flex-bolig.dk

📜 Historical scan 2026-07-25 10:35:28 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

flex-bolig.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 24 September 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.83.208.100 is hosted by Telenor A/S (AS9158) in Denmark. 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 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 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
85.83.208.100	3600s	—	AS9158	Telenor A/S	85.80.0.0/14	🇩🇰 Denmark	Vallensbæk

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 140ms

TXT Record
v=spf1 include:spf.flex-bolig.dk
v=spf1 ip4:85.83.208.100 -all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (flex-bolig.dk)
no all — incomplete SPF	v=spf1 include:spf.flex-bolig.dk
-all (hard fail)	v=spf1 ip4:85.83.208.100 -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 09:14:55

www	NXDOMAIN
www vs bare domain	www does not resolve flex-bolig.dk: 85.83.208.100 (AS9158) www.flex-bolig.dk: no address (all like this)
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: none

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)
error include:spf.flex-bolig.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)
warn No "all" and no redirect: mail from unlisted servers gets a neutral result

🔗 TLSA / DANE#

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

🔐 DNSSEC#

53ms

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

🏷️ SOA#

27ms

Field	Value
Serial	2026070501
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 2026-10-13 00:11:25

Field	Value
Registrar	ONE.COM A/S
Registered	2023-09-24
Expires	2027-09-23 (333d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

31ms

30ms

AAAA

30ms

TXT

140ms

CAA

30ms

HTTPS

29ms

TLSA

249ms

SOA

27ms

MTA-STS

41ms

DNSSEC

53ms

SRV

35ms

Total

4706ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 09:14:55	381ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-05 21:57:16	395ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-25 20:13:46	462ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-08 11:00:48	1543ms	2 NS 1 A 0 MX	🔒 Secure
2026-08-27 00:37:08	619ms	2 NS 1 A 0 MX	🔒 Secure
2026-08-07 22:15:18	710ms	2 NS 1 A 0 MX	🔒 Secure
2026-07-25 10:35:28 shown	4706ms	2 NS 1 A 0 MX	🔒 Secure
2026-07-07 02:05:38	616ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-17 10:00:52	854ms	2 NS 1 A 0 MX	🔒 Secure