opt.dk
📜 DNS record history  ·  ← Current records
📜 Record History7 scans · 13 changes
Scanned AtChanges since previous scan
2026-08-21 08:28:02
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBbwAgACCAaeV+QS5p5xbXEQGxi8tkUvu8MtGmPvK64VRaUALPcQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:158a,2606:4700:3037::ac43:c718 − 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBygAgACBK8tLdq4f+PQp7nMSdiRibGET5cxkGTrV6v3CkWT5gBAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:158a,2606:4700:3037::ac43:c718
SOA + serial 2412700009 − serial 2411037894
2026-08-01 11:27:05
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBygAgACBK8tLdq4f+PQp7nMSdiRibGET5cxkGTrV6v3CkWT5gBAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:158a,2606:4700:3037::ac43:c718 − 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBaQAgACDwMJ59ZS2jjwPFt3OMFEHNuX6EjddLsIzNZ+Y5GibxFwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:158a,2606:4700:3037::ac43:c718
SOA + serial 2411037894 − serial 2410626408
2026-07-27 13:09:12
AAAA + 2606:4700:3033::6815:158a + 2606:4700:3037::ac43:c718 − 2606:4700:3034::6815:158a − 2606:4700:3034::ac43:c718
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBaQAgACDwMJ59ZS2jjwPFt3OMFEHNuX6EjddLsIzNZ+Y5GibxFwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:158a,2606:4700:3037::ac43:c718 − 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBagAgACBUUNKbhIpdQ3Gy7DXSzIViCJH6Mfv2EewD2V/p2pW+JwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:158a,2606:4700:3034::ac43:c718
SOA + serial 2410626408 − serial 2409173271
2026-07-11 05:43:49
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBagAgACBUUNKbhIpdQ3Gy7DXSzIViCJH6Mfv2EewD2V/p2pW+JwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:158a,2606:4700:3034::ac43:c718 − 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBiAAgACA/oRcaZOhEZJYWpswm2UeaZOkX+KTIhr16YQ8msmOqWAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:158a,2606:4700:3034::ac43:c718
SOA + serial 2409173271 − serial 2408552805
2026-07-03 19:51:10
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBiAAgACA/oRcaZOhEZJYWpswm2UeaZOkX+KTIhr16YQ8msmOqWAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:158a,2606:4700:3034::ac43:c718 − 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBnAAgACDUENXMOhr+XAQw4e21dSpuxvGopCER3M4zYCS2BqH3DwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:158a,2606:4700:3034::ac43:c718
SOA + serial 2408552805 − serial 2406479204
2026-07-02 07:20:51
MX + 0 .
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBBnAAgACDUENXMOhr+XAQw4e21dSpuxvGopCER3M4zYCS2BqH3DwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:158a,2606:4700:3034::ac43:c718 − 1 . alpn="h3,h2" ipv4hint=104.21.21.138,172.67.199.24 ech=AEX+DQBB5AAgACAp9izuzZ9Qy/F0fdNQl7lSpSP5fClpvP6OEJ8Riw31bwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:158a,2606:4700:3034::ac43:c718
2026-06-18 03:52:28 baseline 2 NS · 2 A · 2 AAAA · 1 HTTPS · serial 2406479204 · DNSSEC insecure

Each row compares a scan to the one before it. “baseline” is the oldest scan in the window (last 7 scans). Click a timestamp to view that full snapshot.

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