Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 29 13:46:27 CDT 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 30 Jun, 2012

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

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

BGP routing table entries examined:                              414947
    Prefixes after maximum aggregation:                          175422
    Deaggregation factor:                                          2.37
    Unique aggregates announced to Internet:                     202271
Total ASes present in the Internet Routing Table:                 41386
    Prefixes per ASN:                                             10.03
Origin-only ASes present in the Internet Routing Table:           33302
Origin ASes announcing only one prefix:                           15652
Transit ASes present in the Internet Routing Table:                5545
Transit-only ASes present in the Internet Routing Table:            133
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      27
    Max AS path prepend of ASN ( 51742)                              24
Prefixes from unregistered ASNs in the Routing Table:               388
    Unregistered ASNs in the Routing Table:                         122
Number of 32-bit ASNs allocated by the RIRs:                       2907
Number of 32-bit ASNs visible in the Routing Table:                2539
Prefixes from 32-bit ASNs in the Routing Table:                    6532
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            184
Number of addresses announced to Internet:                   2570382252
    Equivalent to 153 /8s, 52 /16s and 235 /24s
    Percentage of available address space announced:               69.3
    Percentage of allocated address space announced:               69.4
    Percentage of available address space allocated:               99.9
    Percentage of address space in use by end-sites:               93.0
Total number of prefixes smaller than registry allocations:      143966

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

Prefixes being announced by APNIC Region ASes:                   101216
    Total APNIC prefixes after maximum aggregation:               32691
    APNIC Deaggregation factor:                                    3.10
Prefixes being announced from the APNIC address blocks:          101660
    Unique aggregates announced from the APNIC address blocks:    41966
APNIC Region origin ASes present in the Internet Routing Table:    4712
    APNIC Prefixes per ASN:                                       21.57
APNIC Region origin ASes announcing only one prefix:               1241
APNIC Region transit ASes present in the Internet Routing Table:    752
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         24
Number of APNIC region 32-bit ASNs visible in the Routing Table:    239
Number of APNIC addresses announced to Internet:              703244928
    Equivalent to 41 /8s, 234 /16s and 170 /24s
    Percentage of available APNIC address space announced:         82.2

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:                    152291
    Total ARIN prefixes after maximum aggregation:                77306
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           153229
    Unique aggregates announced from the ARIN address blocks:     68328
ARIN Region origin ASes present in the Internet Routing Table:    15177
    ARIN Prefixes per ASN:                                        10.10
ARIN Region origin ASes announcing only one prefix:                5747
ARIN Region transit ASes present in the Internet Routing Table:    1606
Average ARIN Region AS path length visible:                         4.0
    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:              1081167232
    Equivalent to 64 /8s, 113 /16s and 77 /24s
    Percentage of available ARIN address space announced:          57.2

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:                    103797
    Total RIPE prefixes after maximum aggregation:                54908
    RIPE Deaggregation factor:                                     1.89
Prefixes being announced from the RIPE address blocks:           105956
    Unique aggregates announced from the RIPE address blocks:     66912
RIPE Region origin ASes present in the Internet Routing Table:    16636
    RIPE Prefixes per ASN:                                         6.37
RIPE Region origin ASes announcing only one prefix:                8058
RIPE Region transit ASes present in the Internet Routing Table:    2679
Average RIPE Region AS path length visible:                         4.9
    Max RIPE Region AS path length visible:                          27
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1671
Number of RIPE addresses announced to Internet:               633563396
    Equivalent to 37 /8s, 195 /16s and 105 /24s
    Percentage of available RIPE address space announced:          92.1

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:                   41665
    Total LACNIC prefixes after maximum aggregation:               8295
    LACNIC Deaggregation factor:                                   5.02
Prefixes being announced from the LACNIC address blocks:          44210
    Unique aggregates announced from the LACNIC address blocks:   21613
LACNIC Region origin ASes present in the Internet Routing Table:   1607
    LACNIC Prefixes per ASN:                                      27.51
LACNIC Region origin ASes announcing only one prefix:               434
LACNIC Region transit ASes present in the Internet Routing Table:   306
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   607
Number of LACNIC addresses announced to Internet:             111606184
    Equivalent to 6 /8s, 166 /16s and 249 /24s
    Percentage of available LACNIC address space announced:        66.5

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:                   9252
    Total AfriNIC prefixes after maximum aggregation:              2168
    AfriNIC Deaggregation factor:                                  4.27
Prefixes being announced from the AfriNIC address blocks:          9708
    Unique aggregates announced from the AfriNIC address blocks:   3313
AfriNIC Region origin ASes present in the Internet Routing Table:   549
    AfriNIC Prefixes per ASN:                                     17.68
AfriNIC Region origin ASes announcing only one prefix:              172
AfriNIC Region transit ASes present in the Internet Routing Table:  123
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:    5
Number of AfriNIC addresses announced to Internet:             40494848
    Equivalent to 2 /8s, 105 /16s and 231 /24s
    Percentage of available AfriNIC address space announced:       40.2

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     2700      11118        1203   Korea Telecom (KIX)
17974     1971        541          77   PT TELEKOMUNIKASI INDONESIA
 7545     1689        301          87   TPG Internet Pty Ltd
 4755     1597        386         154   TATA Communications formerly 
 9829     1304       1085          28   BSNL National Internet Backbo
 9583     1168         87         508   Sify Limited
 4808     1109       2052         314   CNCGROUP IP network: China169
 7552     1100       1062          11   Vietel Corporation
24560     1035        385         165   Bharti Airtel Ltd., Telemedia
 9498      968        291          64   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     3397       3790         189   bellsouth.net, inc. 
 7029     3210        986         157   Windstream Communications Inc
18566     2090        382         180   Covad Communications 
 1785     1930        681         132   PaeTec Communications, Inc.
22773     1655       2911         121   Cox Communications, Inc.
20115     1651       1573         616   Charter Communications 
 4323     1573       1043         384   Time Warner Telecom
30036     1446        272         750   Mediacom Communications Corp 
 7018     1252      10027         820   AT&T WorldNet Services
11492     1186        216         362   Cable One 

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     1675        544          16   Corbina telecom
 2118     1288         97          14   EUnet/RELCOM Autonomous Syste
12479      783        731          92   Uni2 Autonomous System
34984      716        189         175   BILISIM TELEKOM
 6830      690       2234         438   UPC Distribution Services
31148      683         37           9   FreeNet ISP
20940      663        209         513   Akamai Technologies European 
 8551      582        364          61   Bezeq International
13188      503        100          10   Educational Network
 3320      495       8443         408   Deutsche Telekom AG

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     1980        344         205   TVCABLE BOGOTA 
28573     1966       1213          54   NET Servicos de Comunicao S.A
 6503     1527        418          65   AVANTEL, S.A. 
 7303     1454        933         192   Telecom Argentina Stet-France
 8151     1370       3066         339   UniNet S.A. de C.V. 
27947      706         74          94   Telconet S.A
11172      643         91          74   Servicios Alestra S.A de C.V 
 3816      589        248          86   Empresa Nacional de Telecomun
22047      583        326          15   VTR PUNTO NET S.A. 
14117      567         65          59   Telefonica del Sur S.A. 

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
 8452     1269        958          13   TEDATA
24863      859        274          35   LINKdotNET AS number
 6713      500        649          18   Itissalat Al-MAGHRIB
24835      321         80           8   RAYA Telecom - Egypt
 3741      262        905         223   The Internet Solution 
33776      210         12          21   Starcomms Nigeria Limited
12258      197         28          62   Vodacom Internet Company 
16637      169        664          87   MTN Network Solutions
29975      167        571          19   Vodacom
15706      164         32           6   Sudatel Internet Exchange Aut

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     3397       3790         189   bellsouth.net, inc. 
 7029     3210        986         157   Windstream Communications Inc
 4766     2700      11118        1203   Korea Telecom (KIX)
18566     2090        382         180   Covad Communications 
10620     1980        344         205   TVCABLE BOGOTA 
17974     1971        541          77   PT TELEKOMUNIKASI INDONESIA
28573     1966       1213          54   NET Servicos de Comunicao S.A
 1785     1930        681         132   PaeTec Communications, Inc.
 7545     1689        301          87   TPG Internet Pty Ltd
 8402     1675        544          16   Corbina telecom

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      3210        3053      Windstream Communications Inc
28573      1966        1912      NET Servicos de Comunicao S.A
18566      2090        1910      Covad Communications 
17974      1971        1894      PT TELEKOMUNIKASI INDONESIA
 1785      1930        1798      PaeTec Communications, Inc.
10620      1980        1775      TVCABLE BOGOTA 
 8402      1675        1659      Corbina telecom
 7545      1689        1602      TPG Internet Pty Ltd
22773      1655        1534      Cox Communications, Inc.
 4766      2700        1497      Korea Telecom (KIX)

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

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

Bad AS  Designation  Network              Transit AS  Description
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.103.0/24        7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.110.0/24         701       UUNET Technologies, 
16476   UNALLOCATED  12.46.27.0/24         7018       AT&T WorldNet Servic
14764   UNALLOCATED  12.108.237.0/24       7018       AT&T WorldNet Servic
33649   UNALLOCATED  12.111.112.0/24      19029       New Edge Networks 
29760   UNALLOCATED  12.145.34.0/23        7018       AT&T WorldNet Servic

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
128.0.0.0/21         12654     RIPE NCC RIS Project
128.0.24.0/24        12654     RIPE NCC RIS Project

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

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

Network            Origin AS  Description
5.102.168.0/21       50300     Custodian Ltd.
5.104.0.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.0.0/20         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.1.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.2.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.3.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.4.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.5.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.6.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO
5.104.7.0/24         47883     KIBRIS MOBILE TELEKOMUNIKASYO

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        /8:19       /9:13      /10:28      /11:83      /12:236     
/13:464     /14:836     /15:1513    /16:12290   /17:6342    /18:10751   
/19:20840   /20:29627   /21:31358   /22:40928   /23:38970   /24:216921  
/25:1232    /26:1485    /27:864     /28:42      /29:64      /30:18      
/31:0       /32:23      

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

  ASN   No of nets  Total ann.   Description
 7029     2619          3210      Windstream Communications Inc
18566     2040          2090      Covad Communications 
 6389     1871          3397      bellsouth.net, inc. 
30036     1383          1446      Mediacom Communications Corp 
 8402     1372          1675      Corbina telecom
11492     1149          1186      Cable One 
22773     1087          1655      Cox Communications, Inc.
 6503     1059          1527      AVANTEL, S.A. 
 1785     1041          1930      PaeTec Communications, Inc.
 8452     1030          1269      TEDATA

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

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

   1:568       2:734       3:1         4:13        5:95        6:3      
   8:434      12:2010     13:1        14:632      15:12       16:3      
  17:5        20:24       23:190      24:1786     27:1317     31:997    
  32:56       33:2        34:2        36:9        37:594      38:816    
  39:1        40:128      41:3114     42:142      44:3        46:1462   
  47:2        49:419      50:564      52:13       54:12       55:7      
  56:1        57:34       58:989      59:499      60:253      61:1230   
  62:1001     63:2036     64:4253     65:2254     66:4471     67:2019   
  68:1152     69:3199     70:982      71:503      72:1834     74:2607   
  75:475      76:332      77:955      78:902      79:491      80:1219   
  81:948      82:669      83:526      84:504      85:1192     86:422    
  87:932      88:342      89:1736     90:300      91:4978     92:579    
  93:1366     94:1592     95:1239     96:372      97:318      98:906    
  99:39      100:18      101:251     103:1214    106:103     107:189    
 108:354     109:1411    110:786     111:938     112:415     113:631    
 114:650     115:826     116:928     117:733     118:923     119:1237   
 120:350     121:695     122:1671    123:1098    124:1396    125:1258   
 128:553     129:198     130:254     131:634     132:291     133:22     
 134:245     135:61      136:213     137:240     138:336     139:175    
 140:494     141:254     142:435     143:374     144:534     145:76     
 146:509     147:287     148:768     149:318     150:156     151:175    
 152:473     153:175     154:17      155:433     156:219     157:381    
 158:191     159:620     160:343     161:269     162:352     163:192    
 164:654     165:411     166:583     167:473     168:909     169:126    
 170:890     171:145     172:5       173:1765    174:627     175:430    
 176:553     177:872     178:1534    180:1267    181:98      182:1010   
 183:244     184:533     185:1       186:1864    187:1089    188:1350   
 189:1602    190:5752    192:6008    193:5546    194:4546    195:3430   
 196:1196    197:164     198:3672    199:4821    200:5924    201:1981   
 202:8683    203:8633    204:4334    205:2537    206:2806    207:2792   
 208:4043    209:3615    210:2778    211:1555    212:2029    213:1921   
 214:847     215:83      216:5111    217:1570    218:550     219:318    
 220:1233    221:570     222:321     223:353    

End of report



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