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.

Wednesday, October 30, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Thu 31 Oct, 2013

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

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

BGP routing table entries examined: 463187
Prefixes after maximum aggregation: 187632
Deaggregation factor: 2.47
Unique aggregates announced to Internet: 233039
Total ASes present in the Internet Routing Table: 45210
Prefixes per ASN: 10.25
Origin-only ASes present in the Internet Routing Table: 35329
Origin ASes announcing only one prefix: 16270
Transit ASes present in the Internet Routing Table: 5799
Transit-only ASes present in the Internet Routing Table: 155
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: 690
Unregistered ASNs in the Routing Table: 167
Number of 32-bit ASNs allocated by the RIRs: 5271
Number of 32-bit ASNs visible in the Routing Table: 4082
Prefixes from 32-bit ASNs in the Routing Table: 12566
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 875
Number of addresses announced to Internet: 2650767840
Equivalent to 157 /8s, 255 /16s and 129 /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: 95.1
Total number of prefixes smaller than registry allocations: 161832

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

Prefixes being announced by APNIC Region ASes: 107009
Total APNIC prefixes after maximum aggregation: 33089
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 109097
Unique aggregates announced from the APNIC address blocks: 46957
APNIC Region origin ASes present in the Internet Routing Table: 4851
APNIC Prefixes per ASN: 22.49
APNIC Region origin ASes announcing only one prefix: 1229
APNIC Region transit ASes present in the Internet Routing Table: 810
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: 720
Number of APNIC addresses announced to Internet: 727927808
Equivalent to 43 /8s, 99 /16s and 76 /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: 161616
Total ARIN prefixes after maximum aggregation: 81065
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162356
Unique aggregates announced from the ARIN address blocks: 75764
ARIN Region origin ASes present in the Internet Routing Table: 15853
ARIN Prefixes per ASN: 10.24
ARIN Region origin ASes announcing only one prefix: 6001
ARIN Region transit ASes present in the Internet Routing Table: 1611
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: 32
Number of ARIN addresses announced to Internet: 1072769792
Equivalent to 63 /8s, 241 /16s and 43 /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: 117929
Total RIPE prefixes after maximum aggregation: 61014
RIPE Deaggregation factor: 1.93
Prefixes being announced from the RIPE address blocks: 121738
Unique aggregates announced from the RIPE address blocks: 78794
RIPE Region origin ASes present in the Internet Routing Table: 17491
RIPE Prefixes per ASN: 6.96
RIPE Region origin ASes announcing only one prefix: 8296
RIPE Region transit ASes present in the Internet Routing Table: 2792
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2445
Number of RIPE addresses announced to Internet: 656514528
Equivalent to 39 /8s, 33 /16s and 157 /24s
Percentage of available RIPE address space announced: 95.4

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: 51947
Total LACNIC prefixes after maximum aggregation: 9772
LACNIC Deaggregation factor: 5.32
Prefixes being announced from the LACNIC address blocks: 56896
Unique aggregates announced from the LACNIC address blocks: 26745
LACNIC Region origin ASes present in the Internet Routing Table: 2027
LACNIC Prefixes per ASN: 28.07
LACNIC Region origin ASes announcing only one prefix: 553
LACNIC Region transit ASes present in the Internet Routing Table: 377
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 35
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 879
Number of LACNIC addresses announced to Internet: 142156544
Equivalent to 8 /8s, 121 /16s and 35 /24s
Percentage of available LACNIC address space announced: 84.7

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: 2562
AfriNIC Deaggregation factor: 4.52
Prefixes being announced from the AfriNIC address blocks: 12225
Unique aggregates announced from the AfriNIC address blocks: 4042
AfriNIC Region origin ASes present in the Internet Routing Table: 661
AfriNIC Prefixes per ASN: 18.49
AfriNIC Region origin ASes announcing only one prefix: 191
AfriNIC Region transit ASes present in the Internet Routing Table: 131
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: 48029952
Equivalent to 2 /8s, 220 /16s and 225 /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 2715 903 89 PT TELEKOMUNIKASI INDONESIA
4766 2139 11550 641 Korea Telecom (KIX)
7545 2090 319 111 TPG Internet Pty Ltd
4755 1769 391 188 TATA Communications formerly
9829 1550 1240 47 BSNL National Internet Backbo
9498 1212 310 76 BHARTI Airtel Ltd.
9583 1187 90 513 Sify Limited
7552 1156 1080 13 Vietel Corporation
4808 1105 2030 315 CNCGROUP IP network: China169
24560 1092 380 165 Bharti Airtel Ltd., Telemedia

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 3043 3688 56 BellSouth.net Inc.
22773 2190 2939 139 Cox Communications, Inc.
18566 2060 379 180 MegaPath Corporation
1785 2036 684 131 PaeTec Communications, Inc.
20115 1681 1654 607 Charter Communications
4323 1627 1117 419 Time Warner Telecom
701 1504 11144 779 MCI Communications Services,
30036 1393 314 577 Mediacom Communications Corp
7018 1348 17797 879 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 1764 544 17 OJSC "Vimpelcom"
34984 1361 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1088 396 834 Akamai Technologies European
31148 1004 44 21 FreeNet ISP
13188 889 99 49 TOV "Bank-Inform"
6830 774 2328 427 UPC Distribution Services
8551 758 370 41 Bezeq International
12479 679 798 55 Uni2 Autonomous System
35228 540 246 16 Avatar Broadband Limited
35819 534 584 77 Bayanat Al-Oula For Network S

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 3474 1782 85 NET Servicos de Comunicao S.A
10620 2636 427 234 TVCABLE BOGOTA
7303 1724 1144 233 Telecom Argentina Stet-France
18881 1524 844 20 Global Village Telecom
8151 1334 2838 408 UniNet S.A. de C.V.
11830 866 364 15 Instituto Costarricense de El
27947 819 94 93 Telconet S.A
6147 793 373 27 Telefonica Del Peru
6503 785 434 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 1854 112 5 Sudanese Mobile Telephone (ZA
24863 885 338 30 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 410 956 9 TEDATA
24835 294 144 9 RAYA Telecom - Egypt
3741 258 921 216 The Internet Solution
36992 227 501 29 Etisalat MISR
29571 224 17 12 Ci Telecom Autonomous system
15706 219 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 3474 1782 85 NET Servicos de Comunicao S.A
6389 3043 3688 56 BellSouth.net Inc.
17974 2715 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2636 427 234 TVCABLE BOGOTA
22773 2190 2939 139 Cox Communications, Inc.
4766 2139 11550 641 Korea Telecom (KIX)
7545 2090 319 111 TPG Internet Pty Ltd
18566 2060 379 180 MegaPath Corporation
1785 2036 684 131 PaeTec Communications, Inc.
36998 1854 112 5 Sudanese Mobile Telephone (ZA

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 3043 2987 BellSouth.net Inc.
17974 2715 2626 PT TELEKOMUNIKASI INDONESIA
10620 2636 2402 TVCABLE BOGOTA
22773 2190 2051 Cox Communications, Inc.
7545 2090 1979 TPG Internet Pty Ltd
1785 2036 1905 PaeTec Communications, Inc.
18566 2060 1880 MegaPath Corporation
36998 1854 1849 Sudanese Mobile Telephone (ZA
8402 1764 1747 OJSC "Vimpelcom"
4755 1769 1581 TATA Communications formerly

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

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

Bad AS Designation Network Transit AS Description
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
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
14764 UNALLOCATED 12.108.237.0/24 7018 AT&T WorldNet Servic

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 36086 Broad Communications Technolo
23.91.0.0/19 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 40676 Psychz Networks
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c
23.91.160.0/22 36493 3757277 Canada Inc. (oa 295.c
23.91.164.0/22 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 /12:254
/13:469 /14:908 /15:1609 /16:12772 /17:6627 /18:11041
/19:22687 /20:32411 /21:35106 /22:49432 /23:42889 /24:246487
/25:45 /26:37 /27:25 /28:39 /29:28 /30:142
/31:10 /32:19

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

ASN No of nets Total ann. Description
18566 2013 2060 MegaPath Corporation
36998 1819 1854 Sudanese Mobile Telephone (ZA
6389 1705 3043 BellSouth.net Inc.
8402 1470 1764 OJSC "Vimpelcom"
22773 1457 2190 Cox Communications, Inc.
30036 1240 1393 Mediacom Communications Corp
11492 1200 1241 Cable One
1785 1086 2036 PaeTec Communications, Inc.
6983 1034 1294 ITC^Deltacom
22561 966 1242 Digital Teleport, Inc

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

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

1:866 2:812 3:3 4:17 5:1003 6:21
8:612 12:1891 13:3 14:865 15:11 16:3
17:17 18:19 20:21 23:498 24:1740 27:1602
31:1483 32:40 33:2 34:5 36:80 37:1865
38:915 39:4 40:181 41:3183 42:246 44:13
46:2014 47:9 49:681 50:824 52:12 54:42
55:3 56:2 57:26 58:1077 59:569 60:371
61:1455 62:1207 63:1980 64:4541 65:2335 66:4135
67:2094 68:1104 69:3267 70:870 71:479 72:2007
74:2550 75:328 76:295 77:1163 78:1052 79:647
80:1277 81:1018 82:662 83:632 84:580 85:1253
86:423 87:1008 88:564 89:1598 90:155 91:5655
92:615 93:1590 94:2003 95:1594 96:506 97:344
98:1040 99:39 100:30 101:364 103:3465 105:524
106:142 107:212 108:513 109:1914 110:946 111:1099
112:581 113:807 114:722 115:1005 116:989 117:815
118:1164 119:1253 120:359 121:727 122:1784 123:1230
124:1307 125:1433 128:602 129:214 130:313 131:658
132:341 133:158 134:545 135:67 136:278 137:264
138:349 139:171 140:166 141:321 142:529 143:419
144:499 145:87 146:515 147:384 148:698 149:360
150:155 151:586 152:411 153:204 154:51 155:490
156:282 157:374 158:282 159:683 160:359 161:449
162:811 163:206 164:631 165:566 166:257 167:626
168:1039 169:124 170:1127 171:181 172:25 173:1611
174:670 175:499 176:1256 177:2351 178:1932 179:195
180:1575 181:786 182:1330 183:454 184:662 185:965
186:2661 187:1466 188:1837 189:1266 190:7194 192:7033
193:5400 194:4028 195:3321 196:1317 197:1014 198:4680
199:5457 200:6032 201:2503 202:8758 203:8833 204:4458
205:2609 206:2753 207:2791 208:4010 209:3631 210:2901
211:1559 212:2120 213:1965 214:894 215:92 216:5376
217:1690 218:617 219:307 220:1276 221:567 222:326
223:501

End of report
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