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.

Monday, November 4, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Tue 05 Nov, 2013

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

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

BGP routing table entries examined: 464068
Prefixes after maximum aggregation: 187746
Deaggregation factor: 2.47
Unique aggregates announced to Internet: 233205
Total ASes present in the Internet Routing Table: 45256
Prefixes per ASN: 10.25
Origin-only ASes present in the Internet Routing Table: 35357
Origin ASes announcing only one prefix: 16274
Transit ASes present in the Internet Routing Table: 5796
Transit-only ASes present in the Internet Routing Table: 157
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: 696
Unregistered ASNs in the Routing Table: 171
Number of 32-bit ASNs allocated by the RIRs: 5301
Number of 32-bit ASNs visible in the Routing Table: 4103
Prefixes from 32-bit ASNs in the Routing Table: 12679
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 932
Number of addresses announced to Internet: 2651209184
Equivalent to 158 /8s, 6 /16s and 61 /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: 162220

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

Prefixes being announced by APNIC Region ASes: 107022
Total APNIC prefixes after maximum aggregation: 33134
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 109150
Unique aggregates announced from the APNIC address blocks: 46957
APNIC Region origin ASes present in the Internet Routing Table: 4850
APNIC Prefixes per ASN: 22.51
APNIC Region origin ASes announcing only one prefix: 1233
APNIC Region transit ASes present in the Internet Routing Table: 806
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: 729
Number of APNIC addresses announced to Internet: 728315904
Equivalent to 43 /8s, 105 /16s and 56 /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: 161609
Total ARIN prefixes after maximum aggregation: 81081
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162332
Unique aggregates announced from the ARIN address blocks: 75754
ARIN Region origin ASes present in the Internet Routing Table: 15861
ARIN Prefixes per ASN: 10.23
ARIN Region origin ASes announcing only one prefix: 6001
ARIN Region transit ASes present in the Internet Routing Table: 1615
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: 1072606976
Equivalent to 63 /8s, 238 /16s and 175 /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: 118445
Total RIPE prefixes after maximum aggregation: 61047
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122230
Unique aggregates announced from the RIPE address blocks: 78864
RIPE Region origin ASes present in the Internet Routing Table: 17497
RIPE Prefixes per ASN: 6.99
RIPE Region origin ASes announcing only one prefix: 8293
RIPE Region transit ASes present in the Internet Routing Table: 2797
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: 2454
Number of RIPE addresses announced to Internet: 656535008
Equivalent to 39 /8s, 33 /16s and 237 /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: 52152
Total LACNIC prefixes after maximum aggregation: 9776
LACNIC Deaggregation factor: 5.33
Prefixes being announced from the LACNIC address blocks: 57171
Unique aggregates announced from the LACNIC address blocks: 26838
LACNIC Region origin ASes present in the Internet Routing Table: 2028
LACNIC Prefixes per ASN: 28.19
LACNIC Region origin ASes announcing only one prefix: 557
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: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 881
Number of LACNIC addresses announced to Internet: 142216192
Equivalent to 8 /8s, 122 /16s and 12 /24s
Percentage of available LACNIC address space announced: 84.8

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: 11609
Total AfriNIC prefixes after maximum aggregation: 2575
AfriNIC Deaggregation factor: 4.51
Prefixes being announced from the AfriNIC address blocks: 12253
Unique aggregates announced from the AfriNIC address blocks: 4043
AfriNIC Region origin ASes present in the Internet Routing Table: 668
AfriNIC Prefixes per ASN: 18.34
AfriNIC Region origin ASes announcing only one prefix: 190
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: 48076288
Equivalent to 2 /8s, 221 /16s and 150 /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 2711 903 89 PT TELEKOMUNIKASI INDONESIA
4766 2139 11550 641 Korea Telecom (KIX)
7545 2090 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
4808 1096 2030 315 CNCGROUP IP network: China169
24560 1093 380 166 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 3056 3688 56 BellSouth.net Inc.
22773 2191 2939 139 Cox Communications, Inc.
18566 2059 379 179 MegaPath Corporation
1785 2036 684 131 PaeTec Communications, Inc.
20115 1681 1654 607 Charter Communications
4323 1637 1118 421 Time Warner Telecom
701 1502 11144 778 MCI Communications Services,
30036 1388 313 578 Mediacom Communications Corp
7018 1345 17797 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 1778 544 17 OJSC "Vimpelcom"
34984 1363 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1110 407 841 Akamai Technologies European
31148 1005 44 18 FreeNet ISP
13188 887 99 59 TOV "Bank-Inform"
6849 861 356 30 JSC UKRTELECOM,
6830 775 2328 427 UPC Distribution Services
8551 759 370 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 3435 1784 85 NET Servicos de Comunicao S.A
10620 2642 428 237 TVCABLE BOGOTA
7303 1724 1144 233 Telecom Argentina Stet-France
18881 1538 844 20 Global Village Telecom
8151 1341 2846 407 UniNet S.A. de C.V.
11830 867 364 15 Instituto Costarricense de El
27947 820 94 93 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 859 338 30 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 396 956 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 3435 1784 85 NET Servicos de Comunicao S.A
6389 3056 3688 56 BellSouth.net Inc.
17974 2711 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2642 428 237 TVCABLE BOGOTA
22773 2191 2939 139 Cox Communications, Inc.
4766 2139 11550 641 Korea Telecom (KIX)
7545 2090 319 109 TPG Internet Pty Ltd
18566 2059 379 179 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 3056 3000 BellSouth.net Inc.
17974 2711 2622 PT TELEKOMUNIKASI INDONESIA
10620 2642 2405 TVCABLE BOGOTA
22773 2191 2052 Cox Communications, Inc.
7545 2090 1981 TPG Internet Pty Ltd
1785 2036 1905 PaeTec Communications, Inc.
18566 2059 1880 MegaPath Corporation
36998 1854 1849 Sudanese Mobile Telephone (ZA
8402 1778 1761 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 /14:910 /15:1608 /16:12778 /17:6660 /18:11058
/19:22719 /20:32494 /21:35264 /22:49328 /23:43353 /24:246661
/25:46 /26:37 /27:26 /28:39 /29:29 /30:157
/31:10 /32:19

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.
8402 1472 1778 OJSC "Vimpelcom"
22773 1457 2191 Cox Communications, Inc.
30036 1235 1388 Mediacom Communications Corp
11492 1199 1240 Cable One
1785 1086 2036 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)
----------------------------------------------

1:879 2:827 3:3 4:17 5:1014 6:21
8:614 12:1892 13:3 14:870 15:11 16:3
17:18 18:19 20:21 23:511 24:1741 27:1606
31:1429 32:43 33:2 34:5 36:81 37:1886
38:917 39:4 40:181 41:3191 42:245 44:13
46:2015 47:10 49:681 50:829 52:12 54:42
55:5 56:2 57:26 58:1051 59:569 60:371
61:1452 62:1212 63:1986 64:4342 65:2346 66:4136
67:2098 68:1102 69:3296 70:870 71:489 72:2036
74:2551 75:328 76:295 77:1173 78:1035 79:643
80:1293 81:1014 82:652 83:632 84:582 85:1240
86:421 87:1008 88:562 89:1589 90:150 91:5644
92:610 93:1597 94:2026 95:1585 96:509 97:345
98:1038 99:39 100:30 101:373 103:3494 105:527
106:142 107:211 108:515 109:1909 110:954 111:1106
112:585 113:808 114:724 115:1003 116:987 117:811
118:1167 119:1250 120:358 121:729 122:1783 123:1233
124:1316 125:1429 128:616 129:214 130:315 131:658
132:358 133:157 134:542 135:67 136:278 137:264
138:350 139:171 140:165 141:320 142:529 143:403
144:492 145:87 146:519 147:379 148:699 149:366
150:148 151:587 152:412 153:204 154:51 155:490
156:287 157:374 158:279 159:686 160:359 161:452
162:822 163:203 164:630 165:577 166:257 167:631
168:1040 169:123 170:1116 171:182 172:25 173:1604
174:687 175:501 176:1266 177:2396 178:1955 179:202
180:1553 181:827 182:1309 183:460 184:666 185:984
186:2664 187:1485 188:1827 189:1268 190:7207 192:7032
193:5403 194:4030 195:3361 196:1325 197:1023 198:4688
199:5444 200:6069 201:2525 202:8730 203:8831 204:4468
205:2627 206:2751 207:2767 208:3986 209:3636 210:2883
211:1558 212:2141 213:1957 214:881 215:91 216:5368
217:1683 218:619 219:316 220:1275 221:567 222:326
223:505

End of report
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