[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 24 18:11:28 UTC 2015


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,
CaribNOG and the RIPE Routing Working Group.

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

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

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

Routing Table Report   04:00 +10GMT Sat 25 Apr, 2015

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

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

BGP routing table entries examined:                              541795
    Prefixes after maximum aggregation (per Origin AS):          206788
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      264333
Total ASes present in the Internet Routing Table:                 50103
    Prefixes per ASN:                                             10.81
Origin-only ASes present in the Internet Routing Table:           36582
Origin ASes announcing only one prefix:                           16288
Transit ASes present in the Internet Routing Table:                6337
Transit-only ASes present in the Internet Routing Table:            175
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      44
    Max AS path prepend of ASN ( 55944)                              41
Prefixes from unregistered ASNs in the Routing Table:              1193
    Unregistered ASNs in the Routing Table:                         408
Number of 32-bit ASNs allocated by the RIRs:                       9255
Number of 32-bit ASNs visible in the Routing Table:                7184
Prefixes from 32-bit ASNs in the Routing Table:                   25851
Number of bogon 32-bit ASNs visible in the Routing Table:             2
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            360
Number of addresses announced to Internet:                   2739318436
    Equivalent to 163 /8s, 70 /16s and 174 /24s
    Percentage of available address space announced:               74.0
    Percentage of allocated address space announced:               74.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               97.3
Total number of prefixes smaller than registry allocations:      182352

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

Prefixes being announced by APNIC Region ASes:                   133662
    Total APNIC prefixes after maximum aggregation:               38993
    APNIC Deaggregation factor:                                    3.43
Prefixes being announced from the APNIC address blocks:          139448
    Unique aggregates announced from the APNIC address blocks:    56810
APNIC Region origin ASes present in the Internet Routing Table:    5040
    APNIC Prefixes per ASN:                                       27.67
APNIC Region origin ASes announcing only one prefix:               1205
APNIC Region transit ASes present in the Internet Routing Table:    875
Average APNIC Region AS path length visible:                        4.3
    Max APNIC Region AS path length visible:                         44
Number of APNIC region 32-bit ASNs visible in the Routing Table:   1395
Number of APNIC addresses announced to Internet:              747690496
    Equivalent to 44 /8s, 144 /16s and 218 /24s
    Percentage of available APNIC address space announced:         87.4

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 131072-135580
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:                    178367
    Total ARIN prefixes after maximum aggregation:                87920
    ARIN Deaggregation factor:                                     2.03
Prefixes being announced from the ARIN address blocks:           180796
    Unique aggregates announced from the ARIN address blocks:     84833
ARIN Region origin ASes present in the Internet Routing Table:    16559
    ARIN Prefixes per ASN:                                        10.92
ARIN Region origin ASes announcing only one prefix:                6097
ARIN Region transit ASes present in the Internet Routing Table:    1737
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:     409
Number of ARIN addresses announced to Internet:              1065386528
    Equivalent to 63 /8s, 128 /16s and 130 /24s
    Percentage of available ARIN address space announced:          56.4

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, 62464-63487, 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:                    131539
    Total RIPE prefixes after maximum aggregation:                65635
    RIPE Deaggregation factor:                                     2.00
Prefixes being announced from the RIPE address blocks:           137820
    Unique aggregates announced from the RIPE address blocks:     84964
RIPE Region origin ASes present in the Internet Routing Table:    17952
    RIPE Prefixes per ASN:                                         7.68
RIPE Region origin ASes announcing only one prefix:                8157
RIPE Region transit ASes present in the Internet Routing Table:    2982
Average RIPE Region AS path length visible:                         4.9
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:    3634
Number of RIPE addresses announced to Internet:               693611908
    Equivalent to 41 /8s, 87 /16s and 173 /24s
    Percentage of available RIPE address space announced:         100.8

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, 61952-62463, 196608-202239
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:                   59469
    Total LACNIC prefixes after maximum aggregation:              11181
    LACNIC Deaggregation factor:                                   5.32
Prefixes being announced from the LACNIC address blocks:          69431
    Unique aggregates announced from the LACNIC address blocks:   32265
LACNIC Region origin ASes present in the Internet Routing Table:   2426
    LACNIC Prefixes per ASN:                                      28.62
LACNIC Region origin ASes announcing only one prefix:               626
LACNIC Region transit ASes present in the Internet Routing Table:   501
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  1638
Number of LACNIC addresses announced to Internet:             167318016
    Equivalent to 9 /8s, 249 /16s and 18 /24s
    Percentage of available LACNIC address space announced:        99.7

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-265628 + 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:                  12738
    Total AfriNIC prefixes after maximum aggregation:              3015
    AfriNIC Deaggregation factor:                                  4.22
Prefixes being announced from the AfriNIC address blocks:         13940
    Unique aggregates announced from the AfriNIC address blocks:   5136
AfriNIC Region origin ASes present in the Internet Routing Table:   737
    AfriNIC Prefixes per ASN:                                     18.91
AfriNIC Region origin ASes announcing only one prefix:              203
AfriNIC Region transit ASes present in the Internet Routing Table:  158
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  108
Number of AfriNIC addresses announced to Internet:             64997120
    Equivalent to 3 /8s, 223 /16s and 199 /24s
    Percentage of available AfriNIC address space announced:       64.6

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
 4766     2923      11557         912   Korea Telecom
17974     2771        904          78   PT Telekomunikasi Indonesia
 7545     2374        336         128   TPG Telecom Limited
 4755     2012        422         214   TATA Communications formerly 
 4538     1908       4190          71   China Education and Research 
 9829     1632       1326          39   National Internet Backbone
 9808     1572       8717          28   Guangdong Mobile Communicatio
 4808     1442       2244         446   CNCGROUP IP network China169 
 9583     1409        116         575   Sify Limited
 9498     1323        334          95   BHARTI Airtel Ltd.

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
22773     3015       2956         143   Cox Communications Inc.
 6389     2832       3688          51   BellSouth.net Inc.
 3356     2559      10684         488   Level 3 Communications, Inc.
18566     2040        379         182   MegaPath Corporation
20115     1877       1840         431   Charter Communications
 6983     1755        866         245   EarthLink, Inc.
 4323     1619       1021         409   tw telecom holdings, inc.
30036     1523        309         496   Mediacom Communications Corp
  701     1407      11276         690   MCI Communications Services, 
22561     1341        412         243   CenturyTel Internet Holdings,

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
39891     2472        128           6   SaudiNet, Saudi Telecom Compa
34984     1964        303         366   TELLCOM ILETISIM HIZMETLERI A
20940     1810        702        1338   Akamai International B.V.
 6849     1214        356          24   JSC "Ukrtelecom"
 8402     1157        544          15   OJSC "Vimpelcom"
31148     1044         45          21   Freenet Ltd.
13188     1038         97          69   TOV "Bank-Inform"
12479      908        864          83   France Telecom Espana SA
 8551      886        373          48   Bezeq International-Ltd
 6830      853       2344         451   Liberty Global Operations B.V

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     3216        525         183   Telmex Colombia S.A.
28573     2349       2179         119   NET Serviços de Comunicação S
 7303     1654       1042         241   Telecom Argentina S.A.
 6147     1623        374          30   Telefonica del Peru S.A.A.
 8151     1591       3189         454   Uninet S.A. de C.V.
 6503     1252        421          57   Axtel, S.A.B. de C.V.
 7738      999       1882          41   Telemar Norte Leste S.A.
26615      983       2325          35   Tim Celular S.A.
 3816      923        418         154   COLOMBIA TELECOMUNICACIONES S
18881      865       1036          22   Global Village Telecom

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     1708        958          13   TE-AS
24863      964        284          27   Link Egypt (Link.NET)
36903      493        248          88   Office National des Postes et
36992      417       1229          32   ETISALAT MISR
37492      302        155          72   Orange Tunisie
24835      300        144           9   Vodafone Data
 3741      250        857         208   Internet Solutions
29571      231         21          12   Cote d'Ivoire Telecom
37054      199         19           6   Data Telecom Service
36947      198        807          13   Telecom Algeria

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
10620     3216        525         183   Telmex Colombia S.A.
22773     3015       2956         143   Cox Communications Inc.
 4766     2923      11557         912   Korea Telecom
 6389     2832       3688          51   BellSouth.net Inc.
17974     2771        904          78   PT Telekomunikasi Indonesia
 3356     2559      10684         488   Level 3 Communications, Inc.
39891     2472        128           6   SaudiNet, Saudi Telecom Compa
 7545     2374        336         128   TPG Telecom Limited
28573     2349       2179         119   NET Serviços de Comunicação S
18566     2040        379         182   MegaPath Corporation

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

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
22773      3015        2872      Cox Communications Inc.
 6389      2832        2781      BellSouth.net Inc.
17974      2771        2693      PT Telekomunikasi Indonesia
39891      2472        2466      SaudiNet, Saudi Telecom Compa
 7545      2374        2246      TPG Telecom Limited
28573      2349        2230      NET Serviços de Comunicação S
 3356      2559        2071      Level 3 Communications, Inc.
 4766      2923        2011      Korea Telecom
18566      2040        1858      MegaPath Corporation
 4538      1908        1837      China Education and Research 

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
30662   UNALLOCATED  8.2.129.0/24          3356       Level 3 Communicatio
53506   UNALLOCATED  8.17.102.0/23         3356       Level 3 Communicatio
46467   UNALLOCATED  8.19.192.0/24        46887       Lightower Fiber Netw
18985   UNALLOCATED  8.21.68.0/22          3356       Level 3 Communicatio
46473   UNALLOCATED  8.27.122.0/24        12180       Internap Network Ser
46473   UNALLOCATED  8.27.124.0/24        12180       Internap Network Ser
27205   UNALLOCATED  8.38.16.0/21          6461       Abovenet Communicati
15347   UNALLOCATED  8.224.147.0/24       12064       Cox Communications I
33628   UNALLOCATED  12.0.239.0/24         1239       Sprint
32805   UNALLOCATED  12.1.225.0/24         7018       AT&T Services, Inc.

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
5.100.241.0/24       23456     32bit Transition AS
23.226.112.0/20      62788     >>UNKNOWN<<
27.100.7.0/24        56096     >>UNKNOWN<<
31.217.248.0/21      44902     COVAGE NETWORKS SASU
41.73.1.0/24         37004     >>UNKNOWN<<
41.73.10.0/24        37004     >>UNKNOWN<<
41.73.11.0/24        37004     >>UNKNOWN<<
41.73.12.0/24        37004     >>UNKNOWN<<
41.73.13.0/24        37004     >>UNKNOWN<<
41.73.15.0/24        37004     >>UNKNOWN<<

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        /8:16       /9:12      /10:34      /11:94      /12:263     
/13:506     /14:1002    /15:1711    /16:12959   /17:7204    /18:12224   
/19:25351   /20:35848   /21:38596   /22:59112   /23:51410   /24:292432  
/25:1132    /26:1133    /27:709     /28:14      /29:12      /30:8       
/31:0       /32:13      

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

  ASN   No of nets  Total ann.   Description
39891     2432          2472      SaudiNet, Saudi Telecom Compa
22773     2223          3015      Cox Communications Inc.
18566     1996          2040      MegaPath Corporation
 6389     1654          2832      BellSouth.net Inc.
 6983     1402          1755      EarthLink, Inc.
30036     1367          1523      Mediacom Communications Corp
34984     1284          1964      TELLCOM ILETISIM HIZMETLERI A
 6147     1171          1623      Telefonica del Peru S.A.A.
10620     1133          3216      Telmex Colombia S.A.
11492     1106          1178      CABLE ONE, INC.

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

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

   1:1485      2:678       4:93        5:1758      6:23        8:1420   
  12:1824     13:10       14:1217     15:17       16:2        17:44     
  18:21       20:48       23:1210     24:1704     27:1890     31:1528   
  32:38       33:2        34:5        35:3        36:120      37:1895   
  38:1019     39:5        40:250      41:2989     42:282      43:1229   
  44:26       45:462      46:2138     47:39       49:819      50:801    
  52:12       54:73       55:5        56:8        57:37       58:1276   
  59:671      60:470      61:1745     62:1333     63:1917     64:4418   
  65:2249     66:4050     67:2063     68:1053     69:3254     70:956    
  71:448      72:1955     74:2654     75:324      76:406      77:1458   
  78:1185     79:797      80:1321     81:1348     82:816      83:688    
  84:713      85:1362     86:394      87:1066     88:510      89:1830   
  90:151      91:5990     92:828      93:2219     94:1990     95:2097   
  96:429      97:354      98:1055     99:49      100:68      101:830    
 103:7261    104:1597    105:61      106:246     107:940     108:621    
 109:2038    110:1081    111:1491    112:778     113:1101    114:821    
 115:1254    116:1329    117:1000    118:1798    119:1447    120:443    
 121:1045    122:2204    123:1793    124:1510    125:1587    128:532    
 129:379     130:390     131:1152    132:488     133:174     134:420    
 135:109     136:325     137:321     138:630     139:152     140:225    
 141:424     142:661     143:525     144:575     145:115     146:699    
 147:601     148:1131    149:435     150:573     151:610     152:491    
 153:242     154:471     155:840     156:407     157:463     158:321    
 159:995     160:380     161:647     162:1961    163:423     164:673    
 165:689     166:299     167:808     168:1289    169:164     170:1468   
 171:241     172:41      173:1531    174:703     175:681     176:1406   
 177:3747    178:2135    179:889     180:1940    181:1678    182:1746   
 183:620     184:741     185:3353    186:2707    187:1773    188:2019   
 189:1574    190:7696    191:937     192:8290    193:5583    194:4127   
 195:3652    196:1690    197:1054    198:5531    199:5530    200:6634   
 201:3063    202:9463    203:9100    204:4680    205:2835    206:3085   
 207:2980    208:3942    209:3958    210:3542    211:1860    212:2470   
 213:2294    214:862     215:71      216:5554    217:1806    218:685    
 219:456     220:1412    221:788     222:465     223:670    

End of report


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