by-gro.dk DNS records

🖥️ Nameservers3 records 63ms

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 Records1 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.51.189.19	3600s	ec2-52-51-189-19.eu-west-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	52.48.0.0/14	🇮🇪 Ireland	Dublin

📧 MX Records5 records 63ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	by-gro.dk.mx.one.com	104.37.34.70 104.37.34.71 104.37.34.72 104.37.34.73	mx1.pub.mailpod10-cph3.one.com mx2.pub.mailpod10-cph3.one.com mx3.pub.mailpod10-cph3.one.com mx4.pub.mailpod10-cph3.one.com	AS51468 One.com A/S AS51468 One.com A/S AS51468 One.com A/S AS51468 One.com A/S
10	3600s	mx1.pub.mailpod11-cph3.one.com	104.37.34.230	mx1.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	3600s	mx2.pub.mailpod11-cph3.one.com	104.37.34.231	mx2.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	3600s	mx3.pub.mailpod11-cph3.one.com	104.37.34.232	mx3.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	3600s	mx4.pub.mailpod11-cph3.one.com	104.37.34.233	mx4.pub.mailpod11-cph3.one.com	AS51468 One.com A/S

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 220ms

TXT Record
v=spf1 include:_custspf.one.com ~all

✉️ SPF

Policy	Record (by-gro.dk)
~all (soft fail)	v=spf1 include:_custspf.one.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

🔗 TLSA / DANE4 records 135ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…
SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…
SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…
SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	00E55642F312E05CDB899B1433EDF47F…

🔐 DNSSEC88ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA47ms

Field	Value
Serial	2024101400
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

63ms

A

63ms

MX

63ms

AAAA

64ms

TXT

220ms

CAA

43ms

HTTPS

70ms

TLSA

135ms

SOA

47ms

MTA-STS

53ms

DNSSEC

88ms

SRV

70ms

Total

930ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-23 20:20:12	930ms	3 NS 1 A 5 MX	🔓 Insecure	View
2026-06-23 05:41:02	946ms	3 NS 1 A 5 MX	🔓 Insecure	View
2026-06-16 18:15:01	3490ms	3 NS 1 A 5 MX	🔓 Insecure	View
2026-06-16 18:02:21	2876ms	3 NS 1 A 5 MX	🔓 Insecure	View
2026-06-16 18:00:47	771ms	3 NS 1 A 5 MX	🔓 Insecure	View
2026-06-16 18:00:23	916ms	3 NS 1 A 5 MX	🔓 Insecure	View