df-opgaver.dk

Records from scan: 2026-10-12 17:03:58 · 584ms total · last checked 2026-10-24 19:02 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

df-opgaver.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 6 August 2026 (WHOIS) and first appeared in the .dk zone on 7 August 2026. Mail is handled by mxa.eu.mailgun.org, mxb.eu.mailgun.org. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 34ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

2 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mxa.eu.mailgun.org	34.111.130.244	244.130.111.34.bc.googleusercontent.com	AS396982 Google LLC
10	3600s	mxb.eu.mailgun.org	34.111.130.244	244.130.111.34.bc.googleusercontent.com	AS396982 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 120ms

TXT Record
v=spf1 include:mailgun.org ~all

✉️ SPF#

Policy	Record (df-opgaver.dk)
~all (soft fail)	v=spf1 include:mailgun.org ~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#

checked 2026-10-12 17:03:58

www	NXDOMAIN
www vs bare domain	Neither resolves df-opgaver.dk: no address www.df-opgaver.dk: no address
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
s1	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 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#

59ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

26ms

Field	Value
Serial	2026101200
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-04 04:14:10

Field	Value
Registrar	Simply.com A/S
Registered	2026-08-06
Expires	2027-08-05 (284d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

31ms

39ms

AAAA

35ms

TXT

120ms

CAA

28ms

HTTPS

47ms

TLSA

231ms

SOA

26ms

MTA-STS

46ms

DNSSEC

59ms

SRV

53ms

Total

584ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 17:03:58 shown	584ms	3 NS 0 A 2 MX	🔒 Secure
2026-10-09 11:02:59	479ms	3 NS 0 A 2 MX	🔒 Secure
2026-10-04 03:45:00	669ms	3 NS 0 A 2 MX	🔒 Secure
2026-09-24 00:58:52	501ms	3 NS 0 A 2 MX	🔒 Secure
2026-09-06 17:55:36	884ms	3 NS 0 A 2 MX	🔒 Secure
2026-09-01 15:36:57	568ms	3 NS 0 A 2 MX	🔒 Secure
2026-08-07 09:00:00	848ms	3 NS 0 A 2 MX	🔒 Secure