Weekly Routing Table Report

Lori Jakab ljakab at ac.upc.edu
Fri Aug 24 17:07:32 CDT 2012


On 8/24/2012 11:33 AM, Routing Analysis Role Account wrote:

[...]

> Analysis Summary
> ----------------
>
> BGP routing table entries examined:                              264582

Isn't this supposed to be >400K? What happened this week?

-Lori

>     Prefixes after maximum aggregation:                           97761
>     Deaggregation factor:                                          2.71
>     Unique aggregates announced to Internet:                     119633
> Total ASes present in the Internet Routing Table:                 29036
>     Prefixes per ASN:                                              9.11
> Origin-only ASes present in the Internet Routing Table:           22245
> Origin ASes announcing only one prefix:                           11565
> Transit ASes present in the Internet Routing Table:                4486
> Transit-only ASes present in the Internet Routing Table:            492
> Average AS path length visible in the Internet Routing Table:       4.6
>     Max AS path length visible:                                      32
>     Max AS path prepend of ASN ( 48687)                              24
> Prefixes from unregistered ASNs in the Routing Table:               435
>     Unregistered ASNs in the Routing Table:                         144
> Number of 32-bit ASNs allocated by the RIRs:                       3169
> Number of 32-bit ASNs visible in the Routing Table:                2305
> Prefixes from 32-bit ASNs in the Routing Table:                    6164
> Special use prefixes present in the Routing Table:                    0
> Prefixes being announced from unallocated address space:             74
> Number of addresses announced to Internet:                   2132781732
>     Equivalent to 127 /8s, 31 /16s and 170 /24s
>     Percentage of available address space announced:               57.5
>     Percentage of allocated address space announced:               57.6
>     Percentage of available address space allocated:               99.9
>     Percentage of address space in use by end-sites:               93.3
> Total number of prefixes smaller than registry allocations:      117536
>
> APNIC Region Analysis Summary
> -----------------------------
>
> Prefixes being announced by APNIC Region ASes:                    59813
>     Total APNIC prefixes after maximum aggregation:               15336
>     APNIC Deaggregation factor:                                    3.90
> Prefixes being announced from the APNIC address blocks:           60438
>     Unique aggregates announced from the APNIC address blocks:    22879
> APNIC Region origin ASes present in the Internet Routing Table:    2883
>     APNIC Prefixes per ASN:                                       20.96
> APNIC Region origin ASes announcing only one prefix:                806
> APNIC Region transit ASes present in the Internet Routing Table:    609
> Average APNIC Region AS path length visible:                        4.7
>     Max APNIC Region AS path length visible:                         26
> Number of APNIC region 32-bit ASNs visible in the Routing Table:    242
> Number of APNIC addresses announced to Internet:              551407040
>     Equivalent to 32 /8s, 221 /16s and 205 /24s
>     Percentage of available APNIC address space announced:         64.4
>
> APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
> (pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
>                        58368-59391, 131072-133119
> APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
>                         49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
>                        106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
>                        116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
>                        123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
>                        163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
>                        203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
>                        222/8, 223/8,
>
> ARIN Region Analysis Summary
> ----------------------------
>
> Prefixes being announced by ARIN Region ASes:                     96228
>     Total ARIN prefixes after maximum aggregation:                43322
>     ARIN Deaggregation factor:                                     2.22
> Prefixes being announced from the ARIN address blocks:            97518
>     Unique aggregates announced from the ARIN address blocks:     38278
> ARIN Region origin ASes present in the Internet Routing Table:    10585
>     ARIN Prefixes per ASN:                                         9.21
> ARIN Region origin ASes announcing only one prefix:                4892
> ARIN Region transit ASes present in the Internet Routing Table:    1244
> Average ARIN Region AS path length visible:                         4.0
>     Max ARIN Region AS path length visible:                          24
> Number of ARIN region 32-bit ASNs visible in the Routing Table:       7
> Number of ARIN addresses announced to Internet:               937035712
>     Equivalent to 55 /8s, 218 /16s and 7 /24s
>     Percentage of available ARIN address space announced:          49.6
>
> ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
> (pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
>                        3354-4607, 4865-5119, 5632-6655, 6912-7466
>                        7723-8191, 10240-12287, 13312-15359, 16384-17407
>                        18432-20479, 21504-23551, 25600-26591,
>                        26624-27647, 29696-30719, 31744-33791
>                        35840-36863, 39936-40959, 46080-47103
>                        53248-55295, 393216-394239
> ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
>                         12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
>                         20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
>                         29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
>                         40/8,  44/8,  45/8,  47/8,  48/8,  50/8,  52/8,
>                         53/8,  54/8,  55/8,  56/8,  57/8,  63/8,  64/8,
>                         65/8,  66/8,  67/8,  68/8,  69/8,  70/8,  71/8,
>                         72/8,  73/8,  74/8,  75/8,  76/8,  96/8,  97/8,
>                         98/8,  99/8, 100/8, 104/8, 107/8, 108/8, 128/8,
>                        129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8,
>                        137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8,
>                        146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8,
>                        157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8,
>                        165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8,
>                        173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8,
>                        205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8,
>                        216/8,
>
> RIPE Region Analysis Summary
> ----------------------------
>
> Prefixes being announced by RIPE Region ASes:                     74529
>     Total RIPE prefixes after maximum aggregation:                34410
>     RIPE Deaggregation factor:                                     2.17
> Prefixes being announced from the RIPE address blocks:            76326
>     Unique aggregates announced from the RIPE address blocks:     45907
> RIPE Region origin ASes present in the Internet Routing Table:    11345
>     RIPE Prefixes per ASN:                                         6.73
> RIPE Region origin ASes announcing only one prefix:                5497
> RIPE Region transit ASes present in the Internet Routing Table:    2197
> Average RIPE Region AS path length visible:                         5.1
>     Max RIPE Region AS path length visible:                          32
> Number of RIPE region 32-bit ASNs visible in the Routing Table:    1423
> Number of RIPE addresses announced to Internet:               548373764
>     Equivalent to 32 /8s, 175 /16s and 133 /24s
>     Percentage of available RIPE address space announced:          79.7
>
> RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
> (pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
>                        6656-6911, 8192-9215, 12288-13311, 15360-16383
>                        20480-21503, 24576-25599, 28672-29695
>                        30720-31743, 33792-35839, 38912-39935
>                        40960-45055, 47104-52223, 56320-58367
>                        59392-61439, 196608-199679
> RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
>                         62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
>                         83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
>                         90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
>                        141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
>                        193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
>
> LACNIC Region Analysis Summary
> ------------------------------
>
> Prefixes being announced by LACNIC Region ASes:                   20998
>     Total LACNIC prefixes after maximum aggregation:               3524
>     LACNIC Deaggregation factor:                                   5.96
> Prefixes being announced from the LACNIC address blocks:          23232
>     Unique aggregates announced from the LACNIC address blocks:   10439
> LACNIC Region origin ASes present in the Internet Routing Table:   1009
>     LACNIC Prefixes per ASN:                                      23.02
> LACNIC Region origin ASes announcing only one prefix:               258
> LACNIC Region transit ASes present in the Internet Routing Table:   243
> Average LACNIC Region AS path length visible:                       4.5
>     Max LACNIC Region AS path length visible:                        24
> Number of LACNIC region 32-bit ASNs visible in the Routing Table:   630
> Number of LACNIC addresses announced to Internet:              72150560
>     Equivalent to 4 /8s, 76 /16s and 238 /24s
>     Percentage of available LACNIC address space announced:        43.0
>
> 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,
>                        191/8, 200/8, 201/8,
>
> AfriNIC Region Analysis Summary
> -------------------------------
>
> Prefixes being announced by AfriNIC Region ASes:                   6759
>     Total AfriNIC prefixes after maximum aggregation:              1134
>     AfriNIC Deaggregation factor:                                  5.96
> Prefixes being announced from the AfriNIC address blocks:          6994
>     Unique aggregates announced from the AfriNIC address blocks:   2064
> AfriNIC Region origin ASes present in the Internet Routing Table:   392
>     AfriNIC Prefixes per ASN:                                     17.84
> AfriNIC Region origin ASes announcing only one prefix:              112
> AfriNIC Region transit ASes present in the Internet Routing Table:   94
> 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:             23734528
>     Equivalent to 1 /8s, 106 /16s and 41 /24s
>     Percentage of available AfriNIC address space announced:       23.6
>
> AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
> AfriNIC Address Blocks  41/8, 102/8, 105/8, 154/8, 196/8, 197/8,
>
> APNIC Region per AS prefix count summary
> ----------------------------------------
>
>   ASN   No of nets  /20 equiv  MaxAgg  Description
> 17974     2051        678          47   PT TELEKOMUNIKASI INDONESIA
>  9829     1271       1068          25   BSNL National Internet Backbo
>  7545     1252        217          20   TPG Internet Pty Ltd
>  4766     1140       8409         574   Korea Telecom (KIX)
>  4755     1113        310          98   TATA Communications formerly 
>  7552     1066       1054           9   Vietel Corporation
> 24560     1017        384         140   Bharti Airtel Ltd., Telemedia
>  9498      884        276          49   BHARTI Airtel Ltd.
>  4808      726       1581         181   CNCGROUP IP network: China169
> 17488      577        135         181   Hathway IP Over Cable Interne
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
>
> ARIN Region per AS prefix count summary
> ---------------------------------------
>
>   ASN   No of nets  /20 equiv  MaxAgg  Description
>  7029     2956        878          80   Windstream Communications Inc
>  6389     2739       3537         137   bellsouth.net, inc. 
> 18566     1924        369         140   Covad Communications 
> 22773     1729       2908          64   Cox Communications, Inc.
> 20115     1590       1568         569   Charter Communications 
> 30036     1445        284         732   Mediacom Communications Corp 
> 11492     1197        217         345   Cable One 
>  7011     1157        311         676   Citizens Utilities 
>  1785     1007        378          32   PaeTec Communications, Inc.
> 19262      952       4686         386   Verizon Global Networks 
>
> 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     1561        538          12   Corbina telecom
> 15557     1182       2232          27   LDCOM NETWORKS
> 12479      818        759          79   Uni2 Autonomous System
> 20940      692        226         534   Akamai Technologies European 
> 31148      678         35           6   FreeNet ISP
> 13188      656        100           8   Educational Network
> 58113      613         69         359   LIR DATACENTER TELECOM SRL
>  8551      528        336          40   Bezeq International
> 34984      386        131          63   BILISIM TELEKOM
>  6830      379       2066         213   UPC Distribution Services
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
>
> LACNIC Region per AS prefix count summary
> -----------------------------------------
>
>   ASN   No of nets  /20 equiv  MaxAgg  Description
> 28573     1780       1042          32   NET Servicos de Comunicao S.A
>  6503     1113        360          18   AVANTEL, S.A. 
> 10620     1107        221         152   TVCABLE BOGOTA 
>  8151     1064       2424         191   UniNet S.A. de C.V. 
>  7303      997        761         111   Telecom Argentina Stet-France
> 18881      528        576          11   Global Village Telecom 
> 27747      448        104           4   Telecentro S.A.
> 27947      423         54          65   Telconet S.A
>  7738      368        704          12   Telecomunicacoes da Bahia S.A
> 14420      348         61          64   CORPORACION NACIONAL DE TELEC
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
>
> AfriNIC Region per AS prefix count summary
> ------------------------------------------
>
>   ASN   No of nets  /20 equiv  MaxAgg  Description
>  8452      855        402           8   TEDATA
> 24863      663        125          28   LINKdotNET AS number
> 36998      534         48           3   MOBITEL
>  6713      412        539          11   Itissalat Al-MAGHRIB
> 24835      213         44           5   RAYA Telecom - Egypt
> 33776      190         12          10   Starcomms Nigeria Limited
> 29975      172        665          17   Vodacom
> 12258      142         14          51   Vodacom Internet Company 
> 36923      138         20           4   Swift Networks Limited
> 29571      130         11          17   Ci Telecom Autonomous system 
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
>
> Global Per AS prefix count summary
> ----------------------------------
>
>   ASN   No of nets  /20 equiv  MaxAgg  Description
>  7029     2956        878          80   Windstream Communications Inc
>  6389     2739       3537         137   bellsouth.net, inc. 
> 17974     2051        678          47   PT TELEKOMUNIKASI INDONESIA
> 18566     1924        369         140   Covad Communications 
> 28573     1780       1042          32   NET Servicos de Comunicao S.A
> 22773     1729       2908          64   Cox Communications, Inc.
> 20115     1590       1568         569   Charter Communications 
>  8402     1561        538          12   Corbina telecom
> 30036     1445        284         732   Mediacom Communications Corp 
>  9829     1271       1068          25   BSNL National Internet Backbo
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
>
> Global Per AS Maximum Aggr summary
> ----------------------------------
>
>   ASN   No of nets  Net Savings Description
>  6389      2739        2602      bellsouth.net, inc. 
> 17974      2051        2004      PT TELEKOMUNIKASI INDONESIA
> 18566      1924        1784      Covad Communications 
> 28573      1780        1748      NET Servicos de Comunicao S.A
> 22773      1729        1665      Cox Communications, Inc.
>  8402      1561        1549      Corbina telecom
>  9829      1271        1246      BSNL National Internet Backbo
>  7545      1252        1232      TPG Internet Pty Ltd
> 15557      1182        1155      LDCOM NETWORKS
>  6503      1113        1095      AVANTEL, S.A. 
>
> Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
>
> List of Unregistered Origin ASNs (Global)
> -----------------------------------------
>
> Bad AS  Designation  Network              Transit AS  Description
> 59414   UNALLOCATED  5.102.144.0/21       15576       Nextra backbone in D
> 59395   UNALLOCATED  5.133.16.0/21        12658       Dexterity Networks L
> 59407   UNALLOCATED  5.134.16.0/21        51167       Giga-Hosting GmbH
> 59521   UNALLOCATED  5.134.192.0/21       29518       Labs2
> 59581   UNALLOCATED  5.149.8.0/21         25577       C4L main AS
> 59457   UNALLOCATED  5.149.64.0/24        35567       DASTO semtel d.o.o.
> 59457   UNALLOCATED  5.149.65.0/24        35567       DASTO semtel d.o.o.
> 59457   UNALLOCATED  5.149.66.0/24        35567       DASTO semtel d.o.o.
> 59457   UNALLOCATED  5.149.67.0/24        35567       DASTO semtel d.o.o.
> 59457   UNALLOCATED  5.149.68.0/24        35567       DASTO semtel d.o.o.
>
> Complete listing at http://thyme.rand.apnic.net/current/data-badAS
>
> Advertised Unallocated Addresses
> --------------------------------
>
> Network            Origin AS  Description
> 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
> 27.112.114.0/24      23884     Proimage Engineering and Comm
> 41.207.224.0/23      36898     UniNet Communications
>
> Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA
>
> Number of prefixes announced per prefix length (Global)
> -------------------------------------------------------
>
>  /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
>  /7:0        /8:18       /9:13      /10:26      /11:74      /12:215     
> /13:411     /14:694     /15:1253    /16:10162   /17:5045    /18:8043    
> /19:13810   /20:22484   /21:23365   /22:28877   /23:25440   /24:122522  
> /25:622     /26:961     /27:404     /28:89      /29:30      /30:7       
> /31:0       /32:17      
>
> Advertised prefixes smaller than registry allocations
> -----------------------------------------------------
>
>   ASN   No of nets  Total ann.   Description
>  7029     2468          2956      Windstream Communications Inc
> 18566     1890          1924      Covad Communications 
>  6389     1534          2739      bellsouth.net, inc. 
> 30036     1381          1445      Mediacom Communications Corp 
>  8402     1292          1561      Corbina telecom
> 22773     1167          1729      Cox Communications, Inc.
> 11492     1160          1197      Cable One 
> 15557     1156          1182      LDCOM NETWORKS
>  7011      907          1157      Citizens Utilities 
>  6503      857          1113      AVANTEL, S.A. 
>
> Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
>
> Number of /24s announced per /8 block (Global)
> ----------------------------------------------
>
>    1:557       2:768       3:1         4:13        5:364       6:3      
>    8:439      12:2006     13:1        14:647      15:11       16:3      
>   17:6        20:27       23:204      24:1804     27:1324     31:1038   
>   32:56       33:2        34:2        36:8        37:716      38:826    
>   39:1        40:133      41:2852     42:155      44:3        46:1584   
>   47:2        49:468      50:592      52:13       54:17       55:7      
>   56:1        57:31       58:990      59:523      60:238      61:1284   
>   62:991      63:2009     64:4264     65:2245     66:4520     67:2044   
>   68:1157     69:3208     70:989      71:525      72:1861     74:2572   
>   75:491      76:330      77:952      78:906      79:490      80:1276   
>   81:956      82:633      83:534      84:622      85:1136     86:787    
>   87:928      88:350      89:1809     90:301      91:5128     92:591    
>   93:1481     94:1568     95:1268     96:414      97:317      98:892    
>   99:39      100:23      101:261     103:1433    105:512     106:115    
>  107:195     108:431     109:1908    110:795     111:956     112:430    
>  113:686     114:652     115:847     116:888     117:729     118:934    
>  119:1245    120:301     121:690     122:1657    123:1171    124:1356   
>  125:1265    128:525     129:183     130:283     131:626     132:299    
>  133:22      134:246     135:61      136:218     137:239     138:338    
>  139:184     140:501     141:275     142:483     143:361     144:486    
>  145:81      146:512     147:258     148:758     149:300     150:156    
>  151:168     152:458     153:177     154:20      155:414     156:224    
>  157:382     158:179     159:631     160:348     161:409     162:404    
>  163:189     164:689     165:411     166:560     167:538     168:957    
>  169:125     170:907     171:145     172:5       173:1717    174:632    
>  175:440     176:603     177:1050    178:1692    180:1347    181:127    
>  182:1037    183:223     184:590     186:2150    187:1078    188:1440   
>  189:1545    190:1332   
>
> End of report
>




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