holtendevelopment.dk

📜 Historical scan 2026-06-28 09:00:43 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

holtendevelopment.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 August 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.183 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by holtendevelopment-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 42ms

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 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.240.183	3600s	webcluster56.webpod11-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	holtendevelopment-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::7 2a01:111:f403:ca09::b 2a01:111:f403:ca09::d 52.101.68.15 52.101.68.21 52.101.73.15 52.101.73.19	mail-db6pr03cu00105.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.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 → 40.104.116.8

🔷 AAAA Records (IPv6)#

1 records 50ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:102:80bd:48c9:f81b:de0b	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#

2 records 141ms

TXT Record
MS=ms54911664
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (holtendevelopment.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 2026-10-09 21:07:44

www	77.111.240.183 2a02:2350:5:102:80bd:48c9:f81b:de0b (AS51468) (address records, no CNAME)
www vs bare domain	Same network holtendevelopment.dk: 77.111.240.183 2a02:2350:5:102:80bd:48c9:f81b:de0b (AS51468) www.holtendevelopment.dk: 77.111.240.183 2a02:2350:5:102:80bd:48c9:f81b:de0b (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#

118ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026062701
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 2026-10-09 21:35:08

Field	Value
Registrar	ONE.COM A/S
Registered	2020-08-02
Expires	2027-08-31 (317d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

40ms

51ms

AAAA

50ms

TXT

141ms

CAA

48ms

HTTPS

49ms

TLSA

904ms

SOA

0ms

MTA-STS

51ms

DNSSEC

118ms

SRV

52ms

Total

1533ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 21:07:44	860ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 16:12:08	1112ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 00:58:57	953ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 06:56:02	1045ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 00:09:38	1333ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-19 14:49:00	760ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 12:49:10	1882ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-22 18:35:16	6184ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-11 05:01:55	1310ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-01 12:54:53	8941ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-29 21:53:55	1354ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 09:00:43 shown	1533ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 14:54:16	1406ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 13:08:45	917ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 14:23:26	687ms	2 NS 1 A 1 MX	🔒 Secure