     172:7       173:1688    174:612    
 175:440     176:799     177:1166    178:1645    180:1361    181:136    
 182:1052    183:295     184:605     186:2242    187:1248    188:1501   
 189:1578    190:6026    192:6030    193:5725    194:4554    195:3455   
 196:1200    197:220     198:3784    199:4996    200:5967    201:1957   
 202:8714    203:8726    204:4431    205:2548    206:2780    207:2874   
 208:4069    209:3656    210:2837    211:1533    212:2034    213:1814   
 214:883     215:87      216:5135    217:1550    218:569     219:315    
 220:1242    221:536     222:334     223:385    

End of report



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