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Spoofing Information for AS 174 (COGENT-174)

Spoofing status per IP block for last year of data

(Results for all dates also available.)
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
38.77.21.x/242023-05-18 02:40:34 GMTblockedblocked
38.87.14.x/242023-08-06 20:43:16 GMTrewrittenrewritten
38.88.11.x/242024-02-15 16:47:25 GMTblockedblocked
38.100.141.x/242023-11-09 14:15:11 GMTrewrittenblocked
38.104.7.x/242023-05-29 20:12:40 GMTblockedblocked
38.122.127.x/242023-06-21 20:04:54 GMTblockedblocked
38.142.250.x/242024-03-09 20:57:04 GMTblockedblocked
50.7.187.x/242023-04-10 13:18:38 GMTblockedblocked
102.129.152.x/242023-09-02 11:00:03 GMTrewrittenrewritten
102.129.153.x/242024-01-21 12:00:05 GMTrewrittenrewritten
191.96.150.x/242024-02-29 15:09:07 GMTblockedblocked

Customers of AS 174 we have spoofer tests from

This is the list of directly connected customers of AS 174 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
6810 (BEZEK)isr (Israel)60AS 6810 testsreceived
207176 (OPENFIBER)nld (Netherlands)70AS 207176 testsreceived
37371 (HORMUUD)som (Somalia)83AS 37371 testsreceived
134707 (RCC-AS-AP)phl (Philippines)103AS 134707 testsreceived
12183 (TALKIE-COMMUNICATIONS)usa (United States)120AS 12183 testsreceived
20412 (CLARITY-TELECOM)usa (United States)402AS 20412 testsreceived
61461ven (Venezuela)5619AS 61461 testsreceived
3701 (NERONET)usa (United States)6713AS 3701 testsreceived
33544 (WILINE)usa (United States)757AS 33544 testsreceived
14282bra (Brazil)15250AS 14282 testsreceived
19429col (Colombia)18421AS 19429 testsreceived
36947 (ALGTEL-AS)dza (Algeria)109115AS 36947 testsreceived
55821 (RADIUSTELECOMS-AS-AP)phl (Philippines)141342AS 55821 testsreceived
35297 (DATALINE-AS)ukr (Ukraine)1863622AS 35297 testsreceived
16637 (MTNNS-AS)zaf (South Africa)2483296AS 16637 testsreceived
8452 (TE-AS)egy (Egypt)4338150AS 8452 testsreceived
17557 (PKTELECOM-AS-PK)pak (Pakistan)4642342AS 17557 testsreceived
17494 (BTTB-AS-AP)bgd (Bangladesh)59701189AS 17494 testsreceived
45758 (TTBP-AS-AP)tha (Thailand)9573455AS 45758 testsreceived
16735bra (Brazil)346675912AS 16735 testsreceived
30844 (LIQUID-AS)tza (Tanzania)671024797AS 30844 testsreceived
92 (CLARKSON-AS)usa (United States)20AS 92 testsblocked
21709 (IMPLEX-NET)usa (United States)20AS 21709 testsblocked
21709 (IMPLEX-NET)usa (United States)20AS 21709 testsblocked
39875 (W3Z)gbr (United Kingdom)20AS 39875 testsblocked
29449 (IP-TELECOM-AS)ita (Italy)30AS 29449 testsblocked
211493 (TAGSYSTEMS)lie (Liechtenstein)30AS 211493 testsblocked
213230 (HETZNER-CLOUD2-AS)usa (United States)30AS 213230 testsblocked
201019 (P4NET_POZ)pol (Poland)40AS 201019 testsblocked
204471ita (Italy)40AS 204471 testsblocked
272022bra (Brazil)40AS 272022 testsblocked
2552 (WUSTL-ASN)usa (United States)50AS 2552 testsblocked
31919 (BRMEMC)usa (United States)60AS 31919 testsblocked
5719 (SUNYSB)usa (United States)70AS 5719 testsblocked
266192bra (Brazil)72AS 266192 testsblocked
50411 (ITVMedia)pol (Poland)80AS 50411 testsblocked
55 (UPENN)usa (United States)81AS 55 testsblocked
62166 (SPADHAUSEN)ita (Italy)91AS 62166 testsblocked
25376 (NETNORTH-ASN)gbr (United Kingdom)101AS 25376 testsblocked
12876 (AS12876)nld (Netherlands)110AS 12876 testsblocked
397545 (AS-NSL-261)can (Canada)110AS 397545 testsblocked
263152bra (Brazil)113AS 263152 testsblocked
43192 (imedia-AS)irl (Ireland)124AS 43192 testsblocked
52210 (AsreTeleCoM-SP)can (Canada)131AS 52210 testsblocked
49855 (PLUTEX)deu (Germany)152AS 49855 testsblocked
14277 (GIGSTREEM)usa (United States)190AS 14277 testsblocked
3685 (BUFFALO-ASN)usa (United States)192AS 3685 testsblocked
12392 (ASBRUTELE)bel (Belgium)203AS 12392 testsblocked
33983 (ARTMOTION-AS)alb (Albania)208AS 33983 testsblocked
25424 (INEXT-CZ)cze (Czech Republic)213AS 25424 testsblocked
10750 (MARK-TWAIN)usa (United States)220AS 10750 testsblocked
46632 (SOUTHWEST-ARKANSAS-TELEPHONE-COOPERATIVE)usa (United States)264AS 46632 testsblocked
62523 (CIRBN-LLC)usa (United States)276AS 62523 testsblocked
8265 (FASTNET-BKB-ASN)ita (Italy)282AS 8265 testsblocked
15699 (AS_ADAM)esp (Spain)284AS 15699 testsblocked
8399 (SEWAN-FR)fra (France)300AS 8399 testsblocked
22898 (ATLINK)usa (United States)313AS 22898 testsblocked
19165 (WEBPASS)usa (United States)431AS 19165 testsblocked
200019 (AlexHost)mda (Moldova, Republic of)431AS 200019 testsblocked
1213 (HEANET)irl (Ireland)534AS 1213 testsblocked
21412 (CGATES-AS)ltu (Lithuania)601AS 21412 testsblocked
39603 (P4NET)pol (Poland)635AS 39603 testsblocked
8374 (PLUSNET)pol (Poland)6332AS 8374 testsblocked
19318 (IS-AS-1)usa (United States)752AS 19318 testsblocked
45267 (LIGHTWIRE-AS-AP)nzl (New Zealand)907AS 45267 testsblocked
201838 (ASN-COMMUNITYFIBRE)gbr (United Kingdom)980AS 201838 testsblocked
5466 (EIRCOM)irl (Ireland)9815AS 5466 testsblocked
13693 (NTS-ONLINE)usa (United States)11312AS 13693 testsblocked
46375 (AS-SONICTELECOM)usa (United States)11614AS 46375 testsblocked
8422 (NETCOLOGNE)deu (Germany)12232AS 8422 testsblocked
2018 (TENET-1)zaf (South Africa)1286AS 2018 testsblocked
9063 (SAARGATE-AS)deu (Germany)13626AS 9063 testsblocked
50266 (tmobile-thuis)nld (Netherlands)15723AS 50266 testsblocked
6713 (IAM-AS)mar (Morocco)17315AS 6713 testsblocked
39138 (RRBONE)deu (Germany)1829AS 39138 testsblocked
6128 (CABLE-NET-1)usa (United States)2192AS 6128 testsblocked
7992 (COGECOWAVE)can (Canada)24027AS 7992 testsblocked
46475 (LIMESTONENETWORKS)usa (United States)2637AS 46475 testsblocked
16276 (OVH)fra (France)28938AS 16276 testsblocked
14754ury (Uruguay)29966AS 14754 testsblocked
38235 (MEKONGNET-ADC-AS-AP)khm (Cambodia, Kingdom of)32029AS 38235 testsblocked
9500 (VODAFONE-TRANSIT-AS)nzl (New Zealand)32744AS 9500 testsblocked
12337 (NORIS-NETWORK)deu (Germany)33831AS 12337 testsblocked
11776 (ATLANTICBB-JOHNSTOWN)usa (United States)34733AS 11776 testsblocked
5769 (VIDEOTRON)can (Canada)35526AS 5769 testsblocked
19108 (SUDDENLINK-COMMUNICATIONS)usa (United States)41079AS 19108 testsblocked
25180 (EXPONENTIAL-E-AS)gbr (United Kingdom)42477AS 25180 testsblocked
30600 (AS-CMN)usa (United States)43160AS 30600 testsblocked
22047chl (Chile)4551AS 22047 testsblocked
45102 (CNNIC-ALIBABA-US-NET-AP)usa (United States)45511AS 45102 testsblocked
18747 (IFX18747)col (Colombia)46083AS 18747 testsblocked
13213 (UK2NET-AS)gbr (United Kingdom)4869AS 13213 testsblocked
15557 (LDCOMNET)fra (France)517101AS 15557 testsblocked
49981 (WorldStream)nld (Netherlands)75564AS 49981 testsblocked
56911 (ASN-WARIAN)irl (Ireland)84220AS 56911 testsblocked
8881 (VERSATEL)deu (Germany)899216AS 8881 testsblocked
31898 (ORACLE-BMC-31898)usa (United States)91122AS 31898 testsblocked
36352 (AS-COLOCROSSING)usa (United States)102324AS 36352 testsblocked
2860 (NOS_COMUNICACOES)prt (Portugal)109546AS 2860 testsblocked
10396 (COQUI-NET)pri (Puerto Rico)119244AS 10396 testsblocked
2519 (VECTANT)jpn (Japan)1231130AS 2519 testsblocked
36925 (ASMedi)mar (Morocco)123331AS 36925 testsblocked
4538 (ERX-CERNET-BKB)chn (China)127039AS 4538 testsblocked
43766 (MTC-KSA-AS)sau (Saudi Arabia)148827AS 43766 testsblocked
8926 (MOLDTELECOM-AS)mda (Moldova, Republic of)156857AS 8926 testsblocked
24940 (HETZNER-AS)fin (Finland)157669AS 24940 testsblocked
28343bra (Brazil)1584166AS 28343 testsblocked
46562 (PERFORMIVE)usa (United States)172745AS 46562 testsblocked
5650 (FRONTIER-FRTR)usa (United States)1806295AS 5650 testsblocked
1257 (SWIPNET)swe (Sweden)1815277AS 1257 testsblocked
133385 (TELENORMYANMAR-AS)mmr (Myanmar)189379AS 133385 testsblocked
12741 (AS-NETIA)pol (Poland)2104555AS 12741 testsblocked
23106bra (Brazil)2109418AS 23106 testsblocked
8708 (RCS-RDS)rou (Romania)2215405AS 8708 testsblocked
852 (ASN852)can (Canada)2441328AS 852 testsblocked
29802 (HVC-AS)usa (United States)255496AS 29802 testsblocked
53062bra (Brazil)2570628AS 53062 testsblocked
8151mex (Mexico)321886AS 8151 testsblocked
9829 (BSNL-NIB)ind (India)3513611AS 9829 testsblocked
60171 (AFRIX-AS)esp (Spain)4216344AS 60171 testsblocked
14259chl (Chile)5186247AS 14259 testsblocked
1680 (NV-ASN)isr (Israel)6253232AS 1680 testsblocked
8551 (BEZEQ-INTERNATIONAL-AS)isr (Israel)6323234AS 8551 testsblocked
9009 (M247)che (Switzerland)6781279AS 9009 testsblocked
3786 (LGDACOM)kor (South Korea)7405524AS 3786 testsblocked
32097 (WII)usa (United States)8036288AS 32097 testsblocked
577 (BACOM)can (Canada)9120809AS 577 testsblocked
2497 (IIJ)jpn (Japan)11297735AS 2497 testsblocked
4230bra (Brazil)118303416AS 4230 testsblocked
2516 (KDDI)jpn (Japan)11993653AS 2516 testsblocked
60068 (CDN77)ukr (Ukraine)16909921AS 60068 testsblocked
812 (ROGERS-COMMUNICATIONS)can (Canada)199671079AS 812 testsblocked
4837 (CHINA169-Backbone)chn (China)24262850AS 4837 testsblocked
4134 (CHINANET-BACKBONE)chn (China)30955983AS 4134 testsblocked
7922 (COMCAST-7922)usa (United States)312622228AS 7922 testsblocked
33763 (Paratus-Telecom)ago (Angola)318341039AS 33763 testsblocked
3303 (SWISSCOM)che (Switzerland)360323816AS 3303 testsblocked
4657 (STARHUB-INTERNET)sgp (Singapore)409432310AS 4657 testsblocked
20473 (AS-CHOOPA)usa (United States)512474980AS 20473 testsblocked
4788 (TMNET-AS-AP)mys (Malaysia)1063089429AS 4788 testsblocked
4766 (KIXS-AS-KR)kor (South Korea)11804210502AS 4766 testsblocked
9498 (BBIL-AP)ind (India)17894320655AS 9498 testsblocked

Address Space Announcement History

The customer cone for 174 is too large for a prefix list to be useful.

Last Modified