s-teori.dk

Records from scan: 2026-10-03 04:38:59 · 421ms total · last checked 2026-10-16 17:22 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

s-teori.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 24 January 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 15.197.253.240 is hosted by Amazon.com, Inc. (AS16509) in United States. The zone is DNSSEC-signed and validates, has no 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 47ms

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#

4 records 23ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
15.197.253.240	3600s	aa415c6ca9a0cf0bf.awsglobalaccelerator.com	AS16509	Amazon.com, Inc.	15.196.0.0/14	🇺🇸 United States	—
3.33.249.164	3600s	aa415c6ca9a0cf0bf.awsglobalaccelerator.com	AS16509	Amazon.com, Inc.	3.33.128.0/17	🇺🇸 United States	—
52.223.53.203	3600s	aac3fde1e70d827ee.awsglobalaccelerator.com	AS16509	Amazon.com, Inc.	52.223.0.0/17	🇺🇸 United States	—
99.83.185.157	3600s	aac3fde1e70d827ee.awsglobalaccelerator.com	AS16509	Amazon.com, Inc.	99.83.128.0/17	🇺🇸 United States	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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#

checked 2026-10-11 10:54:49

www CNAME	contoured-minnow-npi03phj77zwha1op9dd9rvk.herokudns.com (all on herokudns.com) → 15.197.253.240 3.33.249.164 52.223.53.203 99.83.185.157 (AS16509)
www vs bare domain	Same network s-teori.dk: 15.197.253.240 3.33.249.164 52.223.53.203 99.83.185.157 (AS16509) www.s-teori.dk: 15.197.253.240 3.33.249.164 52.223.53.203 99.83.185.157 (AS16509)
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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

58ms

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

🏷️ SOA#

30ms

Field	Value
Serial	2026100200
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 2026-10-03 04:45:18

Field	Value
Registrar	Simply.com A/S
Registered	2024-01-24
Expires	2027-01-23 (97d)

📋 WHOIS#

⏱️ Lookup Timing#

47ms

23ms

26ms

AAAA

34ms

TXT

123ms

CAA

25ms

HTTPS

38ms

TLSA

89ms

SOA

30ms

MTA-STS

33ms

DNSSEC

58ms

SRV

56ms

Total

421ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 04:38:59 shown	421ms	3 NS 4 A 0 MX	🔒 Secure
2026-09-27 03:23:12	507ms	3 NS 4 A 0 MX	🔒 Secure
2026-08-28 03:05:10	596ms	3 NS 4 A 0 MX	🔒 Secure
2026-08-27 00:41:32	860ms	3 NS 4 A 0 MX	🔒 Secure
2026-06-30 15:08:13	666ms	3 NS 4 A 0 MX	🔒 Secure
2026-06-20 16:52:18	1060ms	3 NS 4 A 0 MX	🔒 Secure
2026-06-20 14:23:55	509ms	3 NS 4 A 0 MX	🔒 Secure
2026-06-19 17:48:56	2076ms	3 NS 4 A 0 MX	🔒 Secure
2026-06-17 15:24:35	516ms	3 NS 4 A 0 MX	🔒 Secure