gelstedfjernvarme.dk

📜 Historical scan 2026-09-17 15:59:01 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gelstedfjernvarme.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 8 June 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.64.13 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by gelstedfjernvarme-dk.mail.protection.outlook.com. 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 151ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 105ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.64.13	3600s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇮🇪 Ireland	Dublin

📧 MX Records#

1 records 141ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	gelstedfjernvarme-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca04::d 2a01:111:f403:ca38::8 2a01:111:f403:ca48::c 52.101.68.21 52.101.73.126 52.101.73.145 52.101.91.162	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-matpr04cu00302.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	autodiscover.outlook.com → 52.98.253.152

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

8 records 355ms

TXT Record
_globalsign-domain-verification=k-cv-R3yR8jmH6JBt4SE11qOpJWtq0Ugb1xVgjpiB2
_globalsign-domain-verification=T-CZbuU-y8A7Ahd5hnObCvTsT4SvM0O0wKsA2n9ZF-
+oCmtNuu7RYB9GJxNTul1TOIBLDHA0k8aHekPP6IL48
CcaBKNfGmnDTT0JmWLEJrWNgLbvxcB7cB+2TGyz9phA
MS=ms17585122
qJiqTP8FIrhmO4igTSTo7+I1x5+GIwQOeN09RlCkwXM
sPXP2e6RHt5Nt0UqMXcwhaM8qmUc/fFcVnTTA2kkaCY
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (gelstedfjernvarme.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 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 2026-10-17 21:53:42

www	13.107.213.53 (AS8075) (address records, no CNAME)
www vs bare domain	Same network gelstedfjernvarme.dk: 13.107.213.53 (AS8075) www.gelstedfjernvarme.dk: 13.107.213.53 (AS8075)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

161ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026091202
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-08 09:36:31

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-06-08
Expires	2027-06-30 (245d)

📋 WHOIS#

⏱️ Lookup Timing#

151ms

105ms

141ms

AAAA

152ms

TXT

355ms

CAA

135ms

HTTPS

140ms

TLSA

238ms

SOA

0ms

MTA-STS

103ms

DNSSEC

161ms

SRV

406ms

Total

1247ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 04:52:45	2610ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 01:28:16	519ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 21:13:41	1241ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-17 15:59:01 shown	1247ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-09 10:41:58	1325ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 19:42:56	1427ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-06 17:43:29	3261ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 10:23:29	2581ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 22:29:45	3638ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 02:34:21	1169ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 09:24:43	732ms	2 NS 1 A 1 MX	🔒 Secure