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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
21347012026-03-25 11:47:262a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21339632026-03-24 05:39:182a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21314162026-03-19 11:05:242a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21308302026-03-18 06:24:512a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21277302026-03-12 11:21:412a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21199752026-02-26 05:26:352a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21188572026-02-24 06:06:582a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21178652026-02-22 14:53:562a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21150722026-02-17 18:27:142a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21111572026-02-11 06:03:112a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport
21070752026-02-04 12:30:092a00:102a:40xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)nounknownunknownnoneReport

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