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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
20656032025-11-20 23:37:0283.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport
20617982025-11-13 23:37:0283.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport
20563612025-10-30 23:37:0383.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport
20274692025-09-10 10:22:0183.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport
20234552025-09-03 10:22:0283.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport
19116112025-02-16 02:57:0283.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport
19077622025-02-09 02:57:0283.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport
17891732024-06-30 22:42:0283.37.20.x/243352 (Telefonica_de_Espana)esp (Spain)norewrittenrewrittennoneReport

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