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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
19813602025-06-19 15:55:212600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19813272025-06-19 14:23:092600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19808012025-06-18 17:15:282600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19807522025-06-18 15:50:232600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19806842025-06-18 14:14:422600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19806682025-06-18 13:54:342600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19806092025-06-18 12:26:062600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19802412025-06-17 19:57:052600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19801912025-06-17 18:33:072600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
19801372025-06-17 17:16:532600:1003:b4xx::/406167 (CELLCO-PART)usa (United States)noblockedblocked/64Report
2760132017-07-18 10:32:262600:1003:b4xx::/4022394 (CELLCO)usa (United States)noblockedblocked/64Report
1065452016-12-07 19:23:432600:1003:b4xx::/4022394 (CELLCO)usa (United States)noblockedblockednoneReport

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