erik-serup.dk

Records from scan: 2026-09-26 12:01:48 · 914ms total · last checked 2026-10-17 12:13 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

erik-serup.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 November 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.241.88 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by erikserup-dk01b.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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#

2 records 33ms

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 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.241.88	3600s	webcluster1.wordpresspod2-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	erikserup-dk01b.mail.protection.outlook.com	2a01:111:f403:ca09::20 2a01:111:f403:ca09::a 2a01:111:f403:ca21::c 2a01:111:f403:ca3c::8 52.101.209.31 52.101.68.21 52.101.68.8 52.101.91.159	mail-as8pr05cu00400.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-matpr04cu00207.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40
🔶 Autoconfig	77.111.241.88

🔷 AAAA Records (IPv6)#

1 records 50ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:104:c0:8dc2:183f:2f6a	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 193ms

TXT Record
google-site-verification=P0q4mNNIa8FTcujB1SfRnyVOn6ss9x9VtzI0T-SS7y0
MS=ms92796266
v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com include:sendgrid.net include:_custspf.one.com -all

✉️ SPF#

Policy	Record (erik-serup.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com include:sendgrid.net include:_custspf.one.com -all

📨 DMARC#

Policy	Record (_dmarc.erik-serup.dk)
p=none (monitor only)	v=DMARC1; p=none; pct=100; rua=mailto:re+uhemjy91vxi@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 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 04:23:45

www	77.111.241.88 2a02:2350:5:104:c0:8dc2:183f:2f6a (AS51468) (address records, no CNAME)
www vs bare domain	Same network erik-serup.dk: 77.111.241.88 2a02:2350:5:104:c0:8dc2:183f:2f6a (AS51468) www.erik-serup.dk: 77.111.241.88 2a02:2350:5:104:c0:8dc2:183f:2f6a (AS51468)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-erikserup-dk01b._domainkey.erikserup.onmicrosoft.com	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: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

81ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026083105
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 2026-10-16 15:33:16

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-11-08
Expires	2026-11-30 (43d)

🔗 Same registrant#

4 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
boerne-party.dk	Punktum dk A/S (direct)
kompetence-mentor.dk	ONE.COM A/S
kompetencementor.dk	ONE.COM A/S
sceneskift.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

33ms

45ms

43ms

AAAA

50ms

TXT

193ms

CAA

48ms

HTTPS

41ms

TLSA

317ms

SOA

0ms

MTA-STS

64ms

DNSSEC

81ms

SRV

69ms

Total

914ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 12:01:48 shown	914ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-01 04:17:02	6775ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 20:00:22	5079ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 15:30:12	881ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 21:20:22	2334ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 07:45:00	943ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 22:30:07	1543ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 08:10:14	672ms	2 NS 1 A 1 MX	🔒 Secure