mrkbyg.dk

📜 Historical scan 2026-10-02 00:19:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mrkbyg.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 13 September 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.161 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, publishes a 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#

4 records 29ms

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
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.161	3600s	linux143.unoeuro.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

5 records 27ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c0b::1b 2a00:1450:4010:c0b::1b 64.233.164.26	lo-in-x1b.1e100.net lo-in-f27.1e100.net lf-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	94.231.103.161
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 56ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records#

2 records 126ms

TXT Record
google-site-verification=3XNgfTjzjq3Z8YxIQVxLe3cTrRgs0Y7kMuX6lut36Lo
v=spf1 include:spf.simply.com include:_spf.google.com ~all

✉️ SPF#

Policy	Record (mrkbyg.dk)
~all (soft fail)	v=spf1 include:spf.simply.com include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.mrkbyg.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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 2026-10-08 03:01:58

www	94.231.103.161 (AS48854) (address records, no CNAME)
www vs bare domain	Same network mrkbyg.dk: 94.231.103.161 (AS48854) www.mrkbyg.dk: 94.231.103.161 (AS48854)
Wildcard	Yes: any name under the zone resolves
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

152ms

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

🏷️ SOA#

45ms

Field	Value
Serial	2026100100
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 2026-10-24 12:13:51

Field	Value
Registrar	Simply.com A/S
Registered	2021-09-13
Expires	2027-09-30 (340d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

29ms

35ms

27ms

AAAA

33ms

TXT

126ms

CAA

27ms

HTTPS

39ms

TLSA

122ms

SOA

45ms

MTA-STS

53ms

DNSSEC

152ms

SRV

56ms

Total

1008ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 03:01:58	484ms	4 NS 1 A 5 MX	🔒 Secure
2026-10-02 00:19:41 shown	1008ms	4 NS 1 A 5 MX	🔒 Secure
2026-09-30 00:09:30	659ms	4 NS 1 A 5 MX	🔒 Secure
2026-09-25 22:08:56	775ms	4 NS 1 A 5 MX	🔒 Secure
2026-09-03 07:37:01	827ms	4 NS 1 A 5 MX	🔒 Secure
2026-08-26 02:39:27	636ms	4 NS 1 A 5 MX	🔒 Secure
2026-06-27 05:10:17	806ms	4 NS 1 A 5 MX	🔒 Secure
2026-06-17 20:12:47	868ms	4 NS 1 A 5 MX	🔒 Secure