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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
20691612025-11-27 08:51:25145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20669992025-11-23 14:14:25145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20669872025-11-23 13:31:18145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20669822025-11-23 13:08:09145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20669772025-11-23 12:55:00145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20639832025-11-18 07:51:04145.102.242.x/241103 (SURFNET-NL)nld (Netherlands)yesblockedblockednoneReport
20622082025-11-14 16:57:44145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20590542025-11-07 15:03:532001:610:1xx::/401103 (SURFNET-NL)nld (Netherlands)noblockedblocked/80Report
20536942025-10-26 11:13:51145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20477732025-10-16 09:50:23145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20437702025-10-09 08:42:50145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20437582025-10-09 08:27:44145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20419432025-10-06 08:12:56145.126.27.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20381822025-09-29 07:04:38145.126.27.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20379692025-09-28 20:26:20145.126.27.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/19Report
20379232025-09-28 17:33:19145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20378792025-09-28 15:39:22145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20359912025-09-25 08:41:48145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20321242025-09-18 08:38:36145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20278602025-09-10 20:22:51145.126.25.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20257442025-09-07 14:51:39145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20240562025-09-04 08:29:46145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20220792025-09-01 06:54:08145.126.28.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20200792025-08-28 07:35:52145.126.28.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20194952025-08-27 09:59:49145.107.35.x/241103 (SURFNET-NL)nld (Netherlands)nounknownunknownnoneReport
20194582025-08-27 08:32:14145.107.35.x/241103 (SURFNET-NL)nld (Netherlands)nounknownunknownnoneReport
20179332025-08-24 11:09:44145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20164122025-08-21 11:29:28145.126.99.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20146042025-08-18 10:39:56145.126.27.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20086872025-08-07 09:23:52145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
20035542025-07-29 13:31:08145.126.29.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
20027692025-07-28 09:25:19145.126.29.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19987852025-07-21 08:17:00145.126.31.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19969202025-07-17 11:41:39145.126.26.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19968582025-07-17 08:48:40145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19948442025-07-14 07:00:56145.126.25.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19923212025-07-09 11:49:10145.126.28.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19889922025-07-03 08:38:51145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19884232025-07-02 10:40:54145.126.28.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19842402025-06-25 07:49:22145.126.25.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19812162025-06-19 09:44:44145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19777952025-06-13 06:36:03145.126.24.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19772172025-06-12 11:18:23145.126.24.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19771612025-06-12 08:34:09145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19764102025-06-11 06:55:09145.126.24.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19763732025-06-11 04:55:26145.103.60.x/241103 (SURFNET-NL)nld (Netherlands)yesblockedblockednoneReport
19714882025-06-02 21:25:07145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19655242025-05-22 08:39:11145.103.249.x/241103 (SURFNET-NL)nld (Netherlands)yesrewrittenrewrittennoneReport
19651472025-05-21 17:56:24145.126.28.x/241103 (SURFNET-NL)nld (Netherlands)noblockedblocked/17Report
19641942025-05-20 07:46:20145.145.1.x/241103 (SURFNET-NL)nld (Netherlands)yesblockedblockednoneReport
19641862025-05-20 07:31:19145.145.1.x/241103 (SURFNET-NL)nld (Netherlands)yesblockedblockednoneReport
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

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