[lacnog] Weekly Routing Table Report

Routing Analysis Role Account cscora en apnic.net
Vie Nov 11 17:18:28 BRST 2011


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,
CaribNOG and the RIPE Routing Working Group.

Daily listings are sent to bgp-stats en lists.apnic.net

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

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

Routing Table Report   04:00 +10GMT Sat 12 Nov, 2011

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

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

BGP routing table entries examined:                              381658
    Prefixes after maximum aggregation:                          166539
    Deaggregation factor:                                          2.29
    Unique aggregates announced to Internet:                     187635
Total ASes present in the Internet Routing Table:                 39286
    Prefixes per ASN:                                              9.71
Origin-only ASes present in the Internet Routing Table:           32382
Origin ASes announcing only one prefix:                           15485
Transit ASes present in the Internet Routing Table:                5290
Transit-only ASes present in the Internet Routing Table:            133
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:              1677
    Unregistered ASNs in the Routing Table:                         881
Number of 32-bit ASNs allocated by the RIRs:                       1940
Number of 32-bit ASNs visible in the Routing Table:                1614
Prefixes from 32-bit ASNs in the Routing Table:                    3721
Special use prefixes present in the Routing Table:                    3
Prefixes being announced from unallocated address space:             87
Number of addresses announced to Internet:                   2490142976
    Equivalent to 148 /8s, 108 /16s and 145 /24s
    Percentage of available address space announced:               67.2
    Percentage of allocated address space announced:               67.2
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.6
Total number of prefixes smaller than registry allocations:      161365

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

Prefixes being announced by APNIC Region ASes:                    95008
    Total APNIC prefixes after maximum aggregation:               31143
    APNIC Deaggregation factor:                                    3.05
Prefixes being announced from the APNIC address blocks:           91456
    Unique aggregates announced from the APNIC address blocks:    38380
APNIC Region origin ASes present in the Internet Routing Table:    4602
    APNIC Prefixes per ASN:                                       19.87
APNIC Region origin ASes announcing only one prefix:               1269
APNIC Region transit ASes present in the Internet Routing Table:    720
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         21
Number of APNIC region 32-bit ASNs visible in the Routing Table:    107
Number of APNIC addresses announced to Internet:              629934432
    Equivalent to 37 /8s, 140 /16s and 9 /24s
    Percentage of available APNIC address space announced:         79.9

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:                    146101
    Total ARIN prefixes after maximum aggregation:                74287
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           118152
    Unique aggregates announced from the ARIN address blocks:     48520
ARIN Region origin ASes present in the Internet Routing Table:    14740
    ARIN Prefixes per ASN:                                         8.02
ARIN Region origin ASes announcing only one prefix:                5637
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:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:      12
Number of ARIN addresses announced to Internet:               804207808
    Equivalent to 47 /8s, 239 /16s and 60 /24s
    Percentage of available ARIN address space announced:          63.9

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:                     92019
    Total RIPE prefixes after maximum aggregation:                51066
    RIPE Deaggregation factor:                                     1.80
Prefixes being announced from the RIPE address blocks:            84487
    Unique aggregates announced from the RIPE address blocks:     54587
RIPE Region origin ASes present in the Internet Routing Table:    16107
    RIPE Prefixes per ASN:                                         5.25
RIPE Region origin ASes announcing only one prefix:                7977
RIPE Region transit ASes present in the Internet Routing Table:    2539
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:    1119
Number of RIPE addresses announced to Internet:               491921856
    Equivalent to 29 /8s, 82 /16s and 33 /24s
    Percentage of available RIPE address space announced:          79.2

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:                   36135
    Total LACNIC prefixes after maximum aggregation:               7921
    LACNIC Deaggregation factor:                                   4.56
Prefixes being announced from the LACNIC address blocks:          35567
    Unique aggregates announced from the LACNIC address blocks:   18567
LACNIC Region origin ASes present in the Internet Routing Table:   1549
    LACNIC Prefixes per ASN:                                      22.96
LACNIC Region origin ASes announcing only one prefix:               446
LACNIC Region transit ASes present in the Internet Routing Table:   286
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   372
Number of LACNIC addresses announced to Internet:              92919936
    Equivalent to 5 /8s, 137 /16s and 216 /24s
    Percentage of available LACNIC address space announced:        61.5

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   8487
    Total AfriNIC prefixes after maximum aggregation:              2043
    AfriNIC Deaggregation factor:                                  4.15
Prefixes being announced from the AfriNIC address blocks:          6576
    Unique aggregates announced from the AfriNIC address blocks:   2022
AfriNIC Region origin ASes present in the Internet Routing Table:   496
    AfriNIC Prefixes per ASN:                                     13.26
AfriNIC Region origin ASes announcing only one prefix:              156
AfriNIC Region transit ASes present in the Internet Routing Table:  106
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:    4
Number of AfriNIC addresses announced to Internet:             27687168
    Equivalent to 1 /8s, 166 /16s and 121 /24s
    Percentage of available AfriNIC address space announced:       41.3

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     2510      11108         968   Korea Telecom (KIX)
17974     1649        511          36   PT TELEKOMUNIKASI INDONESIA
 7545     1625        303          88   TPG Internet Pty Ltd
 4755     1544        377         172   TATA Communications formerly 
 7552     1394       1064           7   Vietel Corporation
 9829     1166        989          28   BSNL National Internet Backbo
 9583     1116         83         512   Sify Limited
 4808     1093       2095         313   CNCGROUP IP network: China169
24560      964        343         218   Bharti Airtel Ltd., Telemedia
18101      953        119         149   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     3544       3814         219   bellsouth.net, inc. 
 7029     2918       1016         199   Windstream Communications Inc
18566     2093        383         177   Covad Communications 
 1785     1847        680         122   PaeTec Communications, Inc.
 4323     1622       1077         387   Time Warner Telecom
20115     1595       1545         624   Charter Communications 
22773     1495       2909         102   Cox Communications, Inc.
30036     1415        255         671   Mediacom Communications Corp 
19262     1395       4728         400   Verizon Global Networks 
 7018     1314       7029         862   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     1519        416          14   Corbina telecom
 6830      646       1927         411   UPC Distribution Services
34984      596        110         184   BILISIM TELEKOM
20940      551        182         433   Akamai Technologies European 
 3320      503       8168         388   Deutsche Telekom AG
 3292      479       2074         407   TDC Tele Danmark
12479      479        596           9   Uni2 Autonomous System
 8866      463        133          26   Bulgarian Telecommunication C
31148      408         22         114   FreeNet ISP
 8551      402        354          43   Bezeq International

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     1706        316         157   TVCABLE BOGOTA 
28573     1490       1043          79   NET Servicos de Comunicao S.A
 8151     1446       2937         346   UniNet S.A. de C.V. 
 7303     1238        751         173   Telecom Argentina Stet-France
27947      591         72          84   Telconet S.A
22047      580        322          17   VTR PUNTO NET S.A. 
 6503      566        434          68   AVANTEL, S.A. 
 7738      553       1050          31   Telecomunicacoes da Bahia S.A
 3816      539        234          96   Empresa Nacional de Telecomun
11172      525         85          95   Servicios Alestra S.A de C.V 

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      716        146          36   LINKdotNET AS number
 8452      665        446          12   TEDATA
15475      444         74           8   Nile Online
36992      285        415          20   Etisalat MISR
 3741      281        939         230   The Internet Solution 
15706      240         32           6   Sudatel Internet Exchange Aut
33776      239         13           8   Starcomms Nigeria Limited
 6713      235        519          14   Itissalat Al-MAGHRIB
29571      218         17          13   Ci Telecom Autonomous system 
12258      196         28          57   Vodacom Internet Company 

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     3544       3814         219   bellsouth.net, inc. 
 7029     2918       1016         199   Windstream Communications Inc
 4766     2510      11108         968   Korea Telecom (KIX)
18566     2093        383         177   Covad Communications 
 1785     1847        680         122   PaeTec Communications, Inc.
10620     1706        316         157   TVCABLE BOGOTA 
17974     1649        511          36   PT TELEKOMUNIKASI INDONESIA
 7545     1625        303          88   TPG Internet Pty Ltd
 4323     1622       1077         387   Time Warner Telecom
20115     1595       1545         624   Charter Communications 

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      2918        2719      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1847        1725      PaeTec Communications, Inc.
17974      1649        1613      PT TELEKOMUNIKASI INDONESIA
10620      1706        1549      TVCABLE BOGOTA 
 4766      2510        1542      Korea Telecom (KIX)
 7545      1625        1537      TPG Internet Pty Ltd
 8402      1519        1505      Corbina telecom
28573      1490        1411      NET Servicos de Comunicao S.A
22773      1495        1393      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
128.0.0.0/16         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
24.225.128.0/18      36377     Comcast Telecommunications, I
24.225.192.0/23      36377     Comcast Telecommunications, I
24.225.192.0/18      36377     Comcast Telecommunications, I
24.225.224.0/21      36377     Comcast Telecommunications, I
24.225.237.0/24      36377     Comcast Telecommunications, I
24.225.248.0/21      36377     Comcast Telecommunications, I
41.222.79.0/24       37345     MEDALLION Communications
41.223.92.0/22       36936     >>UNKNOWN<<
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 

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      /11:81      /12:236     
/13:465     /14:808     /15:1422    /16:12006   /17:6064    /18:10089   
/19:19963   /20:27615   /21:27723   /22:37556   /23:35208   /24:198912  
/25:1154    /26:1364    /27:759     /28:166     /29:4       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 7029     2548          2918      Windstream Communications Inc
 6389     2185          3544      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1601          1706      TVCABLE BOGOTA 
 8402     1495          1519      Corbina telecom
30036     1375          1415      Mediacom Communications Corp 
11492     1117          1154      Cable One 
 1785     1057          1847      PaeTec Communications, Inc.
 7011     1051          1168      Citizens Utilities 
22773      958          1495      Cox Communications, Inc.

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

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

   1:408       2:484       4:15        5:1         6:3         8:356    
  12:1966     13:1        14:547      15:11       16:3        17:7      
  20:9        23:63       24:1683     27:1031     31:675      32:65     
  33:2        34:2        36:4        38:756      39:1        40:110    
  41:2681     42:59       43:1        44:3        46:1050     47:3      
  49:298      50:449      52:13       55:8        56:2        57:47     
  58:920      59:496      60:362      61:1131     62:1094     63:1970   
  64:4065     65:2302     66:4319     67:2019     68:1174     69:3142   
  70:905      71:387      72:1820     74:2633     75:430      76:319    
  77:881      78:887      79:479      80:1133     81:836      82:516    
  83:518      84:621      85:1154     86:400      87:931      88:356    
  89:1591     90:235      91:4257     92:536      93:1553     94:1303   
  95:1089     96:427      97:286      98:943      99:37      101:233    
 103:459     106:7       107:91      108:76      109:1184    110:671    
 111:807     112:362     113:480     114:623     115:715     116:881    
 117:722     118:889     119:1266    120:345     121:681     122:1574   
 123:1019    124:1353    125:1355    128:246     129:184     130:164    
 131:616     132:151     133:21      134:221     135:54      136:213    
 137:142     138:287     139:121     140:494     141:253     142:389    
 143:401     144:495     145:64      146:470     147:219     148:638    
 149:270     150:164     151:194     152:449     153:172     154:7      
 155:387     156:208     157:361     158:155     159:489     160:331    
 161:214     162:374     163:173     164:506     165:368     166:544    
 167:443     168:820     169:145     170:881     171:87      172:4      
 173:1742    174:702     175:432     176:297     177:367     178:1100   
 180:1145    181:38      182:652     183:236     184:393     185:1      
 186:1401    187:774     188:963     189:1157    190:5188    192:5923   
 193:5050    194:3554    195:3109    196:1268    197:170     198:3617   
 199:4206    200:5475    201:1704    202:8553    203:8538    204:4311   
 205:2370    206:2668    207:2816    208:4025    209:3584    210:2711   
 211:1463    212:2074    213:1804    214:777     215:96      216:4930   
 217:1601    218:560     219:343     220:1257    221:515     222:324    
 223:272    

End of report



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