assensfjernvarme.dk

📜 Historical scan 2026-07-02 00:37:57 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

assensfjernvarme.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 2 September 1998 (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 assensfjernvarme-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#

2 records 224ms

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 251ms

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 225ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	assensfjernvarme-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::3 2a01:111:f403:ca09::6 2a01:111:f403:ca09::8 52.101.68.5 52.101.73.12 52.101.73.24 52.101.73.28	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-as8pr05cu00300.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	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 248ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	1	100	5061	sipfed.online.lync.com

📝 TXT Records#

6 records 415ms

TXT Record
_globalsign-domain-verification=-3sjS_N_1ReDwMnQfSDfMn6CWpJGfTqCo07VAa2YId
+oCmtNuu7RYB9GJxNTul1TOIBLDHA0k8aHekPP6IL48
CcaBKNfGmnDTT0JmWLEJrWNgLbvxcB7cB+2TGyz9phA
qJiqTP8FIrhmO4igTSTo7+I1x5+GIwQOeN09RlCkwXM
sPXP2e6RHt5Nt0UqMXcwhaM8qmUc/fFcVnTTA2kkaCY
v=spf1 include:spf.protection.outlook.com ip4:193.104.43.187 ip4:46.36.204.66 ip4:188.182.8.161 ip4:5.179.90.3 -all

✉️ SPF#

Policy	Record (assensfjernvarme.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com ip4:193.104.43.187 ip4:46.36.204.66 ip4:188.182.8.161 ip4:5.179.90.3 -all

📨 DMARC#

Policy	Record (_dmarc.assensfjernvarme.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:tjmpklk7@ag.eu.dmarcian.com; ruf=mailto:tjmpklk7@fr.eu.dmarcian.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 2026-10-09 19:11:27

www	13.107.246.53 (AS8075) (address records, no CNAME)
www vs bare domain	Same network assensfjernvarme.dk: 13.107.246.53 (AS8075) www.assensfjernvarme.dk: 13.107.246.53 (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

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-assensfjernvarme-dk._domainkey.assensfjernvarme.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 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#

340ms

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

🏷️ SOA#

234ms

Field	Value
Serial	2026041302
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 2026-10-16 09:07:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-09-02
Expires	2027-09-30 (343d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

224ms

251ms

225ms

AAAA

234ms

TXT

415ms

CAA

222ms

HTTPS

236ms

TLSA

393ms

SOA

234ms

MTA-STS

274ms

DNSSEC

340ms

SRV

248ms

Total

2018ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 14:35:45	2613ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-27 11:53:34	768ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 16:53:02	1266ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 14:54:07	1697ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-10 11:07:15	1007ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-10 01:28:53	1815ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 01:26:51	1079ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 00:37:57 shown	2018ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 13:45:36	986ms	2 NS 1 A 1 MX	🔒 Secure