theilmann-it.dk

📜 Historical scan 2026-08-28 13:44:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

theilmann-it.dk is a .dk domain served by 2 nameservers (amir.ns.cloudflare.com, kami.ns.cloudflare.com). It was registered on 22 March 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.64.5 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by theilmannit-dk02c.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 62ms

Nameserver	IP addresses	PTR	ASN / ISP
amir.ns.cloudflare.com	108.162.193.62 172.64.33.62 173.245.59.62 2606:4700:58::adf5:3b3e 2803:f800:50::6ca2:c13e 2a06:98c1:50::ac40:213e	amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kami.ns.cloudflare.com	108.162.192.177 172.64.32.177 173.245.58.177 2606:4700:50::adf5:3ab1 2803:f800:50::6ca2:c0b1 2a06:98c1:50::ac40:20b1	kami.ns.cloudflare.com kami.ns.cloudflare.com kami.ns.cloudflare.com kami.ns.cloudflare.com kami.ns.cloudflare.com kami.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 113ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.64.5	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.173.184	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 81ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	theilmannit-dk02c.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::3 2a01:111:f403:ca09::4 2a01:111:f403:ca09::5 52.101.68.32 52.101.68.39 52.101.73.19 52.101.73.6	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am6pr04cu00306.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)#

2 records 113ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:4005	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:adb8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 106ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.64.5,172.67.173.184 ech=AEX+DQBBjQAgACBSh8QW+XqlJXROM9FqAwq4DhVtV7x48NVL/eUjcZ0oNAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4005,2606:4700:3037::ac43:adb8

📝 TXT Records#

1 records 370ms

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

✉️ SPF#

Policy	Record (theilmann-it.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 2026-10-16 02:11:53

www	104.21.64.5 172.67.173.184 2606:4700:3031::6815:4005 2606:4700:3037::ac43:adb8 (AS13335) (address records, no CNAME)
www vs bare domain	Same network theilmann-it.dk: 104.21.64.5 172.67.173.184 2606:4700:3031::6815:4005 2606:4700:3037::ac43:adb8 (AS13335) www.theilmann-it.dk: 104.21.64.5 172.67.173.184 2606:4700:3031::6815:4005 2606:4700:3037::ac43:adb8 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.theilmann-it.dk	5xKpaHwbYEMM4rwIjt8qluUESVomyWPwJDNEiYeuKm4
TXT	_acme-challenge.theilmann-it.dk	J8WgB3XH_-XbMhPfC9TSlBY8lI0-vliJTKdhLCkdYA4

🔗 TLSA / DANE#

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

🔐 DNSSEC#

319ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2413359968
Primary NS (MNAME)	amir.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 11:47:15

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-03-22
Expires	2027-03-31 (163d)

🔗 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#

62ms

113ms

81ms

AAAA

113ms

TXT

370ms

CAA

78ms

HTTPS

106ms

TLSA

441ms

SOA

0ms

MTA-STS

205ms

DNSSEC

319ms

SRV

214ms

Total

1724ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 02:11:53	1994ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 00:30:28	771ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 04:08:44	1926ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-24 06:36:24	2031ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 10:27:42	2370ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-11 08:52:00	1515ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-01 02:19:31	1578ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 13:44:33 shown	1724ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 12:26:56	1060ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-21 11:23:19	1692ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-08 01:48:28	2006ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-12 09:40:30	3237ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-03 18:04:11	3131ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 17:28:02	3000ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 16:19:42	1108ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 04:50:40	1046ms	2 NS 2 A 1 MX	🔓 Insecure