sisden.dk

📜 Historical scan 2026-06-22 02:42:17 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sisden.dk is a .dk domain served by 2 nameservers (ns1.messagingengine.com, ns2.messagingengine.com). It was registered on 15 September 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 103.168.172.37 is hosted by Fastmail Pty Ltd (AS151847) in United States. Mail is handled by in1-smtp.messagingengine.com, in2-smtp.messagingengine.com. The zone is not DNSSEC-signed, publishes a 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#

2 records 264ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.messagingengine.com	162.159.24.178	ns1.messagingengine.com	AS13335 Cloudflare, Inc.
ns2.messagingengine.com	162.159.25.191	ns2.messagingengine.com	AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 163ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
103.168.172.37	3600s	www.messagingengine.com	AS151847	Fastmail Pty Ltd	103.168.172.0/24	🇺🇸 United States	Philadelphia
103.168.172.52	3600s	www.messagingengine.com	AS151847	Fastmail Pty Ltd	103.168.172.0/24	🇺🇸 United States	Philadelphia

📧 MX Records#

2 records 162ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	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	3600s	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	103.168.172.37
🔶 Autoconfig	103.168.172.37

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

2 records 395ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	1	443	autodiscover.fastmail.com
_imaps._tcp	0	1	993	imap.fastmail.com

📝 TXT Records#

1 records 755ms

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

✉️ SPF#

Policy	Record (sisden.dk)
?all (neutral)	v=spf1 include:spf.messagingengine.com ?all

📨 DMARC#

Policy	Record (_dmarc.sisden.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-12 14:58:41

www	103.168.172.37 103.168.172.52 (AS151847) (address records, no CNAME)
www vs bare domain	Same network sisden.dk: 103.168.172.37 103.168.172.52 (AS151847) www.sisden.dk: 103.168.172.37 103.168.172.52 (AS151847)
Wildcard	Yes: any name under the zone resolves

🔎 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#

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

🔐 DNSSEC#

365ms

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

🏷️ SOA#

161ms

Field	Value
Serial	2026060400
Primary NS (MNAME)	ns1.messagingengine.com
Responsible (RNAME)	postmaster@messagingengine.com
Refresh	86247s
Retry	600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-05 07:16:19

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2010-09-15
Expires	2027-09-30 (348d)

📋 WHOIS#

⏱️ Lookup Timing#

264ms

163ms

162ms

AAAA

149ms

TXT

755ms

CAA

285ms

HTTPS

263ms

TLSA

245ms

SOA

161ms

MTA-STS

143ms

DNSSEC

365ms

SRV

395ms

Total

1451ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 14:58:41	2518ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-07 07:58:49	2868ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-04 05:04:33	2269ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-01 04:55:02	2206ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-26 16:15:53	10427ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-18 21:32:44	2161ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-09 05:28:23	3007ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-04 10:33:45	1803ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-26 09:54:24	3076ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-07 07:41:59	33451ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-05 05:02:43	3667ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-06 01:44:24	2351ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-03 10:05:31	7296ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-28 14:15:22	3687ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-22 02:42:17 shown	1451ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-18 02:42:06	1955ms	2 NS 2 A 2 MX	🔓 Insecure