instructo.dk

📜 Historical scan 2026-08-10 19:15:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

instructo.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 28 December 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 116.203.59.109 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by aspmx1.migadu.com, aspmx2.migadu.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 51ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
116.203.59.109	3600s	static.109.59.203.116.clients.your-server.de	AS24940	Hetzner Online GmbH	116.202.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records#

2 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	aspmx1.migadu.com	135.125.171.180 135.125.222.87 2001:41d0:303:648a::1 2001:41d0:700:19b4::1 2001:41d0:700:1a57::1 51.38.57.138	ns3160119.ip-135-125-171.eu ns3160230.ip-135-125-222.eu — — — mizu0.migadu.com	AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS
20	3600s	aspmx2.migadu.com	135.125.171.180 135.125.222.87 2001:41d0:303:648a::1 2001:41d0:700:19b4::1 2001:41d0:700:1a57::1 51.38.57.138	ns3160119.ip-135-125-171.eu ns3160230.ip-135-125-222.eu — — — mizu0.migadu.com	AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	116.203.59.109
🔶 Autoconfig	autoconfig.migadu.com → 141.94.97.141

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

2 records 319ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	1	443	autodiscover.migadu.com
_imaps._tcp	0	1	993	imap.migadu.com

📝 TXT Records#

2 records 179ms

TXT Record
hosted-email-verify=8xuypm8s
v=spf1 include:spf.migadu.com -all

✉️ SPF#

Policy	Record (instructo.dk)
-all (hard fail)	v=spf1 include:spf.migadu.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-11 00:19:05

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Different networks instructo.dk: 116.203.59.109 (AS24940) www.instructo.dk: 46.30.211.38 (AS51468) (all like this)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

90ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2026081001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-09 15:40:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2024-12-28
Expires	2026-12-27 (62d)

📋 WHOIS#

⏱️ Lookup Timing#

51ms

37ms

41ms

AAAA

41ms

TXT

179ms

CAA

59ms

HTTPS

58ms

TLSA

432ms

SOA

0ms

MTA-STS

78ms

DNSSEC

90ms

SRV

319ms

Total

1962ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 00:19:05	2946ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-10 14:56:42	1451ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-10 19:15:06 shown	1962ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-13 03:20:35	10206ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-19 09:57:13	1383ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-17 15:14:58	331ms	0 NS 0 A 0 MX	❓ Unknown