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 21, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Fri 22 Nov, 2013

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

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

BGP routing table entries examined: 465991
Prefixes after maximum aggregation: 188128
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 234128
Total ASes present in the Internet Routing Table: 45384
Prefixes per ASN: 10.27
Origin-only ASes present in the Internet Routing Table: 35416
Origin ASes announcing only one prefix: 16294
Transit ASes present in the Internet Routing Table: 5794
Transit-only ASes present in the Internet Routing Table: 153
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: 869
Unregistered ASNs in the Routing Table: 245
Number of 32-bit ASNs allocated by the RIRs: 5378
Number of 32-bit ASNs visible in the Routing Table: 4174
Prefixes from 32-bit ASNs in the Routing Table: 13085
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1139
Number of addresses announced to Internet: 2651586912
Equivalent to 158 /8s, 12 /16s and 1 /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: 95.3
Total number of prefixes smaller than registry allocations: 162384

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

Prefixes being announced by APNIC Region ASes: 107651
Total APNIC prefixes after maximum aggregation: 33305
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 109895
Unique aggregates announced from the APNIC address blocks: 47494
APNIC Region origin ASes present in the Internet Routing Table: 4845
APNIC Prefixes per ASN: 22.68
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 813
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: 753
Number of APNIC addresses announced to Internet: 726914560
Equivalent to 43 /8s, 83 /16s and 214 /24s
Percentage of available APNIC address space announced: 85.0

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: 162049
Total ARIN prefixes after maximum aggregation: 81267
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162565
Unique aggregates announced from the ARIN address blocks: 75880
ARIN Region origin ASes present in the Internet Routing Table: 15878
ARIN Prefixes per ASN: 10.24
ARIN Region origin ASes announcing only one prefix: 6003
ARIN Region transit ASes present in the Internet Routing Table: 1605
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: 38
Number of ARIN addresses announced to Internet: 1073050624
Equivalent to 63 /8s, 245 /16s and 116 /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: 118818
Total RIPE prefixes after maximum aggregation: 60964
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 122825
Unique aggregates announced from the RIPE address blocks: 78729
RIPE Region origin ASes present in the Internet Routing Table: 17505
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8289
RIPE Region transit ASes present in the Internet Routing Table: 2784
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2481
Number of RIPE addresses announced to Internet: 656143200
Equivalent to 39 /8s, 27 /16s and 243 /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: 52654
Total LACNIC prefixes after maximum aggregation: 9829
LACNIC Deaggregation factor: 5.36
Prefixes being announced from the LACNIC address blocks: 57796
Unique aggregates announced from the LACNIC address blocks: 27042
LACNIC Region origin ASes present in the Internet Routing Table: 2036
LACNIC Prefixes per ASN: 28.39
LACNIC Region origin ASes announcing only one prefix: 560
LACNIC Region transit ASes present in the Internet Routing Table: 380
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 896
Number of LACNIC addresses announced to Internet: 143534080
Equivalent to 8 /8s, 142 /16s and 40 /24s
Percentage of available LACNIC address space announced: 85.6

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: 11149
Total AfriNIC prefixes after maximum aggregation: 2602
AfriNIC Deaggregation factor: 4.28
Prefixes being announced from the AfriNIC address blocks: 11771
Unique aggregates announced from the AfriNIC address blocks: 4066
AfriNIC Region origin ASes present in the Internet Routing Table: 684
AfriNIC Prefixes per ASN: 17.21
AfriNIC Region origin ASes announcing only one prefix: 206
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: 48032256
Equivalent to 2 /8s, 220 /16s and 234 /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 2713 902 88 PT TELEKOMUNIKASI INDONESIA
4766 2139 11550 641 Korea Telecom (KIX)
7545 2093 319 109 TPG Internet Pty Ltd
4755 1776 391 189 TATA Communications formerly
9829 1542 1245 45 BSNL National Internet Backbo
9583 1246 95 509 Sify Limited
9498 1210 309 73 BHARTI Airtel Ltd.
7552 1163 1080 13 Vietel Corporation
24560 1095 380 166 Bharti Airtel Ltd., Telemedia
4808 1080 2020 309 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 3043 3688 53 BellSouth.net Inc.
22773 2209 2941 142 Cox Communications, Inc.
1785 2058 686 146 PaeTec Communications, Inc.
18566 2056 379 178 MegaPath Corporation
20115 1681 1655 598 Charter Communications
4323 1649 1114 419 Time Warner Telecom
701 1506 11162 781 MCI Communications Services,
30036 1387 313 582 Mediacom Communications Corp
7018 1344 17795 881 AT&T WorldNet Services
6983 1297 774 582 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 1879 544 16 OJSC "Vimpelcom"
34984 1366 244 222 TELLCOM ILETISIM HIZMETLERI A
20940 1139 424 865 Akamai Technologies European
31148 1009 45 19 FreeNet ISP
13188 887 96 55 TOV "Bank-Inform"
6849 869 363 39 JSC UKRTELECOM,
8551 786 370 41 Bezeq International
6830 777 2328 429 UPC Distribution Services
12479 679 797 57 Uni2 Autonomous System
35228 546 246 16 Avatar Broadband Limited

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 3388 1794 88 NET Servicos de Comunicao S.A
10620 2666 432 219 Telmex Colombia S.A.
7303 1729 1151 232 Telecom Argentina Stet-France
18881 1649 908 20 Global Village Telecom
8151 1343 2847 413 UniNet S.A. de C.V.
11830 867 364 15 Instituto Costarricense de El
27947 820 94 91 Telconet S.A
6147 789 373 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 1284 112 5 Sudanese Mobile Telephone (ZA
24863 877 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 410 956 9 TEDATA
24835 297 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
29571 224 17 12 Ci Telecom Autonomous system
15706 221 32 6 Sudatel Internet Exchange Aut
36992 219 501 29 Etisalat MISR
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 3388 1794 88 NET Servicos de Comunicao S.A
6389 3043 3688 53 BellSouth.net Inc.
17974 2713 902 88 PT TELEKOMUNIKASI INDONESIA
10620 2666 432 219 Telmex Colombia S.A.
22773 2209 2941 142 Cox Communications, Inc.
4766 2139 11550 641 Korea Telecom (KIX)
7545 2093 319 109 TPG Internet Pty Ltd
1785 2058 686 146 PaeTec Communications, Inc.
18566 2056 379 178 MegaPath Corporation
8402 1879 544 16 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 3043 2990 BellSouth.net Inc.
17974 2713 2625 PT TELEKOMUNIKASI INDONESIA
10620 2666 2447 Telmex Colombia S.A.
22773 2209 2067 Cox Communications, Inc.
7545 2093 1984 TPG Internet Pty Ltd
1785 2058 1912 PaeTec Communications, Inc.
18566 2056 1878 MegaPath Corporation
8402 1879 1863 OJSC "Vimpelcom"
18881 1649 1629 Global Village Telecom
4755 1776 1587 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
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
62861 UNALLOCATED 12.37.197.0/24 7018 AT&T WorldNet Servic
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

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.
23.91.0.0/19 40676 Psychz Networks
23.91.21.0/24 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
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 /12:253
/13:469 /14:913 /15:1609 /16:12758 /17:6683 /18:11067
/19:22811 /20:32700 /21:35399 /22:49420 /23:43455 /24:247859
/25:45 /26:38 /27:26 /28:42 /29:41 /30:215
/31:13 /32:25

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

ASN No of nets Total ann. Description
18566 2010 2056 MegaPath Corporation
6389 1701 3043 BellSouth.net Inc.
8402 1564 1879 OJSC "Vimpelcom"
22773 1464 2209 Cox Communications, Inc.
36998 1277 1284 Sudanese Mobile Telephone (ZA
30036 1231 1387 Mediacom Communications Corp
11492 1195 1233 Cable One
1785 1095 2058 PaeTec Communications, Inc.
6983 1036 1297 ITC^Deltacom
22561 964 1241 Digital Teleport, Inc

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

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

1:898 2:827 3:3 4:17 5:1026 6:21
8:622 12:1880 13:3 14:867 15:11 16:3
17:18 18:19 20:21 23:575 24:1756 27:1624
31:1512 32:43 33:2 34:5 36:86 37:1932
38:910 39:5 40:182 41:2751 42:287 44:13
46:2022 47:10 49:692 50:841 52:12 54:44
55:6 56:4 57:26 58:1091 59:570 60:366
61:1461 62:1250 63:1985 64:4318 65:2344 66:4158
67:2112 68:1093 69:3295 70:886 71:488 72:2010
74:2568 75:325 76:292 77:1155 78:1050 79:662
80:1273 81:1058 82:648 83:675 84:588 85:1257
86:375 87:1025 88:557 89:1561 90:152 91:5684
92:612 93:1613 94:2069 95:1558 96:512 97:348
98:1036 99:41 100:31 101:403 103:3642 105:524
106:141 107:216 108:516 109:1974 110:972 111:1111
112:588 113:810 114:745 115:1017 116:984 117:814
118:1178 119:1250 120:331 121:735 122:1767 123:1238
124:1369 125:1430 128:625 129:215 130:336 131:657
132:354 133:158 134:419 135:72 136:283 137:244
138:351 139:292 140:173 141:318 142:535 143:407
144:491 145:90 146:521 147:396 148:729 149:361
150:150 151:649 152:412 153:205 154:53 155:498
156:293 157:370 158:281 159:694 160:360 161:450
162:869 163:206 164:617 165:584 166:262 167:634
168:1038 169:121 170:1119 171:185 172:27 173:1587
174:694 175:508 176:1311 177:2473 178:1867 179:293
180:1588 181:862 182:1375 183:451 184:630 185:1056
186:2627 187:1479 188:1863 189:1262 190:7279 192:7002
193:5422 194:4024 195:3359 196:1326 197:1040 198:4694
199:5456 200:6035 201:2524 202:8805 203:8821 204:4481
205:2621 206:2746 207:2773 208:3983 209:3637 210:2928
211:1566 212:2147 213:1978 214:900 215:91 216:5397
217:1694 218:616 219:316 220:1273 221:585 222:326
223:501

End of report
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