john-olsen-el.dk

Records from scan: 2026-10-19 23:45:57 · 1230ms total · last checked 2026-10-24 17:21 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

john-olsen-el.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 23 April 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.28 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by johnolsenel-dk01be.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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 31ms

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 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.28	3600s	vm1350.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	johnolsenel-dk01be.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca04::d 2a01:111:f403:ca48::12 2a01:111:f403:ca48::c 52.101.103.162 52.101.68.27 52.101.68.29 52.101.73.123	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00203.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)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 87ms

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

📝 TXT Records#

2 records 144ms

TXT Record
MS=ms55654395
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (john-olsen-el.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#

checked 2026-10-19 23:45:57

www	185.21.41.28 (AS48854) (address records, no CNAME)
www vs bare domain	Same network john-olsen-el.dk: 185.21.41.28 (AS48854) www.john-olsen-el.dk: 185.21.41.28 (AS48854)
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#

55ms

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

🏷️ SOA#

32ms

Field	Value
Serial	2026101905
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 2026-10-15 17:00:44

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-04-23
Expires	2027-06-30 (247d)

🔗 Same registrant#

2 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).

Domain	Registrar
dengroenneelektriker.dk	Punktum dk A/S (direct)
skes.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

31ms

29ms

40ms

AAAA

37ms

TXT

144ms

CAA

18ms

HTTPS

34ms

TLSA

883ms

SOA

32ms

MTA-STS

37ms

DNSSEC

55ms

SRV

87ms

Total

1230ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-19 23:45:57 shown	1230ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 04:32:01	1200ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 04:10:18	823ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-07 12:39:40	1033ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-21 09:50:24	2067ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-20 08:25:47	1368ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 20:44:50	5500ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-04 05:20:10	1776ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 09:56:33	5594ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 00:28:55	1390ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 07:55:55	1897ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 03:45:34	845ms	2 NS 1 A 1 MX	🔒 Secure