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.

Tuesday, November 5, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Wed 06 Nov, 2013

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

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

BGP routing table entries examined: 464105
Prefixes after maximum aggregation: 187614
Deaggregation factor: 2.47
Unique aggregates announced to Internet: 233210
Total ASes present in the Internet Routing Table: 45258
Prefixes per ASN: 10.25
Origin-only ASes present in the Internet Routing Table: 35342
Origin ASes announcing only one prefix: 16273
Transit ASes present in the Internet Routing Table: 5808
Transit-only ASes present in the Internet Routing Table: 156
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: 698
Unregistered ASNs in the Routing Table: 172
Number of 32-bit ASNs allocated by the RIRs: 5304
Number of 32-bit ASNs visible in the Routing Table: 4108
Prefixes from 32-bit ASNs in the Routing Table: 12765
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 952
Number of addresses announced to Internet: 2651131616
Equivalent to 158 /8s, 5 /16s and 14 /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: 161991

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

Prefixes being announced by APNIC Region ASes: 107148
Total APNIC prefixes after maximum aggregation: 33133
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 109277
Unique aggregates announced from the APNIC address blocks: 47074
APNIC Region origin ASes present in the Internet Routing Table: 4850
APNIC Prefixes per ASN: 22.53
APNIC Region origin ASes announcing only one prefix: 1237
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: 727
Number of APNIC addresses announced to Internet: 728355072
Equivalent to 43 /8s, 105 /16s and 209 /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: 161714
Total ARIN prefixes after maximum aggregation: 81143
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162434
Unique aggregates announced from the ARIN address blocks: 75792
ARIN Region origin ASes present in the Internet Routing Table: 15865
ARIN Prefixes per ASN: 10.24
ARIN Region origin ASes announcing only one prefix: 5999
ARIN Region transit ASes present in the Internet Routing Table: 1616
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: 33
Number of ARIN addresses announced to Internet: 1072720128
Equivalent to 63 /8s, 240 /16s and 105 /24s
Percentage of available ARIN address space announced: 56.7

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: 118221
Total RIPE prefixes after maximum aggregation: 60842
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122018
Unique aggregates announced from the RIPE address blocks: 78638
RIPE Region origin ASes present in the Internet Routing Table: 17492
RIPE Prefixes per ASN: 6.98
RIPE Region origin ASes announcing only one prefix: 8289
RIPE Region transit ASes present in the Internet Routing Table: 2801
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: 2456
Number of RIPE addresses announced to Internet: 656284896
Equivalent to 39 /8s, 30 /16s and 28 /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: 52045
Total LACNIC prefixes after maximum aggregation: 9768
LACNIC Deaggregation factor: 5.33
Prefixes being announced from the LACNIC address blocks: 57124
Unique aggregates announced from the LACNIC address blocks: 26885
LACNIC Region origin ASes present in the Internet Routing Table: 2020
LACNIC Prefixes per ASN: 28.28
LACNIC Region origin ASes announcing only one prefix: 553
LACNIC Region transit ASes present in the Internet Routing Table: 374
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 25
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 886
Number of LACNIC addresses announced to Internet: 142159104
Equivalent to 8 /8s, 121 /16s and 45 /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: 11659
Total AfriNIC prefixes after maximum aggregation: 2594
AfriNIC Deaggregation factor: 4.49
Prefixes being announced from the AfriNIC address blocks: 12300
Unique aggregates announced from the AfriNIC address blocks: 4054
AfriNIC Region origin ASes present in the Internet Routing Table: 674
AfriNIC Prefixes per ASN: 18.25
AfriNIC Region origin ASes announcing only one prefix: 195
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: 48098048
Equivalent to 2 /8s, 221 /16s and 235 /24s
Percentage of available AfriNIC address space announced: 47.8

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 2138 11550 641 Korea Telecom (KIX)
7545 2094 319 109 TPG Internet Pty Ltd
4755 1770 391 187 TATA Communications formerly
9829 1552 1242 48 BSNL National Internet Backbo
9498 1210 309 74 BHARTI Airtel Ltd.
9583 1189 91 512 Sify Limited
7552 1156 1080 13 Vietel Corporation
24560 1094 380 163 Bharti Airtel Ltd., Telemedia
4808 1087 2026 312 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 3056 3688 56 BellSouth.net Inc.
22773 2191 2939 139 Cox Communications, Inc.
18566 2059 379 179 MegaPath Corporation
1785 2037 684 132 PaeTec Communications, Inc.
20115 1682 1654 607 Charter Communications
4323 1635 1118 419 Time Warner Telecom
701 1502 11144 778 MCI Communications Services,
30036 1389 313 578 Mediacom Communications Corp
7018 1343 17796 878 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 1727 544 17 OJSC "Vimpelcom"
34984 1363 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1122 415 850 Akamai Technologies European
31148 1005 44 18 FreeNet ISP
13188 887 99 52 TOV "Bank-Inform"
6849 862 356 30 JSC UKRTELECOM,
6830 775 2328 427 UPC Distribution Services
8551 764 370 41 Bezeq International
12479 675 798 55 Uni2 Autonomous System
35228 540 246 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 3447 1784 85 NET Servicos de Comunicao S.A
10620 2642 428 237 TVCABLE BOGOTA
7303 1725 1145 232 Telecom Argentina Stet-France
18881 1533 844 20 Global Village Telecom
8151 1348 2850 407 UniNet S.A. de C.V.
11830 867 364 15 Instituto Costarricense de El
27947 819 94 91 Telconet S.A
6147 791 373 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 408 956 9 TEDATA
24835 294 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
36992 227 501 29 Etisalat MISR
29571 223 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 3447 1784 85 NET Servicos de Comunicao S.A
6389 3056 3688 56 BellSouth.net Inc.
17974 2712 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2642 428 237 TVCABLE BOGOTA
22773 2191 2939 139 Cox Communications, Inc.
4766 2138 11550 641 Korea Telecom (KIX)
7545 2094 319 109 TPG Internet Pty Ltd
18566 2059 379 179 MegaPath Corporation
1785 2037 684 132 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 3056 3000 BellSouth.net Inc.
17974 2712 2623 PT TELEKOMUNIKASI INDONESIA
10620 2642 2405 TVCABLE BOGOTA
22773 2191 2052 Cox Communications, Inc.
7545 2094 1985 TPG Internet Pty Ltd
1785 2037 1905 PaeTec Communications, Inc.
18566 2059 1880 MegaPath Corporation
36998 1854 1849 Sudanese Mobile Telephone (ZA
8402 1727 1710 OJSC "Vimpelcom"
4755 1770 1583 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 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
16476 UNALLOCATED 12.46.27.0/24 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
23.91.14.0/24 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 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

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
/13:468 /14:911 /15:1611 /16:12775 /17:6664 /18:11063
/19:22742 /20:32545 /21:35266 /22:49245 /23:43287 /24:246764
/25:45 /26:37 /27:26 /28:38 /29:29 /30:157
/31:10 /32:18

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

ASN No of nets Total ann. Description
18566 2013 2059 MegaPath Corporation
36998 1819 1854 Sudanese Mobile Telephone (ZA
6389 1709 3056 BellSouth.net Inc.
22773 1457 2191 Cox Communications, Inc.
8402 1438 1727 OJSC "Vimpelcom"
30036 1235 1389 Mediacom Communications Corp
11492 1199 1240 Cable One
1785 1086 2037 PaeTec Communications, Inc.
6983 1034 1294 ITC^Deltacom
22561 968 1245 Digital Teleport, Inc

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

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

1:882 2:815 3:3 4:17 5:1023 6:21
8:616 12:1893 13:3 14:870 15:11 16:3
17:18 18:19 20:21 23:514 24:1741 27:1606
31:1488 32:43 33:2 34:5 36:81 37:1898
38:917 39:4 40:181 41:3195 42:246 44:13
46:2014 47:10 49:683 50:829 52:12 54:42
55:6 56:2 57:26 58:1084 59:570 60:371
61:1454 62:1212 63:1988 64:4342 65:2341 66:4142
67:2096 68:1103 69:3296 70:870 71:490 72:2037
74:2549 75:328 76:295 77:1170 78:1033 79:649
80:1287 81:1030 82:653 83:632 84:581 85:1239
86:383 87:1005 88:563 89:1554 90:150 91:5643
92:619 93:1593 94:2020 95:1585 96:510 97:344
98:1041 99:39 100:30 101:373 103:3509 105:527
106:142 107:211 108:515 109:1908 110:958 111:1106
112:587 113:809 114:732 115:1001 116:984 117:811
118:1166 119:1252 120:351 121:729 122:1782 123:1231
124:1301 125:1429 128:600 129:214 130:315 131:659
132:358 133:157 134:544 135:72 136:278 137:263
138:350 139:171 140:165 141:320 142:528 143:406
144:493 145:88 146:519 147:380 148:701 149:366
150:151 151:586 152:411 153:204 154:52 155:490
156:286 157:373 158:279 159:686 160:360 161:452
162:824 163:202 164:631 165:578 166:257 167:632
168:1040 169:121 170:1116 171:184 172:27 173:1604
174:687 175:502 176:1255 177:2415 178:1959 179:208
180:1575 181:828 182:1336 183:460 184:667 185:998
186:2599 187:1480 188:1814 189:1265 190:7215 192:7035
193:5402 194:4028 195:3361 196:1326 197:1033 198:4685
199:5448 200:6064 201:2509 202:8770 203:8796 204:4469
205:2634 206:2751 207:2766 208:3981 209:3638 210:2883
211:1558 212:2139 213:1981 214:890 215:91 216:5372
217:1685 218:619 219:316 220:1275 221:567 222:326
223:502

End of report
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