The Border Gateway Protocol (BGP) is the protocol backing the core routing decisions on the Internet. It maintains a table of IP networks or 'prefixes' which designate network reachability among autonomous systems (AS). It is described as a path vector protocol. BGP does not use traditional Interior Gateway Protocol (IGP) metrics, but makes routing decisions based on path, network policies and/or rulesets. For this reason, it is more appropriately termed a reachability protocol rather than routing protocol.

Monday, October 7, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Tue 08 Oct, 2013

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

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

BGP routing table entries examined: 469100
Prefixes after maximum aggregation: 189081
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 232549
Total ASes present in the Internet Routing Table: 45132
Prefixes per ASN: 10.39
Origin-only ASes present in the Internet Routing Table: 35239
Origin ASes announcing only one prefix: 16258
Transit ASes present in the Internet Routing Table: 5907
Transit-only ASes present in the Internet Routing Table: 165
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 30
Max AS path prepend of ASN ( 55644) 25
Prefixes from unregistered ASNs in the Routing Table: 398
Unregistered ASNs in the Routing Table: 224
Number of 32-bit ASNs allocated by the RIRs: 5155
Number of 32-bit ASNs visible in the Routing Table: 3986
Prefixes from 32-bit ASNs in the Routing Table: 12306
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 686
Number of addresses announced to Internet: 2647985652
Equivalent to 157 /8s, 213 /16s and 13 /24s
Percentage of available address space announced: 71.5
Percentage of allocated address space announced: 71.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.0
Total number of prefixes smaller than registry allocations: 164157

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

Prefixes being announced by APNIC Region ASes: 111194
Total APNIC prefixes after maximum aggregation: 33817
APNIC Deaggregation factor: 3.29
Prefixes being announced from the APNIC address blocks: 113234
Unique aggregates announced from the APNIC address blocks: 46815
APNIC Region origin ASes present in the Internet Routing Table: 4873
APNIC Prefixes per ASN: 23.24
APNIC Region origin ASes announcing only one prefix: 1221
APNIC Region transit ASes present in the Internet Routing Table: 822
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 28
Number of APNIC region 32-bit ASNs visible in the Routing Table: 694
Number of APNIC addresses announced to Internet: 728507392
Equivalent to 43 /8s, 108 /16s and 36 /24s
Percentage of available APNIC address space announced: 85.1

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-63999, 131072-133631
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: 162873
Total ARIN prefixes after maximum aggregation: 81562
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 163371
Unique aggregates announced from the ARIN address blocks: 75919
ARIN Region origin ASes present in the Internet Routing Table: 15901
ARIN Prefixes per ASN: 10.27
ARIN Region origin ASes announcing only one prefix: 6018
ARIN Region transit ASes present in the Internet Routing Table: 1662
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 22
Number of ARIN addresses announced to Internet: 1073128448
Equivalent to 63 /8s, 246 /16s and 164 /24s
Percentage of available ARIN address space announced: 56.8

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: 118954
Total RIPE prefixes after maximum aggregation: 61249
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122537
Unique aggregates announced from the RIPE address blocks: 78930
RIPE Region origin ASes present in the Internet Routing Table: 17455
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8262
RIPE Region transit ASes present in the Internet Routing Table: 2813
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2411
Number of RIPE addresses announced to Internet: 656719076
Equivalent to 39 /8s, 36 /16s and 188 /24s
Percentage of available RIPE address space announced: 95.5

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, 196608-200191
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: 52046
Total LACNIC prefixes after maximum aggregation: 9825
LACNIC Deaggregation factor: 5.30
Prefixes being announced from the LACNIC address blocks: 57075
Unique aggregates announced from the LACNIC address blocks: 26295
LACNIC Region origin ASes present in the Internet Routing Table: 2034
LACNIC Prefixes per ASN: 28.06
LACNIC Region origin ASes announcing only one prefix: 567
LACNIC Region transit ASes present in the Internet Routing Table: 384
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 853
Number of LACNIC addresses announced to Internet: 140056080
Equivalent to 8 /8s, 89 /16s and 22 /24s
Percentage of available LACNIC address space announced: 83.5

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 262144-263679 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: 11573
Total AfriNIC prefixes after maximum aggregation: 2537
AfriNIC Deaggregation factor: 4.56
Prefixes being announced from the AfriNIC address blocks: 12197
Unique aggregates announced from the AfriNIC address blocks: 4004
AfriNIC Region origin ASes present in the Internet Routing Table: 652
AfriNIC Prefixes per ASN: 18.71
AfriNIC Region origin ASes announcing only one prefix: 190
AfriNIC Region transit ASes present in the Internet Routing Table: 136
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 6
Number of AfriNIC addresses announced to Internet: 47729664
Equivalent to 2 /8s, 216 /16s and 76 /24s
Percentage of available AfriNIC address space announced: 47.4

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 2944 11563 946 Korea Telecom (KIX)
17974 2719 903 90 PT TELEKOMUNIKASI INDONESIA
7545 2084 321 112 TPG Internet Pty Ltd
4755 1765 391 187 TATA Communications formerly
9829 1554 1241 43 BSNL National Internet Backbo
9583 1237 93 507 Sify Limited
9498 1197 309 72 BHARTI Airtel Ltd.
4808 1191 2131 347 CNCGROUP IP network: China169
7552 1107 1080 13 Vietel Corporation
24560 1091 380 164 Bharti Airtel Ltd., Telemedia

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 3060 3689 59 BellSouth.net Inc.
18566 2066 382 184 Covad Communications
22773 2055 2943 140 Cox Communications, Inc.
1785 2019 679 125 PaeTec Communications, Inc.
20115 1682 1651 619 Charter Communications
4323 1625 1104 419 Time Warner Telecom
701 1516 11148 789 UUNET Technologies, Inc.
30036 1338 301 638 Mediacom Communications Corp
7018 1331 17514 858 AT&T WorldNet Services
6983 1293 771 579 ITC^Deltacom

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 1874 544 17 OJSC "Vimpelcom"
34984 1364 244 221 TELLCOM ILETISIM HIZMETLERI A
20940 1050 388 808 Akamai Technologies European
31148 992 44 19 FreeNet ISP
13188 850 99 62 TOV "Bank-Inform"
6830 824 2365 424 UPC Distribution Services
8551 749 370 41 Bezeq International
12479 680 799 49 Uni2 Autonomous System
35228 528 246 16 Avatar Broadband Limited
3320 514 8418 406 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
28573 3362 1734 88 NET Servicos de Comunicao S.A
10620 2598 423 248 TVCABLE BOGOTA
7303 1724 1135 233 Telecom Argentina Stet-France
18881 1463 844 20 Global Village Telecom
8151 1342 2807 414 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
6503 859 434 62 AVANTEL, S.A.
27947 839 93 91 Telconet S.A
6147 799 373 27 Telefonica Del Peru
7738 780 1498 36 Telecomunicacoes da Bahia S.A

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
36998 1864 112 5 Sudanese Mobile Telephone (ZA
24863 882 306 30 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 421 956 9 TEDATA
24835 292 80 8 RAYA Telecom - Egypt
3741 258 921 216 The Internet Solution
29571 223 17 12 Ci Telecom Autonomous system
36992 222 501 28 Etisalat MISR
15706 221 32 6 Sudatel Internet Exchange Aut
29975 192 668 21 Vodacom

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
28573 3362 1734 88 NET Servicos de Comunicao S.A
6389 3060 3689 59 BellSouth.net Inc.
4766 2944 11563 946 Korea Telecom (KIX)
17974 2719 903 90 PT TELEKOMUNIKASI INDONESIA
10620 2598 423 248 TVCABLE BOGOTA
7545 2084 321 112 TPG Internet Pty Ltd
18566 2066 382 184 Covad Communications
22773 2055 2943 140 Cox Communications, Inc.
1785 2019 679 125 PaeTec Communications, Inc.
8402 1874 544 17 OJSC "Vimpelcom"

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 3060 3001 BellSouth.net Inc.
17974 2719 2629 PT TELEKOMUNIKASI INDONESIA
10620 2598 2350 TVCABLE BOGOTA
4766 2944 1998 Korea Telecom (KIX)
7545 2084 1972 TPG Internet Pty Ltd
22773 2055 1915 Cox Communications, Inc.
1785 2019 1894 PaeTec Communications, Inc.
18566 2066 1882 Covad Communications
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1874 1857 OJSC "Vimpelcom"

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
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T WorldNet Servic
62719 UNALLOCATED 12.27.130.0/24 4323 Time Warner Telecom
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 12.45.103.0/24 209 Qwest
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
14764 UNALLOCATED 12.108.237.0/24 7018 AT&T WorldNet Servic
33649 UNALLOCATED 12.111.112.0/24 19029 New Edge Networks

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix Origin AS Description
100.100.0.0/24 4847 China Networks Inter-Exchange

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

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

Network Origin AS Description
23.90.128.0/18 27418 OUTOFWALL INC.
23.90.192.0/18 36086 Broad Communications Technolo
23.91.0.0/19 40676 Psychz Networks
23.91.32.0/19 36315 Servpac Inc.
23.91.96.0/20 40676 Psychz Networks
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/22 36493 3757277 Canada Inc. (oa 295.c
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c
23.91.164.0/22 36493 3757277 Canada Inc. (oa 295.c
23.91.168.0/22 36493 3757277 Canada Inc. (oa 295.c

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 /9:11 /10:31 /11:92 /12:251
/13:481 /14:912 /15:1626 /16:12824 /17:6700 /18:11221
/19:22969 /20:32588 /21:35337 /22:49774 /23:43067 /24:248678
/25:902 /26:992 /27:472 /28:49 /29:78 /30:17
/31:0 /32:12

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

ASN No of nets Total ann. Description
18566 2017 2066 Covad Communications
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1709 3060 BellSouth.net Inc.
8402 1594 1874 OJSC "Vimpelcom"
22773 1327 2055 Cox Communications, Inc.
30036 1195 1338 Mediacom Communications Corp
11492 1194 1235 Cable One
1785 1085 2019 PaeTec Communications, Inc.
6983 1033 1293 ITC^Deltacom
22561 962 1237 Digital Teleport, Inc

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

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

1:831 2:859 3:3 4:17 5:995 6:18
8:616 12:1895 13:3 14:873 15:11 16:3
17:14 18:19 20:21 23:453 24:1719 27:1599
31:1477 32:43 33:2 34:5 36:81 37:1827
38:907 39:2 40:179 41:3230 42:249 44:14
46:2031 47:6 49:678 50:842 52:12 54:39
55:2 56:2 57:26 58:1162 59:611 60:355
61:1426 62:1184 63:1978 64:4543 65:2353 66:4179
67:2108 68:1089 69:3298 70:858 71:496 72:1991
74:2561 75:326 76:306 77:1160 78:1071 79:648
80:1332 81:1021 82:624 83:587 84:595 85:1259
86:453 87:1018 88:555 89:1728 90:157 91:5636
92:611 93:1626 94:1989 95:1664 96:511 97:344
98:1032 99:43 100:31 101:614 103:3363 105:520
106:143 107:212 108:508 109:1876 110:970 111:1127
112:582 113:790 114:732 115:1021 116:982 117:829
118:1168 119:1296 120:370 121:734 122:1885 123:1220
124:1372 125:1425 128:618 129:324 130:325 131:671
132:349 133:162 134:548 135:67 136:275 137:265
138:348 139:181 140:196 141:324 142:548 143:414
144:498 145:104 146:517 147:403 148:699 149:351
150:157 151:615 152:412 153:200 154:47 155:487
156:282 157:422 158:284 159:763 160:348 161:453
162:744 163:229 164:633 165:575 166:258 167:626
168:1044 169:127 170:1081 171:202 172:25 173:1615
174:648 175:503 176:1243 177:2356 178:1916 179:160
180:1572 181:750 182:1333 183:475 184:657 185:909
186:2590 187:1475 188:1880 189:1349 190:7219 192:6995
193:5626 194:4065 195:3334 196:1324 197:992 198:4693
199:5480 200:6094 201:2525 202:8987 203:8919 204:4502
205:2627 206:2848 207:2896 208:4004 209:3621 210:2948
211:1575 212:2228 213:2001 214:899 215:99 216:5400
217:1673 218:621 219:315 220:1279 221:566 222:326
223:504

End of report
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