3550.dk

Records from scan: 2026-10-13 02:20:00 · 764ms total · last checked 2026-10-17 11:06 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3550.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 26 January 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 45ms

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 Records#

1 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.100	600s	dnsforward.simply.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

5 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c03::1a 2a00:1450:4010:c03::1a 64.233.162.26	lr-in-x1a.1e100.net lr-in-f26.1e100.net li-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 99ms

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

✉️ SPF#

Policy	Record (3550.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:spf.simply.com -all

📨 DMARC#

Policy	Record (_dmarc.3550.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:info@3550.dk

📬 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#

checked 2026-10-13 02:20:00

www	94.231.103.100 (AS48854) (address records, no CNAME)
www vs bare domain	Same network 3550.dk: 94.231.103.100 (AS48854) www.3550.dk: 94.231.103.100 (AS48854)
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

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

105ms

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

🏷️ SOA#

28ms

Field	Value
Serial	2026101200
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 2026-10-15 10:47:37

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2005-01-26
Expires	2027-01-31 (105d)

🔗 Same registrant#

31 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
0800.dk	Punktum dk A/S (direct)
2630.dk	Punktum dk A/S (direct)
2635.dk	Punktum dk A/S (direct)
2640.dk	Punktum dk A/S (direct)
2760.dk	Punktum dk A/S (direct)
2820.dk	Punktum dk A/S (direct)
2860.dk	Punktum dk A/S (direct)
2870.dk	Punktum dk A/S (direct)
2970.dk	Punktum dk A/S (direct)
2990.dk	Punktum dk A/S (direct)
3050.dk	Punktum dk A/S (direct)
3080.dk	Punktum dk A/S (direct)
3210.dk	Punktum dk A/S (direct)
3220.dk	Punktum dk A/S (direct)
3230.dk	Punktum dk A/S (direct)
3250.dk	Punktum dk A/S (direct)
3300.dk	Punktum dk A/S (direct)
3520.dk	Punktum dk A/S (direct)
3650.dk	Punktum dk A/S (direct)
3740.dk	Punktum dk A/S (direct)
3782.dk	Punktum dk A/S (direct)
4050.dk	Punktum dk A/S (direct)
4060.dk	Punktum dk A/S (direct)
4070.dk	Punktum dk A/S (direct)
4140.dk	Punktum dk A/S (direct)
4190.dk	Punktum dk A/S (direct)
4320.dk	Punktum dk A/S (direct)
4330.dk	Punktum dk A/S (direct)
4370.dk	Punktum dk A/S (direct)
7442.dk	Punktum dk A/S (direct)
lyt1bog.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

45ms

35ms

37ms

AAAA

35ms

TXT

99ms

CAA

29ms

HTTPS

35ms

TLSA

115ms

SOA

28ms

MTA-STS

44ms

DNSSEC

105ms

SRV

48ms

Total

764ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 02:20:00 shown	764ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-02 20:15:05	878ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-25 19:08:00	588ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-07 03:12:38	696ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-28 22:40:40	681ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-24 00:31:35	1142ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 13:12:53	699ms	3 NS 1 A 5 MX	🔒 Secure