Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 7 13:51:56 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 08 Sep, 2012

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

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

BGP routing table entries examined:                              425836
    Prefixes after maximum aggregation:                          178207
    Deaggregation factor:                                          2.39
    Unique aggregates announced to Internet:                     207327
Total ASes present in the Internet Routing Table:                 42041
    Prefixes per ASN:                                             10.13
Origin-only ASes present in the Internet Routing Table:           33589
Origin ASes announcing only one prefix:                           15753
Transit ASes present in the Internet Routing Table:                5599
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:               715
    Unregistered ASNs in the Routing Table:                         248
Number of 32-bit ASNs allocated by the RIRs:                       3235
Number of 32-bit ASNs visible in the Routing Table:                2853
Prefixes from 32-bit ASNs in the Routing Table:                    7496
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            184
Number of addresses announced to Internet:                   2593144332
    Equivalent to 154 /8s, 144 /16s and 62 /24s
    Percentage of available address space announced:               70.0
    Percentage of allocated address space announced:               70.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               93.5
Total number of prefixes smaller than registry allocations:      150194

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

Prefixes being announced by APNIC Region ASes:                   102226
    Total APNIC prefixes after maximum aggregation:               32992
    APNIC Deaggregation factor:                                    3.10
Prefixes being announced from the APNIC address blocks:          102840
    Unique aggregates announced from the APNIC address blocks:    42607
APNIC Region origin ASes present in the Internet Routing Table:    4755
    APNIC Prefixes per ASN:                                       21.63
APNIC Region origin ASes announcing only one prefix:               1245
APNIC Region transit ASes present in the Internet Routing Table:    763
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:    297
Number of APNIC addresses announced to Internet:              707762048
    Equivalent to 42 /8s, 47 /16s and 151 /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:                    154235
    Total ARIN prefixes after maximum aggregation:                77982
    ARIN Deaggregation factor:                                     1.98
Prefixes being announced from the ARIN address blocks:           155222
    Unique aggregates announced from the ARIN address blocks:     69088
ARIN Region origin ASes present in the Internet Routing Table:    15222
    ARIN Prefixes per ASN:                                        10.20
ARIN Region origin ASes announcing only one prefix:                5736
ARIN Region transit ASes present in the Internet Routing Table:    1595
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:              1083362176
    Equivalent to 64 /8s, 146 /16s and 203 /24s
    Percentage of available ARIN address space announced:          57.3

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:                    108148
    Total RIPE prefixes after maximum aggregation:                56530
    RIPE Deaggregation factor:                                     1.91
Prefixes being announced from the RIPE address blocks:           110545
    Unique aggregates announced from the RIPE address blocks:     69820
RIPE Region origin ASes present in the Internet Routing Table:    16841
    RIPE Prefixes per ASN:                                         6.56
RIPE Region origin ASes announcing only one prefix:                8164
RIPE Region transit ASes present in the Internet Routing Table:    2710
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:    1860
Number of RIPE addresses announced to Internet:               644425956
    Equivalent to 38 /8s, 105 /16s and 40 /24s
    Percentage of available RIPE address space announced:          93.7

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:                   43718
    Total LACNIC prefixes after maximum aggregation:               8443
    LACNIC Deaggregation factor:                                   5.18
Prefixes being announced from the LACNIC address blocks:          46692
    Unique aggregates announced from the LACNIC address blocks:   22215
LACNIC Region origin ASes present in the Internet Routing Table:   1642
    LACNIC Prefixes per ASN:                                      28.44
LACNIC Region origin ASes announcing only one prefix:               435
LACNIC Region transit ASes present in the Internet Routing Table:   320
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:   673
Number of LACNIC addresses announced to Internet:             115436584
    Equivalent to 6 /8s, 225 /16s and 108 /24s
    Percentage of available LACNIC address space announced:        68.8

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:                   9877
    Total AfriNIC prefixes after maximum aggregation:              2203
    AfriNIC Deaggregation factor:                                  4.48
Prefixes being announced from the AfriNIC address blocks:         10353
    Unique aggregates announced from the AfriNIC address blocks:   3445
AfriNIC Region origin ASes present in the Internet Routing Table:   560
    AfriNIC Prefixes per ASN:                                     18.49
AfriNIC Region origin ASes announcing only one prefix:              173
AfriNIC Region transit ASes present in the Internet Routing Table:  125
Average AfriNIC Region AS path length visible:                      4.7
    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:             41688576
    Equivalent to 2 /8s, 124 /16s and 30 /24s
    Percentage of available AfriNIC address space announced:       41.4

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     2950      11125        1418   Korea Telecom (KIX)
17974     2342        702          54   PT TELEKOMUNIKASI INDONESIA
 7545     1752        301          86   TPG Internet Pty Ltd
 4755     1618        387         162   TATA Communications formerly 
 9829     1322       1101          31   BSNL National Internet Backbo
 9583     1179         87         508   Sify Limited
 4808     1121       2049         319   CNCGROUP IP network: China169
 7552     1107       1062          11   Vietel Corporation
24560     1040        386         160   Bharti Airtel Ltd., Telemedia
 9498     1002        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
 7029     3456        990         154   Windstream Communications Inc
 6389     3334       3736         184   bellsouth.net, inc. 
18566     2085        382         180   Covad Communications 
 1785     1912        678         127   PaeTec Communications, Inc.
22773     1888       2931         129   Cox Communications, Inc.
20115     1658       1578         614   Charter Communications 
 4323     1580       1026         385   Time Warner Telecom
30036     1417        279         746   Mediacom Communications Corp 
 7018     1260      10316         831   AT&T WorldNet Services
11492     1197        217         343   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     1661        544          16   Corbina telecom
 2118     1401         97          14   EUnet/RELCOM Autonomous Syste
15557     1221       2247          55   LDCOM NETWORKS
12479      830        765          82   Uni2 Autonomous System
34984      756        205         179   BILISIM TELEKOM
 6830      723       2313         447   UPC Distribution Services
31148      713         37           9   FreeNet ISP
20940      711        227         549   Akamai Technologies European 
13188      702        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
28573     2141       1248          54   NET Servicos de Comunicao S.A
10620     2132        362         221   TVCABLE BOGOTA 
 8151     1570       3032         343   UniNet S.A. de C.V. 
 7303     1564       1034         199   Telecom Argentina Stet-France
 6503     1535        451          69   AVANTEL, S.A. 
 6458      792         81          15   GUATEL 
27947      721         74          94   Telconet S.A
 3816      638        262          95   Empresa Nacional de Telecomun
11172      593         85          69   Servicios Alestra S.A de C.V 
14420      580         83         105   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      878        275          36   LINKdotNET AS number
 8452      834        958          13   TEDATA
36998      776         48           3   MOBITEL
 6713      517        650          19   Itissalat Al-MAGHRIB
24835      269         80           8   RAYA Telecom - Egypt
 3741      262        904         223   The Internet Solution 
33776      231         13          11   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
 7029     3456        990         154   Windstream Communications Inc
 6389     3334       3736         184   bellsouth.net, inc. 
 4766     2950      11125        1418   Korea Telecom (KIX)
17974     2342        702          54   PT TELEKOMUNIKASI INDONESIA
28573     2141       1248          54   NET Servicos de Comunicao S.A
10620     2132        362         221   TVCABLE BOGOTA 
18566     2085        382         180   Covad Communications 
 1785     1912        678         127   PaeTec Communications, Inc.
22773     1888       2931         129   Cox Communications, Inc.
 7545     1752        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
 6389      3334        3150      bellsouth.net, inc. 
17974      2342        2288      PT TELEKOMUNIKASI INDONESIA
28573      2141        2087      NET Servicos de Comunicao S.A
10620      2132        1911      TVCABLE BOGOTA 
18566      2085        1905      Covad Communications 
 1785      1912        1785      PaeTec Communications, Inc.
22773      1888        1759      Cox Communications, Inc.
 7545      1752        1666      TPG Internet Pty Ltd
 8402      1661        1645      Corbina telecom
 4766      2950        1532      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
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  5.149.65.0/24        35567       DASTO semtel d.o.o.
59457   UNALLOCATED  5.149.66.0/24        35567       DASTO semtel d.o.o.
59457   UNALLOCATED  5.149.67.0/24        35567       DASTO semtel d.o.o.

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

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

Network            Origin AS  Description
5.206.240.0/20       57332     TOM-NET s.c. Dariusz Koper, R
5.226.64.0/18        12741     INTERNETIA Commercial Autonom
5.226.136.0/21       25369     4u servers
5.228.0.0/16         42610     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

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     
/13:475     /14:841     /15:1541    /16:12381   /17:6415    /18:10842   
/19:21044   /20:30202   /21:32106   /22:42325   /23:39848   /24:223276  
/25:1364    /26:1592    /27:921     /28:175     /29:64      /30:18      
/31:0       /32:24      

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

  ASN   No of nets  Total ann.   Description
 7029     2812          3456      Windstream Communications Inc
18566     2035          2085      Covad Communications 
 6389     1849          3334      bellsouth.net, inc. 
 8402     1384          1661      Corbina telecom
30036     1350          1417      Mediacom Communications Corp 
22773     1231          1888      Cox Communications, Inc.
15557     1165          1221      LDCOM NETWORKS
11492     1160          1197      Cable One 
 6503     1053          1535      AVANTEL, S.A. 
 1785     1013          1912      PaeTec Communications, Inc.

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

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

   1:581       2:783       3:1         4:13        5:428       6:3      
   8:455      12:2001     13:1        14:663      15:11       16:3      
  17:6        20:27       23:203      24:1824     27:1317     31:1015   
  32:56       33:2        34:2        36:7        37:759      38:828    
  39:2        40:132      41:3133     42:158      44:3        46:1527   
  47:2        49:468      50:592      52:13       54:17       55:6      
  56:1        57:31       58:989      59:528      60:240      61:1295   
  62:1002     63:2003     64:4262     65:2241     66:4494     67:2051   
  68:1169     69:3194     70:985      71:522      72:1870     74:2583   
  75:495      76:323      77:951      78:941      79:488      80:1265   
  81:956      82:634      83:531      84:626      85:1157     86:806    
  87:924      88:350      89:1789     90:303      91:5183     92:578    
  93:1494     94:1635     95:1271     96:416      97:318      98:893    
  99:39      100:23      101:260     103:1493    105:512     106:118    
 107:198     108:444     109:1921    110:794     111:957     112:446    
 113:682     114:655     115:856     116:825     117:733     118:946    
 119:1261    120:299     121:691     122:1646    123:1170    124:1352   
 125:1270    128:549     129:186     130:282     131:631     132:302    
 133:22      134:251     135:61      136:217     137:238     138:342    
 139:187     140:502     141:280     142:486     143:366     144:487    
 145:80      146:514     147:268     148:758     149:323     150:157    
 151:177     152:451     153:182     154:20      155:420     156:222    
 157:379     158:184     159:642     160:343     161:414     162:408    
 163:190     164:693     165:416     166:560     167:544     168:959    
 169:125     170:905     171:149     172:6       173:1721    174:628    
 175:445     176:575     177:1102    178:1659    180:1344    181:134    
 182:1043    183:230     184:597     186:2195    187:1244    188:1529   
 189:1586    190:6094    192:6024    193:5720    194:4560    195:3447   
 196:1215    197:220     198:3776    199:4975    200:5994    201:1969   
 202:8712    203:8698    204:4419    205:2542    206:2752    207:2875   
 208:4057    209:3668    210:2833    211:1536    212:2025    213:1809   
 214:893     215:88      216:5140    217:1553    218:548     219:316    
 220:1239    221:532     222:339     223:378    

End of report



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