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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
20441182025-10-09 20:05:33172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
20344312025-09-22 19:14:33172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
20171682025-08-22 17:11:44172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
19780712025-06-13 17:05:03172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
19780562025-06-13 16:34:30172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
19347992025-03-27 16:43:03172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
18935732025-01-14 20:09:12172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
18753862024-12-10 01:57:38172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesblockedblockednoneReport
18611422024-11-14 17:00:34172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
18561142024-11-05 17:20:21172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
18504422024-10-25 19:42:38172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
18503722024-10-25 17:03:52172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
18486072024-10-22 18:33:53172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
18151682024-08-19 15:50:51172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport
17956212024-07-12 09:11:11172.59.121.x/2421928 (T-MOBILE-AS21928)usa (United States)yesrewrittenrewrittennoneReport

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