sem-online.dk

📜 Historical scan 2026-06-20 18:16:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sem-online.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 17 June 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 136.243.167.76 is hosted by Hetzner Online GmbH (AS24940) in Germany. 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#

2 records 155ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 2108ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
136.243.167.76	3598s	dedi5139.your-server.de	AS24940	Hetzner Online GmbH	136.243.0.0/16	🇩🇪 Germany	Nuremberg

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	136.243.167.76
🔶 Autoconfig	136.243.167.76

🔷 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#

latest probe, not this scan · checked 2026-10-12 07:16:19

www	136.243.167.76 (AS24940) (address records, no CNAME)
www vs bare domain	Same network sem-online.dk: 136.243.167.76 (AS24940) www.sem-online.dk: 136.243.167.76 (AS24940)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

327ms

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

🏷️ SOA#

124ms

Field	Value
Serial	2026052501
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-05 21:20:51

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-06-17
Expires	2027-06-16 (240d)

📋 WHOIS#

⏱️ Lookup Timing#

155ms

2108ms

142ms

AAAA

2100ms

TXT

540ms

CAA

178ms

HTTPS

128ms

TLSA

91ms

SOA

124ms

MTA-STS

151ms

DNSSEC

327ms

SRV

195ms

Total

2545ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 21:08:56	1513ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-30 20:28:27	600ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-29 20:14:18	1305ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-26 03:25:24	1141ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-23 07:51:24	1169ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 18:16:53 shown	2545ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-18 03:16:06	993ms	2 NS 1 A 0 MX	🔒 Secure