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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
20921082026-01-08 19:39:445.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20882892026-01-01 18:31:465.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20849952025-12-25 17:23:495.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noreceivedreceived/8Report
20814672025-12-18 16:15:505.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noreceivedreceived/8Report
20814402025-12-18 15:32:525.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noreceivedreceived/8Report
20814172025-12-18 15:09:555.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noreceivedreceived/8Report
20814022025-12-18 14:56:585.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noreceivedreceived/8Report
20771832025-12-11 13:49:045.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noreceivedreceived/8Report
20693382025-11-27 15:00:265.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20653982025-11-20 14:53:195.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20653662025-11-20 13:52:325.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20381072025-09-29 03:28:175.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20339922025-09-22 02:20:145.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20299482025-09-15 01:12:185.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20283982025-09-11 15:17:385.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report
20283912025-09-11 15:14:415.59.249.x/24212271 (C1VFIBER-NET)cze (Czech Republic)noblockedreceived/8Report

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