[Sanog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 2 18:56:35 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 03 Mar, 2012

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

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

BGP routing table entries examined:                              398919
    Prefixes after maximum aggregation:                          170354
    Deaggregation factor:                                          2.34
    Unique aggregates announced to Internet:                     193894
Total ASes present in the Internet Routing Table:                 40219
    Prefixes per ASN:                                              9.92
Origin-only ASes present in the Internet Routing Table:           32806
Origin ASes announcing only one prefix:                           15513
Transit ASes present in the Internet Routing Table:                5413
Transit-only ASes present in the Internet Routing Table:            143
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      33
    Max AS path prepend of ASN (48687)                               24
Prefixes from unregistered ASNs in the Routing Table:               339
    Unregistered ASNs in the Routing Table:                         146
Number of 32-bit ASNs allocated by the RIRs:                       2307
Number of 32-bit ASNs visible in the Routing Table:                2000
Prefixes from 32-bit ASNs in the Routing Table:                    4712
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            424
Number of addresses announced to Internet:                   2523361040
    Equivalent to 150 /8s, 103 /16s and 111 /24s
    Percentage of available address space announced:               68.1
    Percentage of allocated address space announced:               68.1
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               92.0
Total number of prefixes smaller than registry allocations:      169546

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

Prefixes being announced by APNIC Region ASes:                    98087
    Total APNIC prefixes after maximum aggregation:               31882
    APNIC Deaggregation factor:                                    3.08
Prefixes being announced from the APNIC address blocks:           94440
    Unique aggregates announced from the APNIC address blocks:    39376
APNIC Region origin ASes present in the Internet Routing Table:    4666
    APNIC Prefixes per ASN:                                       20.24
APNIC Region origin ASes announcing only one prefix:               1237
APNIC Region transit ASes present in the Internet Routing Table:    742
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:    157
Number of APNIC addresses announced to Internet:              641101792
    Equivalent to 38 /8s, 54 /16s and 111 /24s
    Percentage of available APNIC address space announced:         81.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 132096-133119
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, 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:                    148580
    Total ARIN prefixes after maximum aggregation:                75492
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           120266
    Unique aggregates announced from the ARIN address blocks:     49674
ARIN Region origin ASes present in the Internet Routing Table:    14926
    ARIN Prefixes per ASN:                                         8.06
ARIN Region origin ASes announcing only one prefix:                5685
ARIN Region transit ASes present in the Internet Routing Table:    1571
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          22
Number of ARIN region 32-bit ASNs visible in the Routing Table:      15
Number of ARIN addresses announced to Internet:               805413120
    Equivalent to 48 /8s, 1 /16s and 161 /24s
    Percentage of available ARIN address space announced:          64.0

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,  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, 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:                     99868
    Total RIPE prefixes after maximum aggregation:                52724
    RIPE Deaggregation factor:                                     1.89
Prefixes being announced from the RIPE address blocks:            91478
    Unique aggregates announced from the RIPE address blocks:     56727
RIPE Region origin ASes present in the Internet Routing Table:    16343
    RIPE Prefixes per ASN:                                         5.60
RIPE Region origin ASes announcing only one prefix:                7994
RIPE Region transit ASes present in the Internet Routing Table:    2621
Average RIPE Region AS path length visible:                         4.7
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1391
Number of RIPE addresses announced to Internet:               501247240
    Equivalent to 29 /8s, 224 /16s and 109 /24s
    Percentage of available RIPE address space announced:          80.7

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
                       196608-198655
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,
                       176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
                       213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   38718
    Total LACNIC prefixes after maximum aggregation:               8058
    LACNIC Deaggregation factor:                                   4.80
Prefixes being announced from the LACNIC address blocks:          38269
    Unique aggregates announced from the LACNIC address blocks:   19523
LACNIC Region origin ASes present in the Internet Routing Table:   1553
    LACNIC Prefixes per ASN:                                      24.64
LACNIC Region origin ASes announcing only one prefix:               428
LACNIC Region transit ASes present in the Internet Routing Table:   276
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   434
Number of LACNIC addresses announced to Internet:              97556872
    Equivalent to 5 /8s, 208 /16s and 153 /24s
    Percentage of available LACNIC address space announced:        64.6

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,
                       200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   8763
    Total AfriNIC prefixes after maximum aggregation:              2091
    AfriNIC Deaggregation factor:                                  4.19
Prefixes being announced from the AfriNIC address blocks:          6769
    Unique aggregates announced from the AfriNIC address blocks:   2141
AfriNIC Region origin ASes present in the Internet Routing Table:   518
    AfriNIC Prefixes per ASN:                                     13.07
AfriNIC Region origin ASes announcing only one prefix:              169
AfriNIC Region transit ASes present in the Internet Routing Table:  121
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:    3
Number of AfriNIC addresses announced to Internet:             31557120
    Equivalent to 1 /8s, 225 /16s and 134 /24s
    Percentage of available AfriNIC address space announced:       47.0

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2486      11107         988   Korea Telecom (KIX)
17974     1732        503          37   PT TELEKOMUNIKASI INDONESIA
 7545     1645        303          85   TPG Internet Pty Ltd
 4755     1559        385         157   TATA Communications formerly 
 9829     1182        997          29   BSNL National Internet Backbo
 7552     1154       1062          11   Vietel Corporation
 4808     1146       2101         316   CNCGROUP IP network: China169
 9583     1131         83         481   Sify Limited
24560     1012        385         167   Bharti Airtel Ltd., Telemedia
18101      949        130         155   Reliance Infocom Ltd Internet

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     3432       3807         199   bellsouth.net, inc. 
 7029     3418       1014         159   Windstream Communications Inc
18566     2090        382         177   Covad Communications 
 1785     1874        680         127   PaeTec Communications, Inc.
20115     1631       1550         632   Charter Communications 
 4323     1611       1059         384   Time Warner Telecom
22773     1538       2910         110   Cox Communications, Inc.
30036     1408        254         742   Mediacom Communications Corp 
19262     1389       4703         398   Verizon Global Networks 
 7018     1284       6962         842   AT&T WorldNet Services

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     1860        544          16   Corbina telecom
 2118     1421         97          13   EUnet/RELCOM Autonomous Syste
15557     1088       2184          60   LDCOM NETWORKS
34984      657        188         171   BILISIM TELEKOM
 6830      642       1927         413   UPC Distribution Services
20940      633        203         482   Akamai Technologies European 
12479      610        644          55   Uni2 Autonomous System
 8551      599        360          81   Bezeq International
31148      540         37           9   FreeNet ISP
 3320      532       8442         398   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     1758        325         169   TVCABLE BOGOTA 
28573     1672       1089          60   NET Servicos de Comunicao S.A
 8151     1486       3013         346   UniNet S.A. de C.V. 
 7303     1328        822         186   Telecom Argentina Stet-France
26615      881        664          33   Tim Brasil S.A.
27947      667         68         107   Telconet S.A
11172      634         91          72   Servicios Alestra S.A de C.V 
22047      581        322          17   VTR PUNTO NET S.A. 
 6503      573        418          66   AVANTEL, S.A. 
 3816      561        240          89   Empresa Nacional de Telecomun

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     1249        958          13   TEDATA
24863      834        274          37   LINKdotNET AS number
 6713      490        649          18   Itissalat Al-MAGHRIB
 3741      277        923         228   The Internet Solution 
15706      227         32           6   Sudatel Internet Exchange Aut
29571      211         16          10   Ci Telecom Autonomous system 
12258      197         28          62   Vodacom Internet Company 
24835      194         80           8   RAYA Telecom - Egypt
33776      169         12          16   Starcomms Nigeria Limited
36923      157         20           4   Swift Networks Limited

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     3432       3807         199   bellsouth.net, inc. 
 7029     3418       1014         159   Windstream Communications Inc
 4766     2486      11107         988   Korea Telecom (KIX)
18566     2090        382         177   Covad Communications 
 1785     1874        680         127   PaeTec Communications, Inc.
 8402     1860        544          16   Corbina telecom
10620     1758        325         169   TVCABLE BOGOTA 
17974     1732        503          37   PT TELEKOMUNIKASI INDONESIA
28573     1672       1089          60   NET Servicos de Comunicao S.A
 7545     1645        303          85   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      3418        3259      Windstream Communications Inc
18566      2090        1913      Covad Communications 
 8402      1860        1844      Corbina telecom
 1785      1874        1747      PaeTec Communications, Inc.
17974      1732        1695      PT TELEKOMUNIKASI INDONESIA
28573      1672        1612      NET Servicos de Comunicao S.A
10620      1758        1589      TVCABLE BOGOTA 
 7545      1645        1560      TPG Internet Pty Ltd
 4766      2486        1498      Korea Telecom (KIX)
22773      1538        1428      Cox Communications, Inc.

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
32567   UNALLOCATED  12.14.170.0/24        4323       Time Warner Telecom
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
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
32873   UNALLOCATED  12.46.100.0/23       10912       InterNAP Network Ser

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
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
14.192.28.0/22       45464     Room 201, TGU Bldg
23.27.0.0/20         18779     Guru.com 
23.27.0.0/16         18779     Guru.com 

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       /9:12      /10:28      /11:81      /12:233     
/13:458     /14:817     /15:1474    /16:12170   /17:6223    /18:10408   
/19:20448   /20:28449   /21:29230   /22:39750   /23:37074   /24:208355  
/25:1204    /26:1441    /27:784     /28:170     /29:58      /30:14      
/31:0       /32:19      

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

  ASN   No of nets  Total ann.   Description
 7029     3073          3418      Windstream Communications Inc
 6389     2106          3432      bellsouth.net, inc. 
18566     2039          2090      Covad Communications 
 8402     1838          1860      Corbina telecom
10620     1655          1758      TVCABLE BOGOTA 
30036     1358          1408      Mediacom Communications Corp 
11492     1124          1161      Cable One 
 1785     1064          1874      PaeTec Communications, Inc.
 8452     1059          1249      TEDATA
 7011     1040          1156      Citizens Utilities 

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

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

   1:522       2:783       4:14        6:3         8:390      12:1964   
  13:1        14:605      15:11       16:3        17:7        20:8      
  23:135      24:1738     27:1204     31:986      32:65       33:2      
  34:2        36:9        37:217      38:779      40:116      41:2938   
  42:120      44:3        46:1382     47:3        49:334      50:510    
  52:13       54:5        55:9        56:3        57:38       58:967    
  59:497      60:287      61:1197     62:976      63:2009     64:4116   
  65:2283     66:4468     67:2035     68:1165     69:3154     70:909    
  71:409      72:1789     74:2646     75:470      76:319      77:975    
  78:968      79:492      80:1211     81:885      82:625      83:540    
  84:586      85:1160     86:723      87:913      88:334      89:1563   
  90:284      91:4531     92:515      93:1401     94:1374     95:1120   
  96:421      97:315      98:819      99:38      100:5       101:153    
 103:856     106:64      107:166     108:179     109:1529    110:723    
 111:867     112:435     113:528     114:606     115:792     116:869    
 117:710     118:905     119:1261    120:362     121:727     122:1620   
 123:1079    124:1340    125:1323    128:536     129:190     130:262    
 131:591     132:165     133:21      134:234     135:62      136:212    
 137:184     138:268     139:145     140:493     141:265     142:392    
 143:406     144:513     145:69      146:484     147:251     148:724    
 149:300     150:158     151:198     152:448     153:171     154:7      
 155:382     156:212     157:370     158:162     159:518     160:322    
 161:245     162:343     163:187     164:530     165:395     166:560    
 167:458     168:810     169:148     170:839     171:119     172:4      
 173:1706    174:597     175:420     176:529     177:483     178:1281   
 180:1193    181:68      182:746     183:284     184:437     185:1      
 186:2015    187:830     188:1058    189:1173    190:5469    192:5988   
 193:5572    194:4354    195:3404    196:1295    197:167     198:3631   
 199:4425    200:5722    201:1757    202:8385    203:8662    204:4359   
 205:2446    206:2745    207:2796    208:4059    209:3560    210:2758   
 211:1476    212:1986    213:1867    214:836     215:102     216:5022   
 217:1509    218:549     219:334     220:1231    221:564     222:322    
 223:319    

End of report


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