dulong.dk

📜 Historical scan 2026-06-17 05:24:39 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dulong.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 9 January 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.227.38.32 is hosted by Cloudflare, Inc. (AS13335) in Canada. Mail is handled by mx.simply.com. The zone is DNSSEC-signed and validates, has no 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 153ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	—	—	—
ns2.simply.com	—	—	—
ns3.simply.com	—	—	—
ns4.simply.com	—	—	—

🌍 A Records#

1 records 109ms

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

📧 MX Records#

1 records 188ms

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 Records#

2 records 2225ms

TXT Record
google-site-verification=n1QQfwP9Lpa8T8AmXezP_ftOFS4vTqmPWw5DRo1FBVs
v=spf1 include:spf.simply.com ?all

✉️ SPF#

Policy	Record (dulong.dk)
?all (neutral)	v=spf1 include:spf.simply.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-11 18:52:50

www CNAME	shops.myshopify.com (all on myshopify.com) → 23.227.38.74 2620:127:f00f:e:: (AS13335)
www vs bare domain	Same network dulong.dk: 23.227.38.32 (AS13335) www.dulong.dk: 23.227.38.74 2620:127:f00f:e:: (AS13335)
Wildcard	No
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: 1/10 · policy: ?all

warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

2 records 3330ms

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…

🔐 DNSSEC#

3670ms

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

🏷️ SOA#

108ms

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#

WHOIS fetched 2026-10-01 11:45:44

Field	Value
Registrar	Simply.com A/S
Registered	2002-01-09
Expires	2027-03-31 (160d)

📋 WHOIS#

⏱️ Lookup Timing#

153ms

109ms

188ms

AAAA

124ms

TXT

2225ms

CAA

119ms

HTTPS

90ms

TLSA

3330ms

SOA

108ms

MTA-STS

130ms

DNSSEC

3670ms

SRV

0ms

Total

20653ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 11:12:15	1691ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-25 10:33:33	555ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-25 01:45:16	712ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-23 12:42:16	726ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-20 18:06:06	511ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-17 05:24:39 shown	20653ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-17 05:08:05	406ms	4 NS 1 A 1 MX	⚠️ Bogus
2026-06-17 05:00:33	1022ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-17 05:00:31	1525ms	4 NS 1 A 1 MX	⚠️ Bogus