effective-learning.dk
📜 DNS record history  ·  ← Current records
📜 Record History11 scans · 13 changes
Scanned AtChanges since previous scan
2026-08-28 13:13:57
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBjQAgACBSh8QW+XqlJXROM9FqAwq4DhVtV7x48NVL/eUjcZ0oNAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBB9AAgACDGsaM394fQZDa41e7Pk5XsMeXXi0zLY40wG+6T/TjyIQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123
SOA + serial 2413371039 − serial 2413072363
2026-08-24 20:03:14
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBB9AAgACDGsaM394fQZDa41e7Pk5XsMeXXi0zLY40wG+6T/TjyIQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBagAgACCLP10npn0ypKFsPWXDI8chfzQVkv7JjWV3CplztS/rcwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123
SOA + serial 2413072363 − serial 2411337186
2026-08-08 07:22:15
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBagAgACCLP10npn0ypKFsPWXDI8chfzQVkv7JjWV3CplztS/rcwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBvwAgACB7CMm4HxtHZFToA9TXDQ2wqh16PzdaUEQbWq0qloFLeAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123
SOA + serial 2411337186 − serial 2409223831
2026-07-13 05:50:18
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBvwAgACB7CMm4HxtHZFToA9TXDQ2wqh16PzdaUEQbWq0qloFLeAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBJAAgACBxyjJKUEGqmY09i+R1UwGFIrfU2dMiq59q5mruEg8DNwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123
SOA + serial 2409223831 − serial 2407150229
2026-06-24 21:28:51
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBJAAgACBxyjJKUEGqmY09i+R1UwGFIrfU2dMiq59q5mruEg8DNwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBByQAgACChqGZO6KAWkDm1lwL4B1sqyWvycCRhl8micMlBdSuNUwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123
2026-06-24 11:42:14
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBByQAgACChqGZO6KAWkDm1lwL4B1sqyWvycCRhl8micMlBdSuNUwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBjQAgACDLcc0IVU47ovwQ8f0u0keIUrvqMVxNDz7J9ttgklC2AQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123
2026-06-19 23:18:07
AAAA + 2606:4700:3030::6815:9af + 2606:4700:3037::ac43:a123 − 2606:4700:3031::6815:9af − 2606:4700:3035::ac43:a123
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBjQAgACDLcc0IVU47ovwQ8f0u0keIUrvqMVxNDz7J9ttgklC2AQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9af,2606:4700:3037::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBXgAgACBk3IkpEn8VmeTeqwAXwjKHnHDe2nNyrlKhzDn33dKfVQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:9af,2606:4700:3035::ac43:a123
2026-06-17 06:16:05
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBXgAgACBk3IkpEn8VmeTeqwAXwjKHnHDe2nNyrlKhzDn33dKfVQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:9af,2606:4700:3035::ac43:a123 − 1 . alpn="h3,h2" ipv4hint=104.21.9.175,172.67.161.35 ech=AEX+DQBBJwAgACBdyL6ohvLUVHyP5QrQOPMNwhUaSEvijFQOPei6OLPPJwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:9af,2606:4700:3035::ac43:a123
2026-06-17 06:06:03 no changes
2026-06-17 06:02:57 no changes
2026-06-17 06:00:39 baseline 2 NS · 2 A · 2 AAAA · 1 HTTPS · serial 2407150229 · DNSSEC insecure

Each row compares a scan to the one before it. “baseline” is the oldest scan in the window (last 11 scans). Click a timestamp to view that full snapshot.

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