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.

Thursday, November 14, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Fri 15 Nov, 2013

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

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

BGP routing table entries examined: 467714
Prefixes after maximum aggregation: 187985
Deaggregation factor: 2.49
Unique aggregates announced to Internet: 234179
Total ASes present in the Internet Routing Table: 45320
Prefixes per ASN: 10.32
Origin-only ASes present in the Internet Routing Table: 35390
Origin ASes announcing only one prefix: 16294
Transit ASes present in the Internet Routing Table: 5785
Transit-only ASes present in the Internet Routing Table: 151
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 37
Max AS path prepend of ASN ( 55644) 31
Prefixes from unregistered ASNs in the Routing Table: 2343
Unregistered ASNs in the Routing Table: 410
Number of 32-bit ASNs allocated by the RIRs: 5348
Number of 32-bit ASNs visible in the Routing Table: 4145
Prefixes from 32-bit ASNs in the Routing Table: 12945
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1073
Number of addresses announced to Internet: 2652409952
Equivalent to 158 /8s, 24 /16s and 144 /24s
Percentage of available address space announced: 71.6
Percentage of allocated address space announced: 71.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.2
Total number of prefixes smaller than registry allocations: 164237

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

Prefixes being announced by APNIC Region ASes: 107465
Total APNIC prefixes after maximum aggregation: 33265
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 109674
Unique aggregates announced from the APNIC address blocks: 47462
APNIC Region origin ASes present in the Internet Routing Table: 4848
APNIC Prefixes per ASN: 22.62
APNIC Region origin ASes announcing only one prefix: 1243
APNIC Region transit ASes present in the Internet Routing Table: 811
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 37
Number of APNIC region 32-bit ASNs visible in the Routing Table: 742
Number of APNIC addresses announced to Internet: 728393984
Equivalent to 43 /8s, 106 /16s and 105 /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: 162029
Total ARIN prefixes after maximum aggregation: 81263
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162605
Unique aggregates announced from the ARIN address blocks: 75970
ARIN Region origin ASes present in the Internet Routing Table: 15865
ARIN Prefixes per ASN: 10.25
ARIN Region origin ASes announcing only one prefix: 6003
ARIN Region transit ASes present in the Internet Routing Table: 1603
Average ARIN Region AS path length visible: 3.5
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 34
Number of ARIN addresses announced to Internet: 1072843008
Equivalent to 63 /8s, 242 /16s and 73 /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: 120419
Total RIPE prefixes after maximum aggregation: 60924
RIPE Deaggregation factor: 1.98
Prefixes being announced from the RIPE address blocks: 124328
Unique aggregates announced from the RIPE address blocks: 78829
RIPE Region origin ASes present in the Internet Routing Table: 17501
RIPE Prefixes per ASN: 7.10
RIPE Region origin ASes announcing only one prefix: 8300
RIPE Region transit ASes present in the Internet Routing Table: 2783
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2472
Number of RIPE addresses announced to Internet: 656647776
Equivalent to 39 /8s, 35 /16s and 166 /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: 52517
Total LACNIC prefixes after maximum aggregation: 9783
LACNIC Deaggregation factor: 5.37
Prefixes being announced from the LACNIC address blocks: 57640
Unique aggregates announced from the LACNIC address blocks: 26976
LACNIC Region origin ASes present in the Internet Routing Table: 2027
LACNIC Prefixes per ASN: 28.44
LACNIC Region origin ASes announcing only one prefix: 551
LACNIC Region transit ASes present in the Internet Routing Table: 384
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 891
Number of LACNIC addresses announced to Internet: 142756096
Equivalent to 8 /8s, 130 /16s and 73 /24s
Percentage of available LACNIC address space announced: 85.1

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: 11767
Total AfriNIC prefixes after maximum aggregation: 2599
AfriNIC Deaggregation factor: 4.53
Prefixes being announced from the AfriNIC address blocks: 12394
Unique aggregates announced from the AfriNIC address blocks: 4081
AfriNIC Region origin ASes present in the Internet Routing Table: 679
AfriNIC Prefixes per ASN: 18.25
AfriNIC Region origin ASes announcing only one prefix: 197
AfriNIC Region transit ASes present in the Internet Routing Table: 130
Average AfriNIC Region AS path length visible: 4.0
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: 48018944
Equivalent to 2 /8s, 220 /16s and 182 /24s
Percentage of available AfriNIC address space announced: 47.7

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 2712 903 89 PT TELEKOMUNIKASI INDONESIA
4766 2135 11550 641 Korea Telecom (KIX)
7545 2094 319 111 TPG Internet Pty Ltd
4755 1773 391 189 TATA Communications formerly
9829 1544 1245 45 BSNL National Internet Backbo
9583 1242 94 508 Sify Limited
9498 1213 309 74 BHARTI Airtel Ltd.
7552 1163 1080 13 Vietel Corporation
24560 1096 380 163 Bharti Airtel Ltd., Telemedia
4808 1084 2024 310 CNCGROUP IP network: China169

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

ARIN Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3052 3688 56 BellSouth.net Inc.
22773 2201 2939 139 Cox Communications, Inc.
18566 2058 379 178 MegaPath Corporation
1785 2039 685 131 PaeTec Communications, Inc.
20115 1682 1654 607 Charter Communications
4323 1644 1113 417 Time Warner Telecom
701 1505 11146 781 MCI Communications Services,
30036 1382 311 583 Mediacom Communications Corp
7018 1343 17795 881 AT&T WorldNet Services
6983 1294 771 579 ITC^Deltacom

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

RIPE Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8402 1900 544 17 OJSC "Vimpelcom"
3352 1885 2396 44 Ibernet, Internet Access Netw
34984 1363 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1123 414 851 Akamai Technologies European
31148 1005 45 19 FreeNet ISP
13188 896 99 48 TOV "Bank-Inform"
6849 849 356 30 JSC UKRTELECOM,
8551 785 370 41 Bezeq International
6830 778 2329 430 UPC Distribution Services
12479 679 798 55 Uni2 Autonomous System

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

LACNIC Region per AS prefix count summary
-----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
28573 3421 1793 87 NET Servicos de Comunicao S.A
10620 2652 430 226 Telmex Colombia S.A.
7303 1729 1151 232 Telecom Argentina Stet-France
18881 1621 908 20 Global Village Telecom
8151 1347 2851 409 UniNet S.A. de C.V.
11830 867 364 15 Instituto Costarricense de El
27947 819 94 91 Telconet S.A
6147 813 373 27 Telefonica Del Peru
6503 789 434 63 AVANTEL, S.A.
7738 780 1498 36 Telecomunicacoes da Bahia S.A

Complete listing at http://thyme.rand.apnic.net/us/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 887 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 418 956 9 TEDATA
24835 297 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
36992 229 501 29 Etisalat MISR
29571 224 17 12 Ci Telecom Autonomous system
15706 221 32 6 Sudatel Internet Exchange Aut
29975 192 668 21 Vodacom

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

Global Per AS prefix count summary
----------------------------------

ASN No of nets /20 equiv MaxAgg Description
28573 3421 1793 87 NET Servicos de Comunicao S.A
6389 3052 3688 56 BellSouth.net Inc.
17974 2712 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2652 430 226 Telmex Colombia S.A.
22773 2201 2939 139 Cox Communications, Inc.
4766 2135 11550 641 Korea Telecom (KIX)
7545 2094 319 111 TPG Internet Pty Ltd
18566 2058 379 178 MegaPath Corporation
1785 2039 685 131 PaeTec Communications, Inc.
8402 1900 544 17 OJSC "Vimpelcom"

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

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

ASN No of nets Net Savings Description
6389 3052 2996 BellSouth.net Inc.
17974 2712 2623 PT TELEKOMUNIKASI INDONESIA
10620 2652 2426 Telmex Colombia S.A.
22773 2201 2062 Cox Communications, Inc.
7545 2094 1983 TPG Internet Pty Ltd
1785 2039 1908 PaeTec Communications, Inc.
8402 1900 1883 OJSC "Vimpelcom"
18566 2058 1880 MegaPath Corporation
36998 1864 1859 Sudanese Mobile Telephone (ZA
3352 1885 1841 Ibernet, Internet Access Netw

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

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

Bad AS Designation Network Transit AS Description
62828 UNALLOCATED 8.21.130.0/24 4323 Time Warner Telecom
62850 UNALLOCATED 8.25.147.0/24 3356 Level 3 Communicatio
62734 UNALLOCATED 8.31.128.0/24 3356 Level 3 Communicatio
62773 UNALLOCATED 8.35.180.0/22 3356 Level 3 Communicatio
15132 UNALLOCATED 12.9.150.0/24 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 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 MCI Communications S

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

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

Network Origin AS Description
23.90.128.0/18 27418 OUTOFWALL INC.
23.90.192.0/18 3257 Tiscali Intl Network
23.91.0.0/19 40676 Psychz Networks
23.91.4.0/24 40676 Psychz Networks
23.91.14.0/24 40676 Psychz Networks
23.91.32.0/19 36315 Servpac Inc.
23.91.80.0/20 21560 Capital Technology Services G
23.91.96.0/20 37958 ChinaCache Networks ASN
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c

Complete listing at http://thyme.rand.apnic.net/us/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 /12:253
/13:469 /14:912 /15:1606 /16:12761 /17:6649 /18:11085
/19:22816 /20:32658 /21:35532 /22:49613 /23:44065 /24:248705
/25:46 /26:38 /27:26 /28:42 /29:40 /30:211
/31:12 /32:25

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

ASN No of nets Total ann. Description
18566 2012 2058 MegaPath Corporation
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1705 3052 BellSouth.net Inc.
8402 1571 1900 OJSC "Vimpelcom"
3352 1477 1885 Ibernet, Internet Access Netw
22773 1460 2201 Cox Communications, Inc.
30036 1228 1382 Mediacom Communications Corp
11492 1191 1229 Cable One
1785 1086 2039 PaeTec Communications, Inc.
6983 1034 1294 ITC^Deltacom

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

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

1:897 2:842 3:3 4:17 5:1024 6:21
8:618 12:1887 13:3 14:874 15:11 16:3
17:17 18:19 20:21 23:555 24:1744 27:1640
31:1436 32:43 33:2 34:5 36:86 37:1916
38:914 39:5 40:182 41:3276 42:274 44:13
46:2015 47:10 49:690 50:830 52:12 54:43
55:7 56:4 57:26 58:1088 59:568 60:375
61:1456 62:1237 63:1978 64:4330 65:2340 66:4143
67:2114 68:1107 69:3300 70:871 71:489 72:2041
74:2556 75:326 76:296 77:1162 78:1041 79:678
80:1636 81:1147 82:638 83:675 84:584 85:1256
86:382 87:1027 88:623 89:1561 90:150 91:5647
92:625 93:1608 94:2038 95:1633 96:509 97:350
98:1033 99:41 100:31 101:388 103:3573 105:527
106:141 107:215 108:515 109:1944 110:970 111:1111
112:587 113:807 114:730 115:1001 116:992 117:802
118:1177 119:1255 120:327 121:732 122:1785 123:1241
124:1362 125:1430 128:636 129:214 130:315 131:654
132:359 133:158 134:547 135:72 136:282 137:243
138:351 139:171 140:170 141:319 142:531 143:427
144:497 145:90 146:518 147:394 148:714 149:367
150:132 151:652 152:411 153:206 154:53 155:498
156:292 157:369 158:280 159:694 160:362 161:451
162:854 163:202 164:631 165:581 166:260 167:634
168:1038 169:121 170:1117 171:185 172:27 173:1593
174:688 175:505 176:1294 177:2471 178:1978 179:294
180:1584 181:871 182:1372 183:462 184:663 185:1016
186:2608 187:1468 188:1860 189:1258 190:7265 192:6993
193:5418 194:4042 195:3369 196:1339 197:1034 198:4690
199:5447 200:6052 201:2517 202:8778 203:8824 204:4466
205:2634 206:2747 207:2770 208:4004 209:3641 210:2904
211:1558 212:2169 213:1976 214:899 215:91 216:5419
217:1694 218:618 219:316 220:1273 221:578 222:327
223:502

End of report
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