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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
21451322026-04-14 07:56:52240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21451262026-04-14 07:34:11240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21447682026-04-13 14:34:50240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21417662026-04-07 16:43:30240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21365462026-03-28 19:34:14240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21365322026-03-28 19:11:38240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21285682026-03-13 20:28:20240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21247252026-03-06 19:20:45240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21209382026-02-27 17:42:57240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21163392026-02-19 18:12:40240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
21079532026-02-05 15:19:15240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
20988342026-01-20 21:16:25240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
20937122026-01-12 09:04:52240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
20895832026-01-04 22:57:06240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
20895712026-01-04 22:14:25240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
20895602026-01-04 21:51:50240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
20895552026-01-04 21:39:12240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport
20858782025-12-27 20:20:29240b:4009:2xx::/4045102 (CNNIC-ALIBABA-US-NET-AP)sgp (Singapore)yesblockedblockednoneReport

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