johnmast.dk

📜 Historical scan 2026-09-09 09:50:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

johnmast.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 24 February 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.137 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by johnmast-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 97ms

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 288ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.240.137	3600s	webcluster10.webpod11-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 189ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	johnmast-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::4 2a01:111:f403:ca21::e 2a01:111:f403:ca3c::a 52.101.103.143 52.101.181.156 52.101.209.28 52.101.73.155	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-am7pr02cu00203.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

1 records 115ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:102:48:50fd:f1e0:7555	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 292ms

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

📝 TXT Records#

1 records 615ms

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

✉️ SPF#

Policy	Record (johnmast.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 02:47:13

www	77.111.240.137 2a02:2350:5:102:48:50fd:f1e0:7555 (AS51468) (address records, no CNAME)
www vs bare domain	Same network johnmast.dk: 77.111.240.137 2a02:2350:5:102:48:50fd:f1e0:7555 (AS51468) www.johnmast.dk: 77.111.240.137 2a02:2350:5:102:48:50fd:f1e0:7555 (AS51468)
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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

344ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026090105
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 2026-10-14 16:23:53

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-02-24
Expires	2027-03-31 (161d)

🔗 Same registrant#

1 domain

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).

Domain	Registrar
staging-johnmast.dk	ONE.COM A/S

📋 WHOIS#

⏱️ Lookup Timing#

97ms

288ms

189ms

AAAA

115ms

TXT

615ms

CAA

253ms

HTTPS

145ms

TLSA

842ms

SOA

0ms

MTA-STS

217ms

DNSSEC

344ms

SRV

292ms

Total

2134ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 02:47:13	2517ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 08:03:09	1671ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-09 09:50:21 shown	2134ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 08:49:09	1481ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-22 23:19:16	1400ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-15 22:48:38	9080ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-15 22:47:28	10220ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-11 10:59:44	1802ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 20:45:57	5465ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 10:05:49	1184ms	2 NS 1 A 1 MX	⚠️ Bogus
2026-06-18 01:47:04	999ms	2 NS 1 A 1 MX	🔒 Secure