cstudio.dk DNS records

🖥️ Nameservers3 records 38ms

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 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.227.38.65	3600s	myshopify.com	AS13335	Cloudflare, Inc.	23.227.38.0/23	🇨🇦 Canada	Ottawa

📧 MX Records1 records 28ms

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
🔶 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 47ms

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

📝 TXT Records3 records 134ms

TXT Record
canva-domain-verify=860833ed-b01b-4876-b92b-0cdfe8297488
v=spf1 include:_spf.mlsend.com include:shops.shopify.com include:spf.simply.com -all
v=spf1 include:shops.shopify.com include:spf.simply.com -all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (cstudio.dk)
-all (hard fail)	v=spf1 include:_spf.mlsend.com include:shops.shopify.com include:spf.simply.com -all
-all (hard fail)	v=spf1 include:shops.shopify.com include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.cstudio.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 53ms

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

🔐 DNSSEC56ms

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

🏷️ SOA0ms

Field	Value
Serial	2026072703
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

38ms

A

30ms

MX

28ms

AAAA

28ms

TXT

134ms

CAA

37ms

HTTPS

37ms

TLSA

53ms

SOA

0ms

MTA-STS

36ms

DNSSEC

56ms

SRV

47ms

Total

693ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 15:13:20	625ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-02 20:10:54	630ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-31 15:45:13	842ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-28 13:01:32	693ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-23 11:14:16	8703ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-20 14:33:28	696ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 13:55:24	1022ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 10:45:46	993ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 23:06:31	454ms	3 NS 1 A 1 MX	🔒 Secure	View