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Recent tests

Result filters: AS numbers or (partial) names: Country codes: Only show non-remediated spoofing
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.

SessionTimestamp (UTC)Client IP BlockASNCountryNATOutbound
Private
Status
Outbound
Routable
Status
Adj Spoof
Prefix Len
Results
19612212025-05-15 06:43:42145.126.28.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19590802025-05-12 08:58:45145.126.109.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19555302025-05-06 09:22:43145.126.108.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19552532025-05-05 18:26:37145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19518832025-04-29 08:06:37145.126.109.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19479802025-04-22 06:58:35145.126.105.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19462742025-04-18 08:41:11145.126.96.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19441572025-04-14 10:11:28145.126.35.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19441562025-04-14 10:08:35145.126.108.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19433992025-04-12 15:23:41145.126.106.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19422492025-04-10 08:35:32145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19406752025-04-07 13:29:46145.126.99.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19406252025-04-07 12:17:20145.126.97.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19405372025-04-07 09:03:34145.126.36.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19405362025-04-07 09:00:33145.126.108.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19371582025-04-01 06:07:51145.126.104.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblockednoneReport
19366122025-03-31 07:55:39145.126.39.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19346132025-03-27 12:00:44145.126.34.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19345462025-03-27 09:47:39145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19345022025-03-27 07:53:17145.126.109.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19334332025-03-25 12:26:01145.126.108.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19334132025-03-25 11:55:48145.126.108.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19326862025-03-24 07:23:40145.126.110.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19311422025-03-20 19:04:37145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19311332025-03-20 18:39:45145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19308762025-03-20 10:29:33145.126.34.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19308092025-03-20 07:30:27145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19307622025-03-20 05:31:42145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19305192025-03-19 16:52:21145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19296022025-03-18 09:19:39145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19295992025-03-18 09:01:33145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19295772025-03-18 08:07:35145.126.107.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19268272025-03-13 09:43:08145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19189022025-02-28 08:42:15145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19169742025-02-25 11:24:34145.90.228.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblockednoneReport
19169742025-02-25 11:24:342001:610:4xx::/401103 (SURFNET-NL)nld (Netherlands)noblockedblockednoneReport
19158382025-02-23 15:45:23145.90.228.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblockednoneReport
19158382025-02-23 15:45:232001:610:4xx::/401103 (SURFNET-NL)nld (Netherlands)noblockedblockednoneReport
19140412025-02-20 09:27:53145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19110552025-02-14 21:45:30143.121.239.x/241103 (SURFNET-NL)nld (Netherlands)yesunknownunknownnoneReport
19079722025-02-09 12:15:38145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19023002025-01-30 10:44:50145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18984802025-01-23 09:37:11145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18888162025-01-05 10:22:48145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18855482024-12-29 10:27:56145.90.231.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblockednoneReport
18855482024-12-29 10:27:562001:610:4xx::/401103 (SURFNET-NL)nld (Netherlands)noblockedblockednoneReport
18806532024-12-19 10:51:28145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18754782024-12-10 08:04:41145.103.245.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18745782024-12-08 16:22:53145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18745242024-12-08 13:30:56145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18738342024-12-07 04:49:10145.90.206.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/19Report
18705412024-12-01 12:24:04145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18687802024-11-28 09:32:14145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18665102024-11-24 11:17:03145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18609352024-11-14 10:31:36145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18570402024-11-07 09:16:29145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18516062024-10-28 21:33:30145.100.74.x/241103 (SURFNET-NL)nld (Netherlands)yesblockedblockednoneReport
18473382024-10-20 13:24:09145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18435592024-10-13 12:16:57145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18419952024-10-10 07:07:42145.33.101.x/241103 (SURFNET-NL)nld (Netherlands)yesunknownunknownnoneReport
18399042024-10-06 11:09:56145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18365592024-09-30 07:12:11145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18325502024-09-22 10:13:34145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18289962024-09-15 08:50:48145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18274972024-09-12 10:05:29145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18274612024-09-12 08:34:08145.33.101.x/241103 (SURFNET-NL)nld (Netherlands)yesunknownunknownnoneReport
18237512024-09-05 08:42:23145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18216402024-09-01 13:40:43145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18181282024-08-25 12:33:47145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18181032024-08-25 11:09:59145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18161802024-08-21 10:23:04145.103.245.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18144052024-08-17 19:17:22145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18142252024-08-17 09:06:14145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18119702024-08-13 08:18:39145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18066492024-08-02 11:00:53145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
18065732024-08-02 07:33:49145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17927352024-07-07 09:10:46145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17873052024-06-27 08:40:40145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17810152024-06-16 09:16:12145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17793492024-06-13 09:00:10145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17754372024-06-06 07:53:09145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17693122024-05-26 08:16:32145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17677622024-05-23 09:24:26145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17641592024-05-16 08:17:23145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17562482024-04-30 07:41:35145.103.245.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17562332024-04-30 06:31:20145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17536262024-04-25 09:09:06145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17536152024-04-25 08:46:52145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17536122024-04-25 08:34:39145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17466842024-04-11 09:31:25145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17430622024-04-04 08:15:55145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17377842024-03-24 11:24:00145.103.245.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17363062024-03-21 10:41:56145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17329162024-03-14 09:35:29145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17273032024-03-03 10:06:09145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17258532024-02-29 09:37:17145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17210492024-02-20 08:17:46145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17210152024-02-20 06:27:17145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17168752024-02-11 09:54:23145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17158692024-02-09 07:32:25145.33.101.x/241103 (SURFNET-NL)nld (Netherlands)yesunknownunknownnoneReport
17154362024-02-08 11:19:41145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17117452024-02-01 09:12:27145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
17111342024-01-31 07:32:48145.33.121.x/241103 (SURFNET-NL)nld (Netherlands)yesunknownunknownnoneReport

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