isd.dk

📜 Historical scan 2026-09-18 14:28:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

isd.dk is a .dk domain served by 2 nameservers (noel.ns.cloudflare.com, ulla.ns.cloudflare.com). It was registered on 8 January 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.32.234 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by in1-smtp.messagingengine.com, in2-smtp.messagingengine.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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#

2 records 34ms

Nameserver	IP addresses	PTR	ASN / ISP
noel.ns.cloudflare.com	108.162.193.216 172.64.33.216 173.245.59.216 2606:4700:58::adf5:3bd8 2803:f800:50::6ca2:c1d8 2a06:98c1:50::ac40:21d8	noel.ns.cloudflare.com noel.ns.cloudflare.com noel.ns.cloudflare.com noel.ns.cloudflare.com noel.ns.cloudflare.com noel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ulla.ns.cloudflare.com	108.162.192.233 172.64.32.233 173.245.58.233 2606:4700:50::adf5:3ae9 2803:f800:50::6ca2:c0e9 2a06:98c1:50::ac40:20e9	ulla.ns.cloudflare.com ulla.ns.cloudflare.com ulla.ns.cloudflare.com ulla.ns.cloudflare.com ulla.ns.cloudflare.com ulla.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.32.234	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.137.237	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	in1-smtp.messagingengine.com	103.168.172.216 103.168.172.217 103.168.172.218 103.168.172.219 103.168.172.220 103.168.172.221 103.168.172.222 103.168.172.223	phl-mx-01.messagingengine.com phl-mx-02.messagingengine.com phl-mx-03.messagingengine.com phl-mx-04.messagingengine.com phl-mx-05.messagingengine.com phl-mx-06.messagingengine.com phl-mx-07.messagingengine.com phl-mx-08.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd
20	300s	in2-smtp.messagingengine.com	202.12.124.216 202.12.124.217 202.12.124.218 202.12.124.219	stl-mx-01.messagingengine.com stl-mx-02.messagingengine.com stl-mx-03.messagingengine.com stl-mx-04.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.137.237
🔶 Autoconfig	104.21.32.234

🔷 AAAA Records (IPv6)#

2 records 38ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3036::ac43:89ed	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:20ea	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.32.234,172.67.137.237 ech=AEX+DQBBJQAgACCsB3Y/dhxnMnHJPyyoh+mudNUnoRo4qcrHlfJtIkevKQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::ac43:89ed,2606:4700:3037::6815:20ea

📝 TXT Records#

1 records 160ms

TXT Record
v=spf1 include:spf.messagingengine.com ?all

✉️ SPF#

Policy	Record (isd.dk)
?all (neutral)	v=spf1 include:spf.messagingengine.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 2026-10-09 09:28:26

www	104.21.32.234 172.67.137.237 2606:4700:3036::ac43:89ed 2606:4700:3037::6815:20ea (AS13335) (address records, no CNAME)
www vs bare domain	Same network isd.dk: 104.21.32.234 172.67.137.237 2606:4700:3036::ac43:89ed 2606:4700:3037::6815:20ea (AS13335) www.isd.dk: 104.21.32.234 172.67.137.237 2606:4700:3036::ac43:89ed 2606:4700:3037::6815:20ea (AS13335)
Wildcard	No

🔎 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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.isd.dk	QfnTEs5cH4RlZ_WdIrRgijQjoPsJBI6geiABNYd5IBg
TXT	_acme-challenge.isd.dk	ckbcwfwHyJt_v71ZjfqVrqUKLe2FmxPg_Dik1q3CVvU

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

113ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415110862
Primary NS (MNAME)	noel.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-04 06:36:20

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-01-08
Expires	2028-03-31 (526d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

40ms

33ms

AAAA

38ms

TXT

160ms

CAA

38ms

HTTPS

37ms

TLSA

59ms

SOA

0ms

MTA-STS

61ms

DNSSEC

113ms

SRV

53ms

Total

813ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 06:26:37	1493ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-01 06:13:59	633ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-26 00:21:09	1033ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-23 15:11:53	994ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-18 14:28:50 shown	813ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-07 18:38:47	10723ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-21 10:45:36	2187ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-02 03:29:23	1443ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-24 20:23:50	2861ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 23:42:53	1008ms	2 NS 2 A 2 MX	🔓 Insecure