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.

Sunday, November 10, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Mon 11 Nov, 2013

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

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

BGP routing table entries examined: 464973
Prefixes after maximum aggregation: 187836
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 233530
Total ASes present in the Internet Routing Table: 45271
Prefixes per ASN: 10.27
Origin-only ASes present in the Internet Routing Table: 35365
Origin ASes announcing only one prefix: 16268
Transit ASes present in the Internet Routing Table: 5784
Transit-only ASes present in the Internet Routing Table: 150
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: 45270
Unregistered ASNs in the Routing Table: 8808
Number of 32-bit ASNs allocated by the RIRs: 5329
Number of 32-bit ASNs visible in the Routing Table: 4122
Prefixes from 32-bit ASNs in the Routing Table: 12868
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1021
Number of addresses announced to Internet: 2652177248
Equivalent to 158 /8s, 21 /16s and 3 /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: 162305

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

Prefixes being announced by APNIC Region ASes: 107292
Total APNIC prefixes after maximum aggregation: 33266
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 109467
Unique aggregates announced from the APNIC address blocks: 47264
APNIC Region origin ASes present in the Internet Routing Table: 4838
APNIC Prefixes per ASN: 22.63
APNIC Region origin ASes announcing only one prefix: 1233
APNIC Region transit ASes present in the Internet Routing Table: 808
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: 733
Number of APNIC addresses announced to Internet: 728521216
Equivalent to 43 /8s, 108 /16s and 90 /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: 161792
Total ARIN prefixes after maximum aggregation: 81172
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162433
Unique aggregates announced from the ARIN address blocks: 75753
ARIN Region origin ASes present in the Internet Routing Table: 15868
ARIN Prefixes per ASN: 10.24
ARIN Region origin ASes announcing only one prefix: 6004
ARIN Region transit ASes present in the Internet Routing Table: 1610
Average ARIN Region AS path length visible: 3.5
Max ARIN Region AS path length visible: 20
Number of ARIN region 32-bit ASNs visible in the Routing Table: 34
Number of ARIN addresses announced to Internet: 1072743168
Equivalent to 63 /8s, 240 /16s and 195 /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: 118560
Total RIPE prefixes after maximum aggregation: 60876
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 122425
Unique aggregates announced from the RIPE address blocks: 78753
RIPE Region origin ASes present in the Internet Routing Table: 17493
RIPE Prefixes per ASN: 7.00
RIPE Region origin ASes announcing only one prefix: 8288
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: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2462
Number of RIPE addresses announced to Internet: 656652384
Equivalent to 39 /8s, 35 /16s and 184 /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: 52130
Total LACNIC prefixes after maximum aggregation: 9799
LACNIC Deaggregation factor: 5.32
Prefixes being announced from the LACNIC address blocks: 57210
Unique aggregates announced from the LACNIC address blocks: 26907
LACNIC Region origin ASes present in the Internet Routing Table: 2027
LACNIC Prefixes per ASN: 28.22
LACNIC Region origin ASes announcing only one prefix: 549
LACNIC Region transit ASes present in the Internet Routing Table: 382
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 22
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 887
Number of LACNIC addresses announced to Internet: 142584832
Equivalent to 8 /8s, 127 /16s and 172 /24s
Percentage of available LACNIC address space announced: 85.0

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: 11768
Total AfriNIC prefixes after maximum aggregation: 2581
AfriNIC Deaggregation factor: 4.56
Prefixes being announced from the AfriNIC address blocks: 12417
Unique aggregates announced from the AfriNIC address blocks: 4024
AfriNIC Region origin ASes present in the Internet Routing Table: 674
AfriNIC Prefixes per ASN: 18.42
AfriNIC Region origin ASes announcing only one prefix: 194
AfriNIC Region transit ASes present in the Internet Routing Table: 127
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: 48035328
Equivalent to 2 /8s, 220 /16s and 246 /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 2714 903 89 PT TELEKOMUNIKASI INDONESIA
4766 2138 11550 641 Korea Telecom (KIX)
7545 2097 319 110 TPG Internet Pty Ltd
4755 1771 391 187 TATA Communications formerly
9829 1542 1242 46 BSNL National Internet Backbo
9498 1211 309 74 BHARTI Airtel Ltd.
9583 1190 91 513 Sify Limited
7552 1147 1080 13 Vietel Corporation
24560 1094 380 163 Bharti Airtel Ltd., Telemedia
4808 1086 2024 311 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 3054 3688 56 BellSouth.net Inc.
22773 2197 2939 139 Cox Communications, Inc.
18566 2058 379 178 MegaPath Corporation
1785 2038 684 132 PaeTec Communications, Inc.
20115 1683 1654 608 Charter Communications
4323 1638 1118 421 Time Warner Telecom
701 1504 11146 780 MCI Communications Services,
30036 1386 313 577 Mediacom Communications Corp
7018 1345 17795 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 1907 544 17 OJSC "Vimpelcom"
34984 1362 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1128 417 850 Akamai Technologies European
31148 1005 44 18 FreeNet ISP
13188 888 99 48 TOV "Bank-Inform"
6849 849 356 30 JSC UKRTELECOM,
8551 782 370 41 Bezeq International
6830 774 2328 426 UPC Distribution Services
12479 677 798 55 Uni2 Autonomous System
35228 542 246 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 3450 1788 85 NET Servicos de Comunicao S.A
10620 2648 429 233 >>UNKNOWN<<
7303 1727 1146 232 Telecom Argentina Stet-France
18881 1548 908 20 Global Village Telecom
8151 1345 2849 413 UniNet S.A. de C.V.
11830 867 364 15 Instituto Costarricense de El
27947 819 94 91 Telconet S.A
6503 787 434 63 AVANTEL, S.A.
7738 780 1498 36 Telecomunicacoes da Bahia S.A
26615 758 1749 26 Tim Brasil 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 894 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 416 956 9 TEDATA
24835 298 144 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 3450 1788 85 NET Servicos de Comunicao S.A
6389 3054 3688 56 BellSouth.net Inc.
17974 2714 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2648 429 233 >>UNKNOWN<<
22773 2197 2939 139 Cox Communications, Inc.
4766 2138 11550 641 Korea Telecom (KIX)
7545 2097 319 110 TPG Internet Pty Ltd
18566 2058 379 178 MegaPath Corporation
1785 2038 684 132 PaeTec Communications, Inc.
8402 1907 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 3054 2998 BellSouth.net Inc.
17974 2714 2625 PT TELEKOMUNIKASI INDONESIA
10620 2648 2415 >>UNKNOWN<<
22773 2197 2058 Cox Communications, Inc.
7545 2097 1987 TPG Internet Pty Ltd
1785 2038 1906 PaeTec Communications, Inc.
8402 1907 1890 OJSC "Vimpelcom"
18566 2058 1880 MegaPath Corporation
36998 1864 1859 Sudanese Mobile Telephone (ZA
4755 1771 1584 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
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
13938 UNALLOCATED 12.33.114.0/24 7018 AT&T WorldNet Servic
13938 UNALLOCATED 12.41.54.0/24 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

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 /12:254
/13:469 /14:912 /15:1609 /16:12778 /17:6666 /18:11084
/19:22838 /20:32560 /21:35331 /22:49302 /23:43378 /24:247259
/25:46 /26:38 /27:26 /28:38 /29:33 /30:173
/31:10 /32:19

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 1707 3054 BellSouth.net Inc.
8402 1575 1907 OJSC "Vimpelcom"
22773 1460 2197 Cox Communications, Inc.
30036 1231 1386 Mediacom Communications Corp
11492 1192 1232 Cable One
1785 1086 2038 PaeTec Communications, Inc.
6983 1034 1294 ITC^Deltacom
22561 972 1249 Digital Teleport, Inc

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

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

1:896 2:842 3:3 4:17 5:1022 6:21
8:615 12:1898 13:3 14:871 15:11 16:3
17:18 18:19 20:21 23:538 24:1742 27:1628
31:1489 32:43 33:2 34:5 36:84 37:1913
38:914 39:5 40:181 41:3249 42:263 44:13
46:2013 47:10 49:688 50:826 52:12 54:42
55:5 56:4 57:26 58:1085 59:566 60:373
61:1453 62:1223 63:1987 64:4344 65:2342 66:4147
67:2112 68:1106 69:3296 70:871 71:489 72:2044
74:2552 75:315 76:296 77:1164 78:1038 79:667
80:1300 81:1036 82:642 83:631 84:581 85:1255
86:382 87:1003 88:558 89:1558 90:150 91:5641
92:623 93:1606 94:2032 95:1617 96:506 97:345
98:1043 99:40 100:30 101:377 103:3537 105:527
106:142 107:213 108:517 109:1933 110:965 111:1110
112:584 113:806 114:725 115:998 116:989 117:811
118:1170 119:1252 120:328 121:731 122:1783 123:1235
124:1324 125:1438 128:639 129:215 130:315 131:657
132:359 133:157 134:544 135:67 136:283 137:232
138:350 139:171 140:170 141:319 142:530 143:399
144:498 145:88 146:517 147:393 148:707 149:367
150:135 151:587 152:409 153:205 154:51 155:501
156:288 157:370 158:278 159:689 160:360 161:452
162:838 163:205 164:629 165:579 166:258 167:634
168:1037 169:121 170:1116 171:182 172:27 173:1589
174:687 175:499 176:1290 177:2436 178:1958 179:215
180:1579 181:842 182:1338 183:463 184:668 185:1001
186:2639 187:1482 188:1863 189:1246 190:7111 192:6980
193:5415 194:4047 195:3366 196:1336 197:1063 198:4681
199:5442 200:6059 201:2459 202:8794 203:8769 204:4468
205:2627 206:2752 207:2764 208:4001 209:3640 210:2889
211:1559 212:2152 213:1996 214:895 215:91 216:5388
217:1687 218:618 219:316 220:1276 221:569 222:327
223:500

End of report
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