Home page logo
/

nanog logo nanog mailing list archives

Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 18 Feb 2012 04:55:41 +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 18 Feb, 2012

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

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

BGP routing table entries examined:                              398152
    Prefixes after maximum aggregation:                          169962
    Deaggregation factor:                                          2.34
    Unique aggregates announced to Internet:                     192387
Total ASes present in the Internet Routing Table:                 40142
    Prefixes per ASN:                                              9.92
Origin-only ASes present in the Internet Routing Table:           32774
Origin ASes announcing only one prefix:                           15521
Transit ASes present in the Internet Routing Table:                5396
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:               324
    Unregistered ASNs in the Routing Table:                         127
Number of 32-bit ASNs allocated by the RIRs:                       2284
Number of 32-bit ASNs visible in the Routing Table:                1972
Prefixes from 32-bit ASNs in the Routing Table:                    4748
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            225
Number of addresses announced to Internet:                   2516085584
    Equivalent to 149 /8s, 248 /16s and 107 /24s
    Percentage of available address space announced:               67.9
    Percentage of allocated address space announced:               67.9
    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:      169239

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

Prefixes being announced by APNIC Region ASes:                    98012
    Total APNIC prefixes after maximum aggregation:               31831
    APNIC Deaggregation factor:                                    3.08
Prefixes being announced from the APNIC address blocks:           94322
    Unique aggregates announced from the APNIC address blocks:    39128
APNIC Region origin ASes present in the Internet Routing Table:    4661
    APNIC Prefixes per ASN:                                       20.24
APNIC Region origin ASes announcing only one prefix:               1240
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:                         24
Number of APNIC region 32-bit ASNs visible in the Routing Table:    149
Number of APNIC addresses announced to Internet:              636127072
    Equivalent to 37 /8s, 234 /16s and 135 /24s
    Percentage of available APNIC address space announced:         80.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 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:                    148390
    Total ARIN prefixes after maximum aggregation:                75337
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           120289
    Unique aggregates announced from the ARIN address blocks:     49478
ARIN Region origin ASes present in the Internet Routing Table:    14911
    ARIN Prefixes per ASN:                                         8.07
ARIN Region origin ASes announcing only one prefix:                5685
ARIN Region transit ASes present in the Internet Routing Table:    1565
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:               805086400
    Equivalent to 47 /8s, 252 /16s and 164 /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:                     99249
    Total RIPE prefixes after maximum aggregation:                52504
    RIPE Deaggregation factor:                                     1.89
Prefixes being announced from the RIPE address blocks:            90947
    Unique aggregates announced from the RIPE address blocks:     55992
RIPE Region origin ASes present in the Internet Routing Table:    16316
    RIPE Prefixes per ASN:                                         5.57
RIPE Region origin ASes announcing only one prefix:                7989
RIPE Region transit ASes present in the Internet Routing Table:    2603
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:    1356
Number of RIPE addresses announced to Internet:               501182472
    Equivalent to 29 /8s, 223 /16s and 112 /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:                   38624
    Total LACNIC prefixes after maximum aggregation:               8109
    LACNIC Deaggregation factor:                                   4.76
Prefixes being announced from the LACNIC address blocks:          38253
    Unique aggregates announced from the LACNIC address blocks:   19501
LACNIC Region origin ASes present in the Internet Routing Table:   1574
    LACNIC Prefixes per ASN:                                      24.30
LACNIC Region origin ASes announcing only one prefix:               443
LACNIC Region transit ASes present in the Internet Routing Table:   291
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   448
Number of LACNIC addresses announced to Internet:              96604808
    Equivalent to 5 /8s, 194 /16s and 18 /24s
    Percentage of available LACNIC address space announced:        64.0

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:                   8956
    Total AfriNIC prefixes after maximum aggregation:              2096
    AfriNIC Deaggregation factor:                                  4.27
Prefixes being announced from the AfriNIC address blocks:          6976
    Unique aggregates announced from the AfriNIC address blocks:   2176
AfriNIC Region origin ASes present in the Internet Routing Table:   514
    AfriNIC Prefixes per ASN:                                     13.57
AfriNIC Region origin ASes announcing only one prefix:              164
AfriNIC Region transit ASes present in the Internet Routing Table:  118
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:             30956544
    Equivalent to 1 /8s, 216 /16s and 92 /24s
    Percentage of available AfriNIC address space announced:       46.1

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         989   Korea Telecom (KIX)
17974     1729        501          36   PT TELEKOMUNIKASI INDONESIA
 7545     1643        303          86   TPG Internet Pty Ltd
 4755     1550        385         160   TATA Communications formerly 
 7552     1267       1064           7   Vietel Corporation
 9829     1181        997          29   BSNL National Internet Backbo
 4808     1149       2114         318   CNCGROUP IP network: China169
 9583     1124         84         482   Sify Limited
24560     1019        385         167   Bharti Airtel Ltd., Telemedia
18101      950        130         156   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     3440       3807         201   bellsouth.net, inc. 
 7029     3389       1014         159   Windstream Communications Inc
18566     2091        382         177   Covad Communications 
 1785     1871        680         126   PaeTec Communications, Inc.
20115     1627       1550         630   Charter Communications 
 4323     1608       1062         384   Time Warner Telecom
22773     1527       2910         110   Cox Communications, Inc.
30036     1400        248         750   Mediacom Communications Corp 
19262     1388       4703         397   Verizon Global Networks 
 7018     1307       6996         848   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     1768        480          15   Corbina telecom
 2118     1399         97          13   EUnet/RELCOM Autonomous Syste
15557     1098       2184          60   LDCOM NETWORKS
34984      653        188         173   BILISIM TELEKOM
 6830      644       1927         413   UPC Distribution Services
20940      615        198         472   Akamai Technologies European 
12479      605        643          54   Uni2 Autonomous System
 8551      576        360          81   Bezeq International
31148      538         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     1744        323         172   TVCABLE BOGOTA 
28573     1671       1085          65   NET Servicos de Comunicao S.A
 8151     1475       3007         345   UniNet S.A. de C.V. 
 7303     1263        758         182   Telecom Argentina Stet-France
26615      860        672          33   Tim Brasil S.A.
27947      661         67         108   Telconet S.A
11172      631         91          73   Servicios Alestra S.A de C.V 
22047      581        322          17   VTR PUNTO NET S.A. 
 6503      552        418          66   AVANTEL, S.A. 
 3816      551        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     1232        958          13   TEDATA
24863      830        156          44   LINKdotNET AS number
 6713      489        649          18   Itissalat Al-MAGHRIB
 3741      278        939         229   The Internet Solution 
33776      237         13          14   Starcomms Nigeria Limited
15706      222         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
16637      163        664          82   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     3440       3807         201   bellsouth.net, inc. 
 7029     3389       1014         159   Windstream Communications Inc
 4766     2485      11107         989   Korea Telecom (KIX)
18566     2091        382         177   Covad Communications 
 1785     1871        680         126   PaeTec Communications, Inc.
 8402     1768        480          15   Corbina telecom
10620     1744        323         172   TVCABLE BOGOTA 
17974     1729        501          36   PT TELEKOMUNIKASI INDONESIA
28573     1671       1085          65   NET Servicos de Comunicao S.A
 7545     1643        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      3389        3230      Windstream Communications Inc
18566      2091        1914      Covad Communications 
 8402      1768        1753      Corbina telecom
 1785      1871        1745      PaeTec Communications, Inc.
17974      1729        1693      PT TELEKOMUNIKASI INDONESIA
28573      1671        1606      NET Servicos de Comunicao S.A
10620      1744        1572      TVCABLE BOGOTA 
 7545      1643        1557      TPG Internet Pty Ltd
 4766      2485        1496      Korea Telecom (KIX)
22773      1527        1417      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      /10:27      /11:80      /12:231     
/13:458     /14:814     /15:1471    /16:12149   /17:6211    /18:10346   
/19:20464   /20:28291   /21:29265   /22:39904   /23:37028   /24:207711  
/25:1186    /26:1449    /27:779     /28:168     /29:57      /30:14      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     3045          3389      Windstream Communications Inc
 6389     2110          3440      bellsouth.net, inc. 
18566     2040          2091      Covad Communications 
 8402     1747          1768      Corbina telecom
10620     1641          1744      TVCABLE BOGOTA 
30036     1354          1400      Mediacom Communications Corp 
11492     1118          1155      Cable One 
 1785     1064          1871      PaeTec Communications, Inc.
15557     1045          1098      LDCOM NETWORKS
 8452     1042          1232      TEDATA

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

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

   1:505       2:740       4:14        5:1         6:3         8:384    
  12:1960     13:1        14:597      15:11       16:3        17:7      
  20:8        23:135      24:1730     27:1186     31:945      32:65     
  33:2        34:2        36:9        37:186      38:781      40:115    
  41:3149     42:96       43:1        44:3        46:1298     47:3      
  49:331      50:501      52:13       54:2        55:10       56:3      
  57:38       58:966      59:494      60:344      61:1195     62:949    
  63:2005     64:4148     65:2284     66:4452     67:2034     68:1174   
  69:3163     70:934      71:412      72:1795     74:2658     75:463    
  76:320      77:979      78:948      79:486      80:1212     81:879    
  82:604      83:523      84:587      85:1153     86:749      87:914    
  88:338      89:1556     90:282      91:4472     92:530      93:1349   
  94:1378     95:1116     96:418      97:311      98:812      99:38     
 100:4       101:144     103:805     106:65      107:155     108:168    
 109:1489    110:700     111:851     112:437     113:527     114:602    
 115:765     116:862     117:710     118:903     119:1254    120:361    
 121:685     122:1624    123:1082    124:1333    125:1325    128:538    
 129:190     130:216     131:588     132:166     133:21      134:234    
 135:62      136:215     137:182     138:288     139:145     140:490    
 141:263     142:394     143:403     144:509     145:69      146:483    
 147:237     148:732     149:282     150:172     151:198     152:447    
 153:170     154:7       155:408     156:212     157:367     158:160    
 159:512     160:321     161:245     162:341     163:187     164:531    
 165:395     166:558     167:458     168:762     169:147     170:838    
 171:114     172:4       173:1722    174:592     175:421     176:516    
 177:503     178:1255    180:1180    181:67      182:726     183:280    
 184:430     185:1       186:2013    187:846     188:1070    189:1172   
 190:5504    192:5979    193:5532    194:4341    195:3402    196:1289   
 197:164     198:3622    199:4393    200:5704    201:1742    202:8419   
 203:8619    204:4369    205:2440    206:2744    207:2781    208:4076   
 209:3557    210:2760    211:1481    212:2011    213:1838    214:857    
 215:91      216:5029    217:1488    218:551     219:337     220:1225   
 221:561     222:324     223:313    

End of report


  By Date           By Thread  

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