rcs-security.dk DNS records

🖥️ Nameservers3 records 51ms

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 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.161	3600s	linux273.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 57ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	93.191.156.161
🔶 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 Records1 records 95ms

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

📝 TXT Records1 records 200ms

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

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.rcs-security.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 67ms

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…

🔐 DNSSEC159ms

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

🏷️ SOA0ms

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

51ms

A

51ms

MX

57ms

AAAA

48ms

TXT

200ms

CAA

66ms

HTTPS

56ms

TLSA

67ms

SOA

0ms

MTA-STS

126ms

DNSSEC

159ms

SRV

95ms

Total

754ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 07:00:31	754ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 20:42:15	933ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-29 10:13:43	3126ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-27 07:55:41	16919ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-26 07:20:17	4259ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-25 06:59:28	1183ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-24 06:36:53	1432ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-23 05:34:40	1285ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-22 04:39:28	1426ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-20 16:03:24	1334ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-19 15:15:42	1141ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-18 10:46:51	9723ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-17 07:47:52	9352ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-14 17:00:39	1427ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-13 16:41:05	1831ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-12 03:53:32	1302ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-10 23:24:11	1325ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-08 13:41:52	8942ms	3 NS 0 A 0 MX	⚠️ Bogus	View
2026-06-20 06:55:58	616ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 12:18:18	796ms	3 NS 1 A 1 MX	🔒 Secure	View