on-undervisning.dk
📜 DNS record history  ·  ← Current records
📜 Record History10 scans · 23 changes
Scanned AtChanges since previous scan
2026-09-01 14:44:06
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBLgAgACA7vYZanHA++EpkSDmYVe8RxTH8G7pwkcj/oN8vTSjoEgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBTAAgACCauk+cc3c7hdEYGHKp9jDfKiQxLE1kjlr+Bg+h14waEwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f
2026-08-28 17:22:38
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBTAAgACCauk+cc3c7hdEYGHKp9jDfKiQxLE1kjlr+Bg+h14waEwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBnAAgACARo7YnVSxc1Cwqzw6o7G5YA58hWmSYzleNfffnbFChcQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f
TLSA − _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 311 A6C267923B26A4A9617EDA73D8DB4FBCB0185D72F621B83B1D9076485A41A28D − _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 201 5F88694615E4C61686E106B84C3338C6720C535F60D36F61282ED15E1977DD44 − _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 311 C495D9E40F7E625BE22F83CC64305182AB0FE74232DE30DB8B218D09650CB0EA − _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 201 6EBFF927297A5B3AAF5EAE672252C36A5158473FA5BBF0E29508D5528358F83B − _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 311 133086C7B822371A4A3304F1661A7880B908D9DAE191E78259AFA22FEC2B4FC7 − _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 201 38D895F5105BC2545822C17A2444F4B0EA3D298D2C15A38296AA7295A3D85CE9
SOA + serial 2413346647 − serial 2412037462
2026-08-13 12:50:57
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBnAAgACARo7YnVSxc1Cwqzw6o7G5YA58hWmSYzleNfffnbFChcQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBfQAgACATCz+hHsHxTByYJH93iebkwe6FSs5P6ov01mgMuv3SfwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f
SOA + serial 2412037462 − serial 2410950157
2026-08-02 14:50:05
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBfQAgACATCz+hHsHxTByYJH93iebkwe6FSs5P6ov01mgMuv3SfwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBQgAgACDP2iJ5zXniBoICyNi4hcxUdO6mph0dWRKAmcSCLYEINQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f
TLSA + _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 201 EA7A25255D111FC3CE4CB8FABE3ADF9C27BBE6DB203F955066BAB4C5A71F3D08 + _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 311 54883CC5F1849331E6BF5002C3129D2020BFB60937E7389B363BB01B91F3D096
SOA + serial 2410950157 − serial 2409963858
2026-07-20 11:59:07
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBQgAgACDP2iJ5zXniBoICyNi4hcxUdO6mph0dWRKAmcSCLYEINQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBBgAgACBXgYirNowYMmEnKve7Kj1hLWbkjM2tkd5TVPnwOF+cAAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f
SOA + serial 2409963858 − serial 2409102951
2026-07-10 13:15:16
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBBgAgACBXgYirNowYMmEnKve7Kj1hLWbkjM2tkd5TVPnwOF+cAAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBxAAgACB6v9RocY4IYWF5yo2WCtsfddBNdEBmztXt4DCEi9tKRAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f
TLSA + _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 311 803F7447CC75B208DBCA042346F5D8DF3F542F1D062F4C90A7EC9F2C86211C1B + _25._tcp.onundervisning-dk0e.o-v1.mx.microsoft 201 C1AD7778796D20BCA65C889A2655021156528BB62FF5FA43E1B8E5A83E3D2EAA
SOA + serial 2409102951 − serial 2408247295
2026-07-02 20:05:27
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBxAAgACB6v9RocY4IYWF5yo2WCtsfddBNdEBmztXt4DCEi9tKRAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBSAAgACDleo1mRmw8wQ6xTVYntOqKsfUVgN4FFlgrRmsTvz98ZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f
SOA + serial 2408247295 − serial 2407938483
2026-06-26 14:23:03
A + 104.21.41.132 + 172.67.147.95 − 108.157.229.112 − 108.157.229.118 − 108.157.229.31 − 108.157.229.80
AAAA + 2606:4700:3035::6815:2984 + 2606:4700:3037::ac43:935f − 2600:9000:2395:1c00:17:6eef:c1c0:93a1 − 2600:9000:2395:1e00:17:6eef:c1c0:93a1 − 2600:9000:2395:4600:17:6eef:c1c0:93a1 − 2600:9000:2395:4800:17:6eef:c1c0:93a1 − 2600:9000:2395:9800:17:6eef:c1c0:93a1 − 2600:9000:2395:a00:17:6eef:c1c0:93a1 − 2600:9000:2395:e600:17:6eef:c1c0:93a1 − 2600:9000:2395:fe00:17:6eef:c1c0:93a1
TXT + v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:_spf.relay.mailprotect.be -all − v=spf1 include:_spf.google.com include:spf.protection.outlook.com -all
HTTPS + 1 . alpn="h3,h2" ipv4hint=104.21.41.132,172.67.147.95 ech=AEX+DQBBSAAgACDleo1mRmw8wQ6xTVYntOqKsfUVgN4FFlgrRmsTvz98ZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2984,2606:4700:3037::ac43:935f − 1 . alpn="h2"
SOA + serial 2407938483 − serial 2407691671
2026-06-24 01:28:44
AAAA + 2600:9000:2395:1c00:17:6eef:c1c0:93a1 + 2600:9000:2395:1e00:17:6eef:c1c0:93a1 + 2600:9000:2395:4600:17:6eef:c1c0:93a1 + 2600:9000:2395:4800:17:6eef:c1c0:93a1 + 2600:9000:2395:a00:17:6eef:c1c0:93a1 + 2600:9000:2395:e600:17:6eef:c1c0:93a1 + 2600:9000:2395:fe00:17:6eef:c1c0:93a1 − 2600:9000:2395:0:17:6eef:c1c0:93a1 − 2600:9000:2395:2e00:17:6eef:c1c0:93a1 − 2600:9000:2395:3e00:17:6eef:c1c0:93a1 − 2600:9000:2395:4400:17:6eef:c1c0:93a1 − 2600:9000:2395:5e00:17:6eef:c1c0:93a1 − 2600:9000:2395:9a00:17:6eef:c1c0:93a1 − 2600:9000:2395:a400:17:6eef:c1c0:93a1
SOA + serial 2407691671 − serial 2405854169
2026-06-18 03:05:27 baseline 2 NS · 4 A · 1 MX · 8 AAAA · 4 TXT · 1 HTTPS · 6 TLSA · serial 2405854169 · DMARC · TLSRPT · DNSSEC secure · MTA-STS testing

Each row compares a scan to the one before it. “baseline” is the oldest scan in the window (last 10 scans). Click a timestamp to view that full snapshot.

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