sahlertz.dk

📜 Historical scan 2026-06-24 16:00:07 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sahlertz.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 11 May 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.196.101.130 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by sahlertz-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

3 records 217ms

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 204ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
80.196.101.130	600s	—	AS3292	TDC Holding A/S	80.196.0.0/14	🇩🇰 Denmark	Roskilde

📧 MX Records#

1 records 171ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	sahlertz-dk.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca09:: 2a01:111:f403:ca09::4 2a01:111:f403:ca09::8 52.101.68.39 52.101.68.8 52.101.73.16 52.101.73.8	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	93.191.156.92
🔶 Autoconfig	autodiscover.outlook.com → 40.104.116.8

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 247ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records#

1 records 365ms

TXT Record
v=spf1 include:spf.protection.outlook.com

✉️ SPF#

Policy	Record (sahlertz.dk)
no all — incomplete SPF	v=spf1 include:spf.protection.outlook.com

📨 DMARC#

Policy	Record (_dmarc.sahlertz.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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 2026-10-07 23:50:14

www	93.191.156.92 (AS48854) (address records, no CNAME)
www vs bare domain	Different networks sahlertz.dk: 80.196.101.130 (AS3292) www.sahlertz.dk: 93.191.156.92 (AS48854) (all like this)
Wildcard	Yes: any name under the zone resolves
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: none

warn No "all" and no redirect: mail from unlisted servers gets a neutral result

🔗 TLSA / DANE#

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

🔐 DNSSEC#

273ms

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

🏷️ SOA#

158ms

Field	Value
Serial	2025042300
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 2026-10-02 17:03:45

Field	Value
Registrar	Simply.com A/S
Registered	2000-05-11
Expires	2027-06-30 (248d)

📋 WHOIS#

⏱️ Lookup Timing#

217ms

204ms

171ms

AAAA

183ms

TXT

365ms

CAA

218ms

HTTPS

189ms

TLSA

392ms

SOA

158ms

MTA-STS

154ms

DNSSEC

273ms

SRV

247ms

Total

1560ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 16:45:01	1790ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-30 16:38:18	791ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-16 09:16:41	1158ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-30 09:36:41	813ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-27 16:58:06	1878ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-24 16:00:07 shown	1560ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-23 18:49:04	1679ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-19 00:37:09	1022ms	3 NS 1 A 1 MX	⚠️ Bogus
2026-06-17 11:33:08	771ms	3 NS 1 A 1 MX	🔒 Secure