4plus4.dk

📜 Historical scan 2026-07-23 19:13:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4plus4.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 21 October 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.143 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by 4plus4-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 30ms

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 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.143	3600s	webcluster1.webpod17-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 29ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	4plus4-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::9 2a01:111:f403:ca04::d 2a01:111:f403:ca09::c 52.101.68.15 52.101.68.27 52.101.73.15 52.101.73.19	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr04cu00803.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 → 40.104.116.56
🔶 Autoconfig	46.30.215.143

🔷 AAAA Records (IPv6)#

1 records 29ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:106:7e:b3d8:abae:c952	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

📝 TXT Records#

1 records 175ms

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

✉️ SPF#

Policy	Record (4plus4.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 2026-10-08 05:07:28

www	46.30.215.152 2a02:2350:5:106:c5:9fc8:d32d:b724 (AS51468) (address records, no CNAME)
www vs bare domain	Same network 4plus4.dk: 46.30.215.152 2a02:2350:5:106:c5:9fc8:d32d:b724 (AS51468) www.4plus4.dk: 46.30.215.152 2a02:2350:5:106:c5:9fc8:d32d:b724 (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-4plus4-dk._domainkey.4plus4.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#

55ms

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

🏷️ SOA#

27ms

Field	Value
Serial	2026071801
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 2026-10-05 17:41:43

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2005-10-21
Expires	2029-04-30 (924d)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

31ms

29ms

AAAA

29ms

TXT

175ms

CAA

30ms

HTTPS

19ms

TLSA

362ms

SOA

27ms

MTA-STS

47ms

DNSSEC

55ms

SRV

51ms

Total

5326ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 05:07:28	1021ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 17:35:04	2702ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 17:02:56	992ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 13:12:05	1094ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-22 04:25:38	5219ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-02 15:46:48	3284ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 20:56:53	2294ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 16:18:08	1543ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 12:26:59	6163ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-02 08:24:38	6023ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-24 21:06:18	1404ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-23 19:13:41 shown	5326ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-19 10:41:35	6608ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-14 15:49:28	5066ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 04:04:47	1877ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:51:21	1666ms	2 NS 1 A 1 MX	🔒 Secure