coretech.dk

📜 Historical scan 2026-10-01 19:08:54 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

coretech.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 15 September 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.214.151.75 is hosted by Google Ireland Limited (AS43515) in The Netherlands. Mail is handled by coretech-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 26ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 25ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
35.214.151.75	43200s	75.151.214.35.bc.googleusercontent.com	AS43515	Google Ireland Limited	35.214.128.0/17	🇳🇱 The Netherlands	Groningen

📧 MX Records#

1 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	coretech-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::e 2a01:111:f403:ca04::f 2a01:111:f403:ca3c::8 52.101.68.21 52.101.68.39 52.101.68.8 52.101.73.120	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am7pr02cu00300.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 → 52.98.149.152

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 60ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

4 records 145ms

TXT Record
F1chVrX5oZtur/J6ZxGah3M/RjU6vhDKtNJ3v+OeLhXleGgHL+yC0StGW6HvGAEvBfe+NNxGhBbtAKUWwevKtA==
MS=ms26446027
MS=ms32306863
v=spf1 mx ptr ip4:77.243.43.106 mx:mail.coretech.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (coretech.dk)
-all (hard fail)	v=spf1 mx ptr ip4:77.243.43.106 mx:mail.coretech.dk 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 2026-10-09 21:46:07

www	35.214.151.75 (AS43515) (address records, no CNAME)
www vs bare domain	Same network coretech.dk: 35.214.151.75 (AS43515) www.coretech.dk: 35.214.151.75 (AS43515)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: -all

warn "ptr" is slow, unreliable and discouraged (RFC 7208 §5.5)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

63ms

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

🏷️ SOA#

36ms

Field	Value
Serial	2026100101
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-06 20:36:31

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-09-15
Expires	2027-09-30 (345d)

📋 WHOIS#

⏱️ Lookup Timing#

26ms

25ms

45ms

AAAA

26ms

TXT

145ms

CAA

30ms

HTTPS

24ms

TLSA

587ms

SOA

36ms

MTA-STS

50ms

DNSSEC

63ms

SRV

60ms

Total

989ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 20:11:43	2138ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 19:08:54 shown	989ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-13 21:04:30	1483ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 03:57:26	1581ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 20:20:30	1648ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 14:15:22	1170ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 14:43:33	1086ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 14:37:39	1076ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 22:26:10	774ms	2 NS 1 A 1 MX	🔒 Secure