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Spoofing Information for AS 3356 (LEVEL3)

Spoofing status per IP block (all dates)

Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
IP blockLatest testSpoof
Private
Spoof
Routable
4.1.174.x/242022-12-12 14:29:24 GMTblockedblocked
4.2.233.x/242023-12-08 18:53:26 GMTblockedblocked
4.4.226.x/242023-04-05 12:46:06 GMTblockedblocked
4.7.5.x/242020-11-05 21:02:16 GMTblockedblocked
4.7.53.x/242019-04-09 14:04:05 GMTrewrittenblocked
4.14.17.x/242019-11-02 09:59:54 GMTblockedblocked
4.14.18.x/242018-10-05 20:46:28 GMTblockedblocked
4.14.43.x/242018-07-17 20:14:08 GMTblockedblocked
4.14.52.x/242017-10-05 17:27:10 GMTrewrittenrewritten
4.14.63.x/242017-09-22 00:25:49 GMTrewrittenrewritten
4.14.108.x/242017-08-04 17:12:30 GMTblockedblocked
4.14.115.x/242017-02-13 17:10:04 GMTblockedblocked
4.14.191.x/242023-05-11 20:24:16 GMTrewrittenrewritten
4.14.210.x/242018-12-21 15:51:10 GMTrewrittenrewritten
4.15.37.x/242016-12-05 15:29:57 GMTblockedblocked
4.15.64.x/242018-06-21 14:04:05 GMTblockedblocked
4.15.82.x/242017-05-05 19:33:59 GMTblockedblocked
4.15.162.x/242018-03-23 16:44:23 GMTblockedblocked
4.15.172.x/242016-12-07 15:16:39 GMTrewrittenrewritten
4.15.236.x/242017-09-01 13:54:24 GMTblockedblocked
4.15.240.x/242018-06-24 21:34:44 GMTblockedblocked
4.16.0.x/242023-06-15 20:25:21 GMTblockedblocked
4.16.12.x/242019-02-28 14:04:36 GMTrewrittenrewritten
4.16.14.x/242019-03-01 23:25:46 GMTblockedblocked
4.16.35.x/242017-03-18 18:52:27 GMTblockedblocked
4.16.40.x/242017-07-27 20:50:08 GMTblockedblocked
4.16.56.x/242019-08-30 17:47:28 GMTblockedblocked
4.16.63.x/242019-11-25 13:03:28 GMTblockedblocked
4.16.65.x/242019-01-11 15:24:42 GMTblockedblocked
4.16.104.x/242017-10-30 01:09:31 GMTblockedblocked
4.16.139.x/242017-12-08 19:34:48 GMTblockedblocked
4.16.146.x/242019-03-18 09:26:33 GMTrewrittenrewritten
4.16.199.x/242018-02-07 00:08:03 GMTblockedblocked
4.28.11.x/242019-08-14 20:38:58 GMTblockedblocked
4.28.22.x/242019-10-15 15:55:57 GMTblockedblocked
4.28.145.x/242019-09-20 16:27:10 GMTblockedblocked
4.30.75.x/242016-11-16 14:21:56 GMTblockedblocked
4.30.101.x/242016-11-09 19:17:48 GMTrewrittenrewritten
4.30.103.x/242017-02-22 14:07:41 GMTblockedblocked
4.30.124.x/242019-09-23 17:01:35 GMTrewrittenblocked
4.30.179.x/242020-10-19 16:07:33 GMTblockedblocked
4.31.26.x/242016-09-23 18:13:49 GMTrewrittenblocked
4.33.222.x/242023-08-30 22:50:58 GMTblockedblocked
4.34.49.x/242016-02-11 20:44:22 GMTblockedblocked
4.34.62.x/242016-03-06 00:19:18 GMTblockedreceived
4.34.109.x/242018-06-12 15:06:42 GMTblockedblocked
4.35.36.x/242018-12-31 04:22:27 GMTblockedblocked
4.35.119.x/242017-10-30 17:10:51 GMTblockedblocked
4.35.161.x/242023-11-11 06:09:26 GMTblockedblocked
4.35.165.x/242017-11-23 17:35:19 GMTblockedblocked
4.35.243.x/242018-01-27 00:15:26 GMTblockedblocked
4.53.20.x/242018-08-12 18:45:07 GMTblockedblocked
4.53.148.x/242023-05-19 18:19:50 GMTrewrittenrewritten
4.59.63.x/242016-07-15 23:20:49 GMTblockedblocked
4.59.69.x/242017-05-31 22:40:01 GMTrewrittenrewritten
4.68.55.x/242016-10-27 15:50:06 GMTblockedblocked
4.71.155.x/242020-03-04 15:52:36 GMTunknownblocked
8.9.86.x/242021-05-05 21:24:10 GMTblockedreceived
8.9.88.x/242021-10-06 21:34:28 GMTblockedblocked
8.9.89.x/242020-05-13 18:12:51 GMTblockedblocked
8.9.91.x/242020-06-24 02:45:50 GMTblockedblocked
8.9.92.x/242021-05-10 23:42:31 GMTblockedblocked
8.9.94.x/242020-07-21 13:08:24 GMTblockedblocked
8.9.95.x/242022-02-26 22:37:53 GMTblockedblocked
8.14.157.x/242023-08-17 06:56:09 GMTrewrittenreceived
8.25.222.x/242019-08-14 02:53:10 GMTblockedblocked
8.26.155.x/242024-02-21 16:33:58 GMTrewrittenrewritten
8.30.81.x/242018-05-02 15:42:30 GMTrewrittenreceived
8.39.8.x/242024-01-11 17:33:56 GMTrewrittenrewritten
8.39.145.x/242023-12-21 21:08:53 GMTblockedreceived
8.39.147.x/242018-02-07 00:02:33 GMTblockedblocked
8.41.64.x/242019-07-22 12:18:21 GMTblockedblocked
8.41.65.x/242018-10-05 16:30:32 GMTblockedblocked
8.47.96.x/242019-07-18 20:10:06 GMTblockedblocked
8.48.254.x/242023-02-11 15:55:30 GMTblockedblocked
8.48.255.x/242023-01-14 03:28:11 GMTblockedblocked
8.242.92.x/242024-02-01 14:07:17 GMTblockedblocked
63.211.229.x/242022-06-12 03:15:20 GMTblockedblocked
65.57.178.x/242023-09-11 22:07:33 GMTrewrittenreceived
75.103.10.x/242020-08-27 17:25:56 GMTblockedblocked
88.150.250.x/242018-04-05 19:12:50 GMTblockedblocked
88.150.251.x/242018-03-28 16:27:32 GMTblockedblocked
131.196.198.x/242019-10-30 23:11:59 GMTblockedreceived
192.121.246.x/242020-07-04 14:50:17 GMTblockedblocked
193.234.95.x/242020-07-04 20:22:05 GMTblockedblocked
202.1.195.x/242018-03-02 20:08:10 GMTreceivedreceived
216.202.171.x/242023-12-11 14:46:30 GMTblockedreceived
217.163.2.x/242018-03-22 14:53:26 GMTblockedblocked
2001:1900:22xx::/402023-12-21 21:08:53 GMTblockedreceived

Customers of AS 3356 we have spoofer tests from

This is the list of directly connected customers of AS 3356 from which we have received a spoofer test, ordered by the customer's ability to send spoofed packets and the number of prefixes of an inferred ingress ACL derived from prefix announcements for the customer recorded in the latest month of public BGP data. BCP-84 describes ingress ACLs as "the most bulletproof solution when done properly" and the "best fit ... when the configuration is not too dynamic, ... if the number of used prefixes is low." Further detail about the size and dynamism of an inferred ACL is available by following the History link for each AS.

ASNCountryNumber of Prefixes
in Customer Cone
Number of ASes
in Customer Cone
Recent
tests
Spoof
Routable
269359bra (Brazil)40AS 269359 testsreceived
268538bra (Brazil)41AS 268538 testsreceived
207176 (OPENFIBER)nld (Netherlands)70AS 207176 testsreceived
264096bra (Brazil)84AS 264096 testsreceived
11815arg (Argentina)112AS 11815 testsreceived
52794bra (Brazil)112AS 52794 testsreceived
7131 (PTIPACIFICAINC-AS-AP)gum (Guam [US])191AS 7131 testsreceived
268235bra (Brazil)3718AS 268235 testsreceived
20847 (PREVIDER-AS)nld (Netherlands)4112AS 20847 testsreceived
52531bra (Brazil)4115AS 52531 testsreceived
61461ven (Venezuela)5420AS 61461 testsreceived
3701 (NERONET)usa (United States)6813AS 3701 testsreceived
14282bra (Brazil)14349AS 14282 testsreceived
28186bra (Brazil)363153AS 28186 testsreceived
28210bra (Brazil)126555AS 28210 testsreceived
28146bra (Brazil)1851306AS 28146 testsreceived
35297 (DATALINE-AS)ukr (Ukraine)1895633AS 35297 testsreceived
16637 (MTNNS-AS)zaf (South Africa)2759357AS 16637 testsreceived
8452 (TE-AS)egy (Egypt)4719159AS 8452 testsreceived
7303arg (Argentina)6909562AS 7303 testsreceived
30844 (LIQUID-AS)tza (Tanzania)534063537AS 30844 testsreceived
3549 (LVLT-3549)chl (Chile)11793113187AS 3549 testsreceived
4637 (ASN-TELSTRA-GLOBAL)hkg (Hong Kong)14272913741AS 4637 testsreceived
32484usa (United States)20AS 32484 testsblocked
202032 (GOLINE)che (Switzerland)20AS 202032 testsblocked
1712 (FR-RENATER-ENST)fra (France)30AS 1712 testsblocked
213230 (HETZNER-CLOUD2-AS)usa (United States)30AS 213230 testsblocked
270068per (Peru)40AS 270068 testsblocked
272022bra (Brazil)40AS 272022 testsblocked
2552 (WUSTL-ASN)usa (United States)50AS 2552 testsblocked
25581 (GMG)lie (Liechtenstein)50AS 25581 testsblocked
268207bra (Brazil)62AS 268207 testsblocked
266192bra (Brazil)72AS 266192 testsblocked
55 (UPENN)usa (United States)81AS 55 testsblocked
53167bra (Brazil)93AS 53167 testsblocked
12876 (AS12876)nld (Netherlands)110AS 12876 testsblocked
21599pan (Panama)121AS 21599 testsblocked
263445bra (Brazil)125AS 263445 testsblocked
40401 (BACKBLAZE)usa (United States)131AS 40401 testsblocked
36678 (CTUSA)usa (United States)151AS 36678 testsblocked
263569bra (Brazil)182AS 263569 testsblocked
13122 (MANX-AS)imn (Isle of Man)192AS 13122 testsblocked
3685 (BUFFALO-ASN)usa (United States)203AS 3685 testsblocked
262731bra (Brazil)206AS 262731 testsblocked
46632 (SOUTHWEST-ARKANSAS-TELEPHONE-COOPERATIVE)usa (United States)244AS 46632 testsblocked
8893 (ARTFILES-AS)deu (Germany)256AS 8893 testsblocked
262300bra (Brazil)2611AS 262300 testsblocked
8895 (ISU)sau (Saudi Arabia)278AS 8895 testsblocked
22898 (ATLINK)usa (United States)313AS 22898 testsblocked
6568bol (Bolivia)3717AS 6568 testsblocked
21472 (SERVERHOUSE)gbr (United Kingdom)385AS 21472 testsblocked
21928 (T-MOBILE-AS21928)usa (United States)472AS 21928 testsblocked
52771bra (Brazil)4816AS 52771 testsblocked
5607 (BSKYB-BROADBAND-AS)gbr (United Kingdom)663AS 5607 testsblocked
201838 (ASN-COMMUNITYFIBRE)gbr (United Kingdom)850AS 201838 testsblocked
39642 (DK-ESS-AS)dnk (Denmark)8916AS 39642 testsblocked
14593 (SPACEX-STARLINK)ukr (Ukraine)1211AS 14593 testsblocked
8422 (NETCOLOGNE)deu (Germany)12232AS 8422 testsblocked
9063 (SAARGATE-AS)deu (Germany)13526AS 9063 testsblocked
22995 (BARR-XPLR-ASN)can (Canada)14813AS 22995 testsblocked
13285 (OPALTELECOM-AS)gbr (United Kingdom)14919AS 13285 testsblocked
50266 (tmobile-thuis)nld (Netherlands)15723AS 50266 testsblocked
17222bra (Brazil)16458AS 17222 testsblocked
16097 (HLKOMM)deu (Germany)17236AS 16097 testsblocked
14061 (DIGITALOCEAN-ASN)ind (India)2062AS 14061 testsblocked
9500 (VODAFONE-TRANSIT-AS)nzl (New Zealand)20938AS 9500 testsblocked
6128 (CABLE-NET-1)usa (United States)2242AS 6128 testsblocked
9125 (ORIONTELEKOM-AS)srb (Serbia)33032AS 9125 testsblocked
262907bra (Brazil)334129AS 262907 testsblocked
53181bra (Brazil)340124AS 53181 testsblocked
53181bra (Brazil)340124AS 53181 testsblocked
19108 (SUDDENLINK-COMMUNICATIONS)usa (United States)38178AS 19108 testsblocked
16276 (OVH)fra (France)38439AS 16276 testsblocked
14265 (US-TELEPACIFIC)usa (United States)40440AS 14265 testsblocked
60011 (MYTHIC-BEASTS-USA)usa (United States)42641AS 60011 testsblocked
15704 (AS15704)esp (Spain)44661AS 15704 testsblocked
15576 (NTS)che (Switzerland)45388AS 15576 testsblocked
22047chl (Chile)4541AS 22047 testsblocked
13213 (UK2NET-AS)gbr (United Kingdom)5009AS 13213 testsblocked
786 (JANET)gbr (United Kingdom)50142AS 786 testsblocked
15557 (LDCOMNET)fra (France)515101AS 15557 testsblocked
12479 (UNI2-AS)esp (Spain)528124AS 12479 testsblocked
12083 (WOW-INTERNET)usa (United States)58658AS 12083 testsblocked
1267 (ASN-WINDTRE)ita (Italy)646152AS 1267 testsblocked
49981 (WorldStream)nld (Netherlands)72964AS 49981 testsblocked
8767 (MNET-AS)deu (Germany)80379AS 8767 testsblocked
56911 (ASN-WARIAN)ita (Italy)85022AS 56911 testsblocked
8881 (VERSATEL)deu (Germany)889215AS 8881 testsblocked
12874 (FASTWEB)ita (Italy)901237AS 12874 testsblocked
2152 (CSUNET-NW)usa (United States)931149AS 2152 testsblocked
2152 (CSUNET-NW)usa (United States)931149AS 2152 testsblocked
11492 (CABLEONE)usa (United States)112358AS 11492 testsblocked
10796 (TWC-10796-MIDWEST)usa (United States)1168200AS 10796 testsblocked
62240 (Clouvider)nld (Netherlands)129436AS 62240 testsblocked
9541 (CYBERNET-AP)pak (Pakistan)132032AS 9541 testsblocked
11232 (MIDCO-NET)usa (United States)132371AS 11232 testsblocked
28126bra (Brazil)1361129AS 28126 testsblocked
6079 (RCN-AS)usa (United States)1362156AS 6079 testsblocked
3737 (AS-PTD)usa (United States)140353AS 3737 testsblocked
24940 (HETZNER-AS)fin (Finland)147767AS 24940 testsblocked
28343bra (Brazil)1602165AS 28343 testsblocked
917usa (United States)1614145AS 917 testsblocked
5603 (SIOL-NET)svn (Slovenia)1638239AS 5603 testsblocked
12578 (APOLLO-AS)lva (Latvia)1679191AS 12578 testsblocked
5650 (FRONTIER-FRTR)usa (United States)1761295AS 5650 testsblocked
8708 (RCS-RDS)rou (Romania)1911381AS 8708 testsblocked
43350 (NFORCE)nld (Netherlands)1952142AS 43350 testsblocked
852 (ASN852)can (Canada)2084285AS 852 testsblocked
23106bra (Brazil)2154439AS 23106 testsblocked
8447 (A1TELEKOM-AT)aut (Austria)2395493AS 8447 testsblocked
29802 (HVC-AS)usa (United States)2616118AS 29802 testsblocked
8151mex (Mexico)321594AS 8151 testsblocked
8400 (TELEKOM-AS)srb (Serbia)3241253AS 8400 testsblocked
9009 (M247)usa (United States)5760152AS 9009 testsblocked
1680 (NV-ASN)isr (Israel)6091228AS 1680 testsblocked
6327 (SHAW)can (Canada)6177494AS 6327 testsblocked
20115 (CHARTER-20115)usa (United States)74111175AS 20115 testsblocked
3786 (LGDACOM)kor (South Korea)7427525AS 3786 testsblocked
20473 (AS-CHOOPA)usa (United States)77391363AS 20473 testsblocked
396356 (MAXIHOST)usa (United States)8744323AS 396356 testsblocked
577 (BACOM)can (Canada)10227915AS 577 testsblocked
4230bra (Brazil)119443493AS 4230 testsblocked
4837 (CHINA169-Backbone)chn (China)12172380AS 4837 testsblocked
2516 (KDDI)jpn (Japan)12257664AS 2516 testsblocked
2497 (IIJ)jpn (Japan)12698795AS 2497 testsblocked
9121 (TTNet)tur (Turkey)12794914AS 9121 testsblocked
10429bra (Brazil)133393679AS 10429 testsblocked
60068 (CDN77)usa (United States)15389742AS 60068 testsblocked
52468cri (Costa Rica)155501838AS 52468 testsblocked
4809 (CHINATELECOM-CORE-WAN-CN2)chn (China)20374728AS 4809 testsblocked
3303 (SWISSCOM)che (Switzerland)248812821AS 3303 testsblocked
812 (ROGERS-COMMUNICATIONS)can (Canada)262921234AS 812 testsblocked
4134 (CHINANET-BACKBONE)chn (China)26954857AS 4134 testsblocked
262589col (Colombia)278323656AS 262589 testsblocked
4657 (STARHUB-INTERNET)sgp (Singapore)305311370AS 4657 testsblocked
8359 (MTS)rus (Russian Federation)310923991AS 8359 testsblocked
7922 (COMCAST-7922)usa (United States)319192511AS 7922 testsblocked
4766 (KIXS-AS-KR)kor (South Korea)10722810331AS 4766 testsblocked
4826 (VOCUS-BACKBONE-AS)aus (Australia)18375422264AS 4826 testsblocked

Address Space Announcement History

The customer cone for 3356 is too large for a prefix list to be useful.

Last Modified