sahlertz.dk

📜 Historical scan 2026-06-19 00:37:09 · ← 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 but currently fails validation, 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 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#

1 records 47ms

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 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	sahlertz-dk.mail.protection.outlook.com	2a01:111:f403:ca09::2 2a01:111:f403:ca09::3 2a01:111:f403:ca09::6 2a01:111:f403:ca09::b 52.101.68.0 52.101.68.18 52.101.73.2 52.101.73.28	mail-am0pr83cu00402.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 144ms

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

📝 TXT Records#

1 records 306ms

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#

72ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'sahlertz.dk/DNSKEY/IN': 127.0.0.1#53

🏷️ SOA#

48ms

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 (249d)

📋 WHOIS#

⏱️ Lookup Timing#

47ms

AAAA

80ms

TXT

306ms

CAA

50ms

HTTPS

48ms

TLSA

179ms

SOA

48ms

MTA-STS

83ms

DNSSEC

72ms

SRV

144ms

Total

1022ms

🕐 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	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 shown	1022ms	3 NS 1 A 1 MX	⚠️ Bogus
2026-06-17 11:33:08	771ms	3 NS 1 A 1 MX	🔒 Secure