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, December 19, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Fri 20 Dec, 2013

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

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

BGP routing table entries examined: 468346
Prefixes after maximum aggregation: 188968
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 235823
Total ASes present in the Internet Routing Table: 45620
Prefixes per ASN: 10.27
Origin-only ASes present in the Internet Routing Table: 35492
Origin ASes announcing only one prefix: 16272
Transit ASes present in the Internet Routing Table: 5817
Transit-only ASes present in the Internet Routing Table: 152
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 35
Max AS path prepend of ASN ( 55644) 31
Prefixes from unregistered ASNs in the Routing Table: 1027
Unregistered ASNs in the Routing Table: 277
Number of 32-bit ASNs allocated by the RIRs: 5547
Number of 32-bit ASNs visible in the Routing Table: 4311
Prefixes from 32-bit ASNs in the Routing Table: 13460
Number of bogon 32-bit ASNs visible in the Routing Table: 1
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1444
Number of addresses announced to Internet: 2657559392
Equivalent to 158 /8s, 103 /16s and 35 /24s
Percentage of available address space announced: 71.8
Percentage of allocated address space announced: 71.8
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: 163484

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

Prefixes being announced by APNIC Region ASes: 108416
Total APNIC prefixes after maximum aggregation: 33499
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 110678
Unique aggregates announced from the APNIC address blocks: 47863
APNIC Region origin ASes present in the Internet Routing Table: 4843
APNIC Prefixes per ASN: 22.85
APNIC Region origin ASes announcing only one prefix: 1221
APNIC Region transit ASes present in the Internet Routing Table: 820
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 35
Number of APNIC region 32-bit ASNs visible in the Routing Table: 790
Number of APNIC addresses announced to Internet: 727615488
Equivalent to 43 /8s, 94 /16s and 136 /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: 162099
Total ARIN prefixes after maximum aggregation: 81481
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162875
Unique aggregates announced from the ARIN address blocks: 75773
ARIN Region origin ASes present in the Internet Routing Table: 15877
ARIN Prefixes per ASN: 10.26
ARIN Region origin ASes announcing only one prefix: 5998
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: 48
Number of ARIN addresses announced to Internet: 1074065408
Equivalent to 64 /8s, 4 /16s and 240 /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: 118834
Total RIPE prefixes after maximum aggregation: 61302
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122567
Unique aggregates announced from the RIPE address blocks: 79297
RIPE Region origin ASes present in the Internet Routing Table: 17552
RIPE Prefixes per ASN: 6.98
RIPE Region origin ASes announcing only one prefix: 8296
RIPE Region transit ASes present in the Internet Routing Table: 2781
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: 2534
Number of RIPE addresses announced to Internet: 655725408
Equivalent to 39 /8s, 21 /16s and 147 /24s
Percentage of available RIPE address space announced: 95.3

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: 53016
Total LACNIC prefixes after maximum aggregation: 9833
LACNIC Deaggregation factor: 5.39
Prefixes being announced from the LACNIC address blocks: 58330
Unique aggregates announced from the LACNIC address blocks: 27525
LACNIC Region origin ASes present in the Internet Routing Table: 2048
LACNIC Prefixes per ASN: 28.48
LACNIC Region origin ASes announcing only one prefix: 550
LACNIC Region transit ASes present in the Internet Routing Table: 386
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 27
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 931
Number of LACNIC addresses announced to Internet: 146806784
Equivalent to 8 /8s, 192 /16s and 24 /24s
Percentage of available LACNIC address space announced: 87.5

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: 11795
Total AfriNIC prefixes after maximum aggregation: 2608
AfriNIC Deaggregation factor: 4.52
Prefixes being announced from the AfriNIC address blocks: 12452
Unique aggregates announced from the AfriNIC address blocks: 4240
AfriNIC Region origin ASes present in the Internet Routing Table: 699
AfriNIC Prefixes per ASN: 17.81
AfriNIC Region origin ASes announcing only one prefix: 207
AfriNIC Region transit ASes present in the Internet Routing Table: 142
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: 8
Number of AfriNIC addresses announced to Internet: 48645376
Equivalent to 2 /8s, 230 /16s and 69 /24s
Percentage of available AfriNIC address space announced: 48.3

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 2731 902 88 PT TELEKOMUNIKASI INDONESIA
4766 2156 11550 653 Korea Telecom (KIX)
7545 2105 319 112 TPG Internet Pty Ltd
4755 1787 391 190 TATA Communications formerly
9829 1441 1246 37 BSNL National Internet Backbo
9583 1330 104 548 Sify Limited
9498 1229 309 72 BHARTI Airtel Ltd.
7552 1174 1080 13 Vietel Corporation
24560 1098 382 167 Bharti Airtel Ltd., Telemedia
4808 1080 2022 315 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 3028 3688 53 BellSouth.net Inc.
22773 2305 2939 139 Cox Communications, Inc.
1785 2146 687 132 PaeTec Communications, Inc.
18566 2051 379 178 MegaPath Corporation
20115 1681 1662 593 Charter Communications
4323 1641 1097 414 Time Warner Telecom
701 1506 11144 777 MCI Communications Services,
30036 1375 309 574 Mediacom Communications Corp
7018 1314 17764 859 AT&T WorldNet Services
6983 1296 772 581 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 1556 544 16 OJSC "Vimpelcom"
34984 1367 244 224 TELLCOM ILETISIM HIZMETLERI A
20940 1213 459 916 Akamai Technologies European
31148 1011 45 19 FreeNet ISP
13188 900 99 42 TOV "Bank-Inform"
6849 860 363 39 JSC UKRTELECOM,
8551 844 370 38 Bezeq International
6830 773 2328 426 UPC Distribution Services
12479 683 798 53 Uni2 Autonomous System
35228 549 246 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 3426 1839 90 NET Servicos de Comunicao S.A
10620 2689 435 209 Telmex Colombia S.A.
18881 1778 908 20 Global Village Telecom
7303 1740 1163 227 Telecom Argentina Stet-France
8151 1357 2852 423 UniNet S.A. de C.V.
11830 868 364 15 Instituto Costarricense de El
27947 829 94 90 Telconet S.A
6147 788 373 27 Telefonica Del Peru
7738 780 1498 36 Telecomunicacoes da Bahia S.A
6503 772 434 61 AVANTEL, 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 1819 112 5 Sudanese Mobile Telephone (ZA
24863 891 338 26 LINKdotNET AS number
6713 598 653 27 Itissalat Al-MAGHRIB
8452 420 956 9 TEDATA
24835 298 144 9 RAYA Telecom - Egypt
3741 247 921 209 The Internet Solution
36992 247 526 30 Etisalat MISR
29571 238 21 14 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 3426 1839 90 NET Servicos de Comunicao S.A
6389 3028 3688 53 BellSouth.net Inc.
17974 2731 902 88 PT TELEKOMUNIKASI INDONESIA
10620 2689 435 209 Telmex Colombia S.A.
22773 2305 2939 139 Cox Communications, Inc.
4766 2156 11550 653 Korea Telecom (KIX)
1785 2146 687 132 PaeTec Communications, Inc.
7545 2105 319 112 TPG Internet Pty Ltd
18566 2051 379 178 MegaPath Corporation
36998 1819 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 3028 2975 BellSouth.net Inc.
17974 2731 2643 PT TELEKOMUNIKASI INDONESIA
10620 2689 2480 Telmex Colombia S.A.
22773 2305 2166 Cox Communications, Inc.
1785 2146 2014 PaeTec Communications, Inc.
7545 2105 1993 TPG Internet Pty Ltd
18566 2051 1873 MegaPath Corporation
36998 1819 1814 Sudanese Mobile Telephone (ZA
18881 1778 1758 Global Village Telecom
4755 1787 1597 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
23.91.4.0/24 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.
23.91.120.0/21 36351 SoftLayer Technologies 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 /12:253
/13:468 /14:926 /15:1618 /16:12793 /17:6660 /18:11111
/19:22904 /20:32695 /21:35494 /22:49982 /23:43606 /24:249559
/25:41 /26:33 /27:17 /28:18 /29:7 /30:2
/31:0 /32:9

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

ASN No of nets Total ann. Description
18566 2006 2051 MegaPath Corporation
36998 1786 1819 Sudanese Mobile Telephone (ZA
6389 1699 3028 BellSouth.net Inc.
22773 1555 2305 Cox Communications, Inc.
8402 1312 1556 OJSC "Vimpelcom"
30036 1216 1375 Mediacom Communications Corp
1785 1163 2146 PaeTec Communications, Inc.
11492 1148 1185 Cable One
6983 1037 1296 ITC^Deltacom
22561 977 1252 Digital Teleport, Inc

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

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

1:921 2:722 3:3 4:16 5:789 6:21
8:616 12:1882 13:3 14:877 15:9 16:3
17:19 18:19 20:34 23:613 24:1753 27:1693
31:1494 32:43 33:2 34:5 36:105 37:1902
38:921 39:3 40:182 41:3215 42:236 44:13
46:2082 47:10 49:702 50:854 52:12 54:44
55:5 56:4 57:26 58:1067 59:580 60:369
61:1472 62:1222 63:1977 64:4390 65:2330 66:4134
67:2114 68:1084 69:3291 70:906 71:511 72:2024
74:2579 75:322 76:294 77:1210 78:980 79:677
80:1283 81:1085 82:644 83:754 84:623 85:1262
86:392 87:1012 88:519 89:1564 90:150 91:5727
92:623 93:1582 94:2093 95:1454 96:519 97:351
98:1076 99:41 100:32 101:447 103:3818 105:532
106:144 107:253 108:528 109:2047 110:961 111:1134
112:586 113:809 114:736 115:1004 116:993 117:793
118:1238 119:1253 120:333 121:734 122:1793 123:1235
124:1348 125:1447 128:551 129:217 130:339 131:659
132:349 133:159 134:296 135:73 136:276 137:246
138:353 139:165 140:173 141:336 142:538 143:402
144:494 145:90 146:541 147:420 148:725 149:359
150:152 151:477 152:410 153:208 154:51 155:519
156:309 157:367 158:284 159:698 160:359 161:450
162:949 163:207 164:624 165:578 166:279 167:641
168:1037 169:119 170:1152 171:185 172:12 173:1713
174:675 175:529 176:1276 177:2606 178:1886 179:343
180:1596 181:916 182:1412 183:475 184:622 185:1136
186:2783 187:1464 188:1947 189:1251 190:7276 192:7001
193:5457 194:4029 195:3379 196:1343 197:1088 198:4728
199:5490 200:6040 201:2535 202:8802 203:8857 204:4461
205:2613 206:2816 207:2755 208:3946 209:3686 210:2940
211:1606 212:2180 213:1971 214:873 215:84 216:5423
217:1723 218:614 219:314 220:1269 221:587 222:329
223:548

End of report
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