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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
3050532017-08-28 07:39:1494.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
3050472017-08-28 07:28:4094.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
3050102017-08-28 05:25:4077.93.192.x/2424971 (MASTER-AS)cze (Czech Republic)yesrewrittenrewrittennoneReport
3049142017-08-28 00:49:3794.112.144.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
3047522017-08-27 15:54:3378.41.22.x/2443413 (ASNEW)cze (Czech Republic)yesunknownunknownnoneReport
3047342017-08-27 15:00:5078.108.102.x/248251 (NFX_ZSPO)cze (Czech Republic)yesblockedblockednoneReport
3047072017-08-27 14:01:5894.112.144.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
3046692017-08-27 12:27:4794.112.144.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
3046482017-08-27 11:50:2994.112.144.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
3045942017-08-27 08:56:1178.108.102.x/248251 (NFX_ZSPO)cze (Czech Republic)yesblockedblockednoneReport
3043492017-08-26 20:57:5978.108.102.x/248251 (NFX_ZSPO)cze (Czech Republic)yesblockedblockednoneReport
3033562017-08-25 07:10:0694.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
3029432017-08-24 16:34:2779.98.78.x/2444002 (SYS-DATACOM)cze (Czech Republic)yesrewrittenblocked/21Report
3029432017-08-24 16:34:272a02:970:ffxx::/4044002 (SYS-DATACOM)cze (Czech Republic)noreceivedreceived/16Report
3027632017-08-24 12:00:3094.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
3026662017-08-24 08:32:1086.49.57.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
3023232017-08-23 18:40:4094.112.144.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
3021022017-08-23 11:59:48212.111.9.x/2425424 (INEXT-CZ)cze (Czech Republic)yesrewrittenrewrittennoneReport
3020992017-08-23 11:52:3983.208.252.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesrewrittenrewrittennoneReport
3020502017-08-23 09:56:2294.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
3020412017-08-23 09:43:1294.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
3020312017-08-23 09:06:2794.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
3019482017-08-23 05:59:2178.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
3015822017-08-22 16:14:0089.103.145.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
3015102017-08-22 14:21:1037.188.241.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesblockedblockednoneReport
3010882017-08-21 20:36:2877.234.40.x/24198605 (AVAST-AS-DC)cze (Czech Republic)yesunknownunknownnoneReport
3009452017-08-21 15:30:5389.190.54.x/2412570 (ITSELF)cze (Czech Republic)yesblockedblocked/21Report
3008422017-08-21 12:37:49212.111.9.x/2425424 (INEXT-CZ)cze (Czech Republic)yesrewrittenrewrittennoneReport
3004372017-08-20 18:36:2178.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2996252017-08-19 04:08:3562.240.181.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2993072017-08-18 15:51:5578.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2990332017-08-18 06:19:1779.98.78.x/2444002 (SYS-DATACOM)cze (Czech Republic)yesrewrittenblocked/21Report
2990332017-08-18 06:19:172a02:970:ffxx::/4044002 (SYS-DATACOM)cze (Czech Republic)noreceivedreceived/16Report
2987472017-08-17 18:22:4351.254.165.x/2416276 (OVH)cze (Czech Republic)nounknownunknownnoneReport
2981142017-08-16 19:51:0994.112.144.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2978112017-08-16 09:59:1794.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2977262017-08-16 06:56:4094.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2970742017-08-15 07:15:0194.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2965772017-08-14 11:31:09212.111.9.x/2425424 (INEXT-CZ)cze (Czech Republic)yesrewrittenrewrittennoneReport
2965672017-08-14 10:47:4878.108.102.x/248251 (NFX_ZSPO)cze (Czech Republic)yesblockedblockednoneReport
2960622017-08-13 12:30:00185.41.141.x/24174 (COGENT-174)cze (Czech Republic)yesblockedblockednoneReport
2956162017-08-12 15:01:16193.165.154.x/2430764 (PODA-AS)cze (Czech Republic)yesblockedblocked/16Report
2948752017-08-11 12:04:27212.111.9.x/2425424 (INEXT-CZ)cze (Czech Republic)yesrewrittenrewrittennoneReport
2948142017-08-11 09:46:1851.254.165.x/2416276 (OVH)cze (Czech Republic)nounknownunknownnoneReport
2946682017-08-11 05:00:2694.112.177.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2944032017-08-10 18:55:2978.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2943872017-08-10 18:40:5378.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2942642017-08-10 16:08:5879.98.78.x/2444002 (SYS-DATACOM)cze (Czech Republic)yesrewrittenblocked/21Report
2942642017-08-10 16:08:582a02:970:ffxx::/4044002 (SYS-DATACOM)cze (Czech Republic)noreceivedreceived/16Report
2939622017-08-10 07:23:2194.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2931252017-08-09 08:42:19185.41.141.x/24174 (COGENT-174)cze (Czech Republic)yesblockedblockednoneReport
2924362017-08-08 13:41:0494.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2923122017-08-08 09:28:3494.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2915102017-08-07 10:04:0194.112.144.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2914632017-08-07 08:40:3094.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesblockedblockednoneReport
2909202017-08-06 11:07:5589.103.145.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2907862017-08-06 06:11:0994.112.177.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2902742017-08-05 08:34:3686.49.57.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2902672017-08-05 08:23:5837.188.227.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesblockedblockednoneReport
2902642017-08-05 08:19:2237.188.227.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesblockedblockednoneReport
2897072017-08-04 13:25:26194.228.20.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesrewrittenrewrittennoneReport
2897072017-08-04 13:25:262a00:1028:83xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)noblockedblocked/64Report
2896482017-08-04 11:20:4583.208.252.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesrewrittenrewrittennoneReport
2896022017-08-04 08:24:0286.49.57.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2895872017-08-04 07:51:3589.190.54.x/2412570 (ITSELF)cze (Czech Republic)yesblockedblocked/21Report
2890622017-08-03 14:37:0584.42.249.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2890212017-08-03 13:48:5978.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2888792017-08-03 10:03:3778.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2880162017-08-02 09:33:1994.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2879342017-08-02 07:23:1784.42.249.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2871952017-08-01 09:37:3994.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2871892017-08-01 09:27:5579.98.78.x/2444002 (SYS-DATACOM)cze (Czech Republic)yesrewrittenblocked/21Report
2871892017-08-01 09:27:552a02:970:ffxx::/4044002 (SYS-DATACOM)cze (Czech Republic)noreceivedreceived/16Report
2871372017-08-01 07:39:4394.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2867632017-07-31 19:18:0578.41.22.x/2443413 (ASNEW)cze (Czech Republic)yesunknownunknownnoneReport
2864242017-07-31 11:26:0186.49.3.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2863272017-07-31 08:49:3694.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2859772017-07-30 20:41:43185.41.141.x/24174 (COGENT-174)cze (Czech Republic)yesblockedblockednoneReport
2853482017-07-29 20:21:5694.112.177.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2843742017-07-28 12:29:3086.49.107.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2843512017-07-28 12:00:55194.228.20.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesrewrittenrewrittennoneReport
2843512017-07-28 12:00:552a00:1028:83xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)noblockedblockednoneReport
2836022017-07-27 15:23:1578.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2833322017-07-27 08:01:0294.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesblockedblockednoneReport
2824212017-07-26 08:19:08185.41.141.x/24174 (COGENT-174)cze (Czech Republic)yesblockedblockednoneReport
2818722017-07-25 15:42:5478.41.22.x/2443413 (ASNEW)cze (Czech Republic)yesunknownunknownnoneReport
2816182017-07-25 08:21:1479.98.78.x/2444002 (SYS-DATACOM)cze (Czech Republic)yesrewrittenblocked/21Report
2816182017-07-25 08:21:142a02:970:ffxx::/4044002 (SYS-DATACOM)cze (Czech Republic)noreceivedreceived/16Report
2816002017-07-25 07:41:2294.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2815872017-07-25 07:21:4394.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2815562017-07-25 06:32:5894.199.46.x/2448298 (GOVCZ)cze (Czech Republic)yesunknownunknownnoneReport
2811872017-07-24 18:59:4278.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2811302017-07-24 17:37:4978.45.198.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2808822017-07-24 11:27:0385.70.228.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesrewrittenrewrittennoneReport
2808142017-07-24 09:28:4086.49.3.x/246830 (LibertyGlobal)cze (Czech Republic)yesblockedblockednoneReport
2795052017-07-22 13:04:0794.112.177.x/246830 (LibertyGlobal)cze (Czech Republic)yesrewrittenrewrittennoneReport
2793372017-07-22 06:35:3377.78.82.x/2415685 (CASABLANCA-AS)cze (Czech Republic)yesblockedblockednoneReport
2789352017-07-21 15:46:0782.113.52.x/2429208 (DIALTELECOM-AS)cze (Czech Republic)yesrewrittenrewrittennoneReport
2789352017-07-21 15:46:072001:4de8:b0xx::/4029208 (DIALTELECOM-AS)cze (Czech Republic)yesrewrittenrewrittennoneReport
2788932017-07-21 14:33:4051.254.165.x/2416276 (OVH)cze (Czech Republic)nounknownunknownnoneReport
2788562017-07-21 13:31:1662.168.35.x/245588 (GTSCE)cze (Czech Republic)yesunknownunknownnoneReport
2788542017-07-21 13:31:0162.168.35.x/245588 (GTSCE)cze (Czech Republic)yesunknownunknownnoneReport
2788492017-07-21 13:26:1262.168.35.x/245588 (GTSCE)cze (Czech Republic)yesunknownunknownnoneReport
2787742017-07-21 11:22:4593.185.11.x/2456456 (C2NET)cze (Czech Republic)yesunknownunknownnoneReport
2787362017-07-21 10:34:43194.228.20.x/245610 (O2-CZECH-REPUBLIC)cze (Czech Republic)yesrewrittenrewrittennoneReport
2787362017-07-21 10:34:432a00:1028:83xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)noblockedblocked/64Report
2782672017-07-20 20:28:5462.168.35.x/245588 (GTSCE)cze (Czech Republic)yesunknownunknownnoneReport
2781722017-07-20 18:04:5751.254.165.x/2416276 (OVH)cze (Czech Republic)nounknownunknownnoneReport
2779262017-07-20 13:34:272a00:1028:83xx::/405610 (O2-CZECH-REPUBLIC)cze (Czech Republic)noblockedblocked/64Report

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