403.dk DNS records

🖥️ Nameservers3 records 150ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	—	—	—
ns2.simply.com	—	—	—
ns3.simply.com	—	—	—

🌍 A Records1 records 141ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.17	—	linux52.unoeuro.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 149ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 232ms

TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (403.dk)
-all (hard fail)	v=spf1 include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.403.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

🔗 TLSA / DANE2 records 40ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…

🔐 DNSSEC256ms

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

🏷️ SOA142ms

Field	Value
Serial	2025042300
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

150ms

A

141ms

MX

149ms

AAAA

144ms

TXT

232ms

CAA

144ms

HTTPS

142ms

TLSA

40ms

SOA

142ms

MTA-STS

35ms

DNSSEC

256ms

SRV

0ms

Total

629ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-02 12:19:47	797ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-09-01 23:56:11	2740ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-09-01 05:17:16	165ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-30 08:48:31	167ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-29 03:45:32	181ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-28 03:34:05	169ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-26 23:48:27	170ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-25 02:39:28	1145ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-24 02:05:42	2386ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-22 23:13:45	8643ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-21 23:08:07	1047ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-20 23:04:37	5242ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-19 21:49:44	836ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-18 21:20:57	4891ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-17 16:22:44	965ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-15 01:20:50	1168ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-13 21:31:17	831ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-12 20:01:34	2347ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-11 14:41:20	759ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-10 12:07:53	2741ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-01 03:06:52	573ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 13:14:10	629ms	3 NS 1 A 1 MX	🔒 Secure	View