Home page logo
/

nanog logo nanog mailing list archives

Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 25 Feb 2012 04:55:14 +1000 (EST)

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 () lists apnic net

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

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

Routing Table Report   04:00 +10GMT Sat 25 Feb, 2012

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

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

BGP routing table entries examined:                              398370
    Prefixes after maximum aggregation:                          170083
    Deaggregation factor:                                          2.34
    Unique aggregates announced to Internet:                     193498
Total ASes present in the Internet Routing Table:                 40222
    Prefixes per ASN:                                              9.90
Origin-only ASes present in the Internet Routing Table:           32798
Origin ASes announcing only one prefix:                           15535
Transit ASes present in the Internet Routing Table:                5416
Transit-only ASes present in the Internet Routing Table:            144
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:               321
    Unregistered ASNs in the Routing Table:                         131
Number of 32-bit ASNs allocated by the RIRs:                       2294
Number of 32-bit ASNs visible in the Routing Table:                2008
Prefixes from 32-bit ASNs in the Routing Table:                    4823
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            303
Number of addresses announced to Internet:                   2521478992
    Equivalent to 150 /8s, 74 /16s and 183 /24s
    Percentage of available address space announced:               68.0
    Percentage of allocated address space announced:               68.0
    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:      169400

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

Prefixes being announced by APNIC Region ASes:                    97749
    Total APNIC prefixes after maximum aggregation:               31742
    APNIC Deaggregation factor:                                    3.08
Prefixes being announced from the APNIC address blocks:           94211
    Unique aggregates announced from the APNIC address blocks:    39264
APNIC Region origin ASes present in the Internet Routing Table:    4664
    APNIC Prefixes per ASN:                                       20.20
APNIC Region origin ASes announcing only one prefix:               1235
APNIC Region transit ASes present in the Internet Routing Table:    738
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:    151
Number of APNIC addresses announced to Internet:              639946592
    Equivalent to 38 /8s, 36 /16s and 207 /24s
    Percentage of available APNIC address space announced:         81.2

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 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:                    148408
    Total ARIN prefixes after maximum aggregation:                75382
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           120229
    Unique aggregates announced from the ARIN address blocks:     49575
ARIN Region origin ASes present in the Internet Routing Table:    14921
    ARIN Prefixes per ASN:                                         8.06
ARIN Region origin ASes announcing only one prefix:                5683
ARIN Region transit ASes present in the Internet Routing Table:    1575
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:               805439424
    Equivalent to 48 /8s, 2 /16s and 7 /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:                     99486
    Total RIPE prefixes after maximum aggregation:                52692
    RIPE Deaggregation factor:                                     1.89
Prefixes being announced from the RIPE address blocks:            91151
    Unique aggregates announced from the RIPE address blocks:     56714
RIPE Region origin ASes present in the Internet Routing Table:    16336
    RIPE Prefixes per ASN:                                         5.58
RIPE Region origin ASes announcing only one prefix:                8012
RIPE Region transit ASes present in the Internet Routing Table:    2613
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:    1380
Number of RIPE addresses announced to Internet:               500978952
    Equivalent to 29 /8s, 220 /16s and 85 /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:                   38762
    Total LACNIC prefixes after maximum aggregation:               8083
    LACNIC Deaggregation factor:                                   4.80
Prefixes being announced from the LACNIC address blocks:          38441
    Unique aggregates announced from the LACNIC address blocks:   19555
LACNIC Region origin ASes present in the Internet Routing Table:   1576
    LACNIC Prefixes per ASN:                                      24.39
LACNIC Region origin ASes announcing only one prefix:               442
LACNIC Region transit ASes present in the Internet Routing Table:   289
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   458
Number of LACNIC addresses announced to Internet:              97295240
    Equivalent to 5 /8s, 204 /16s and 155 /24s
    Percentage of available LACNIC address space announced:        64.4

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:                   8970
    Total AfriNIC prefixes after maximum aggregation:              2091
    AfriNIC Deaggregation factor:                                  4.29
Prefixes being announced from the AfriNIC address blocks:          6985
    Unique aggregates announced from the AfriNIC address blocks:   2124
AfriNIC Region origin ASes present in the Internet Routing Table:   517
    AfriNIC Prefixes per ASN:                                     13.51
AfriNIC Region origin ASes announcing only one prefix:              163
AfriNIC Region transit ASes present in the Internet Routing Table:  116
Average AfriNIC Region AS path length visible:                      4.4
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             31523072
    Equivalent to 1 /8s, 225 /16s and 1 /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     2485      11107         991   Korea Telecom (KIX)
17974     1725        503          36   PT TELEKOMUNIKASI INDONESIA
 7545     1642        303          86   TPG Internet Pty Ltd
 4755     1557        385         157   TATA Communications formerly 
 7552     1282       1064           7   Vietel Corporation
 4808     1148       2112         319   CNCGROUP IP network: China169
 9583     1126         84         483   Sify Limited
 9829     1106        996          29   BSNL National Internet Backbo
24560     1011        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     3433       3807         199   bellsouth.net, inc. 
 7029     3416       1014         159   Windstream Communications Inc
18566     2091        382         177   Covad Communications 
 1785     1873        680         126   PaeTec Communications, Inc.
20115     1629       1551         630   Charter Communications 
 4323     1607       1043         381   Time Warner Telecom
22773     1536       2910         110   Cox Communications, Inc.
30036     1415        254         745   Mediacom Communications Corp 
19262     1388       4703         398   Verizon Global Networks 
 7018     1311       6980         851   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     1753        480          15   Corbina telecom
 2118     1398         97          13   EUnet/RELCOM Autonomous Syste
15557     1099       2184          60   LDCOM NETWORKS
34984      656        188         173   BILISIM TELEKOM
 6830      644       1927         413   UPC Distribution Services
20940      627        203         480   Akamai Technologies European 
12479      608        644          55   Uni2 Autonomous System
 8551      565        360          81   Bezeq International
31148      541         37           9   FreeNet ISP
 3320      533       8450         399   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     1751        324         171   TVCABLE BOGOTA 
28573     1685       1088          62   NET Servicos de Comunicao S.A
 8151     1483       3011         349   UniNet S.A. de C.V. 
 7303     1326        822         186   Telecom Argentina Stet-France
26615      881        668          32   Tim Brasil S.A.
27947      662         67         108   Telconet S.A
11172      632         91          72   Servicios Alestra S.A de C.V 
22047      581        322          17   VTR PUNTO NET S.A. 
 6503      576        418          66   AVANTEL, S.A. 
 3816      554        237          91   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     1254        958          13   TEDATA
24863      834        274          37   LINKdotNET AS number
 6713      489        649          18   Itissalat Al-MAGHRIB
 3741      277        923         228   The Internet Solution 
15706      227         32           6   Sudatel Internet Exchange Aut
29571      214         17          12   Ci Telecom Autonomous system 
12258      197         28          62   Vodacom Internet Company 
24835      194         80           8   RAYA Telecom - Egypt
33776      182         12          20   Starcomms Nigeria Limited
16637      157        647          81   MTN Network Solutions

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     3433       3807         199   bellsouth.net, inc. 
 7029     3416       1014         159   Windstream Communications Inc
 4766     2485      11107         991   Korea Telecom (KIX)
18566     2091        382         177   Covad Communications 
 1785     1873        680         126   PaeTec Communications, Inc.
 8402     1753        480          15   Corbina telecom
10620     1751        324         171   TVCABLE BOGOTA 
17974     1725        503          36   PT TELEKOMUNIKASI INDONESIA
28573     1685       1088          62   NET Servicos de Comunicao S.A
 7545     1642        303          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      3416        3257      Windstream Communications Inc
18566      2091        1914      Covad Communications 
 1785      1873        1747      PaeTec Communications, Inc.
 8402      1753        1738      Corbina telecom
17974      1725        1689      PT TELEKOMUNIKASI INDONESIA
28573      1685        1623      NET Servicos de Comunicao S.A
10620      1751        1580      TVCABLE BOGOTA 
 7545      1642        1556      TPG Internet Pty Ltd
 4766      2485        1494      Korea Telecom (KIX)
22773      1536        1426      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
23.27.0.0/16         18779     Guru.com 
27.112.114.0/24      23884     Proimage Engineering and Comm

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      /12:232     
/13:459     /14:812     /15:1473    /16:12149   /17:6216    /18:10375   
/19:20480   /20:28362   /21:29291   /22:39795   /23:37056   /24:207890  
/25:1174    /26:1425    /27:782     /28:170     /29:56      /30:14      
/31:0       /32:19      

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

  ASN   No of nets  Total ann.   Description
 7029     3070          3416      Windstream Communications Inc
 6389     2107          3433      bellsouth.net, inc. 
18566     2040          2091      Covad Communications 
 8402     1732          1753      Corbina telecom
10620     1648          1751      TVCABLE BOGOTA 
30036     1365          1415      Mediacom Communications Corp 
11492     1122          1159      Cable One 
 1785     1064          1873      PaeTec Communications, Inc.
 8452     1062          1254      TEDATA
15557     1046          1099      LDCOM NETWORKS

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

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

   1:503       2:712       4:14        6:3         8:387      12:1962   
  13:1        14:595      15:11       16:3        17:7        20:8      
  23:134      24:1736     27:1195     31:944      32:65       33:2      
  34:2        36:9        37:198      38:781      40:116      41:3117   
  42:112      43:1        44:3        46:1324     47:3        49:319    
  50:509      52:13       54:2        55:7        56:3        57:38     
  58:965      59:494      60:344      61:1189     62:966      63:2010   
  64:4122     65:2285     66:4460     67:2020     68:1167     69:3163   
  70:909      71:406      72:1791     74:2648     75:470      76:320    
  77:970      78:958      79:509      80:1224     81:878      82:629    
  83:528      84:585      85:1155     86:728      87:912      88:334    
  89:1564     90:282      91:4501     92:510      93:1351     94:1386   
  95:1118     96:421      97:311      98:831      99:38      100:4      
 101:154     103:830     106:66      107:161     108:176     109:1542   
 110:708     111:853     112:435     113:528     114:601     115:779    
 116:870     117:710     118:906     119:1258    120:364     121:690    
 122:1617    123:1078    124:1329    125:1316    128:536     129:190    
 130:217     131:590     132:162     133:21      134:234     135:62     
 136:214     137:183     138:268     139:145     140:468     141:261    
 142:394     143:420     144:515     145:69      146:486     147:240    
 148:734     149:300     150:163     151:198     152:448     153:171    
 154:7       155:395     156:212     157:370     158:163     159:517    
 160:319     161:245     162:342     163:181     164:523     165:393    
 166:559     167:459     168:737     169:148     170:838     171:118    
 172:4       173:1721    174:598     175:422     176:507     177:507    
 178:1282    180:1184    181:68      182:736     183:281     184:432    
 185:1       186:2039    187:856     188:1084    189:1186    190:5463   
 192:5970    193:5539    194:4344    195:3394    196:1288    197:167    
 198:3622    199:4415    200:5710    201:1737    202:8401    203:8633   
 204:4362    205:2441    206:2741    207:2795    208:4067    209:3551   
 210:2752    211:1476    212:2015    213:1843    214:837     215:101    
 216:5030    217:1501    218:547     219:337     220:1224    221:562    
 222:324     223:312    

End of report


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
AlienVault