jcn-byggeri.dk DNS records

🖥️ Nameservers2 records 43ms

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 Records1 records 62ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.47.247.18	600s	one.com.webforward.g1i.one	AS51468	One.com A/S	195.47.247.0/24	—	—

📧 MX Records1 records 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	jcnbyggeri-dk0i.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::a 2a01:111:f403:ca09::2 2a01:111:f403:ca09::6 52.101.68.15 52.101.68.3 52.101.73.1 52.101.73.22	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am7pr05cu00106.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 → 52.98.149.136
🔶 Autoconfig	195.47.247.18

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 78ms

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

📝 TXT Records2 records 202ms

TXT Record
MS=ms92800610
v=spf1 -all

✉️ SPF

Policy	Record (jcn-byggeri.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.jcn-byggeri.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:6720990da2064@dmarc-dk.centerasecurity.com;

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC68ms

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

🏷️ SOA61ms

Field	Value
Serial	2026080901
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

43ms

A

62ms

MX

54ms

AAAA

43ms

TXT

202ms

CAA

36ms

HTTPS

40ms

TLSA

742ms

SOA

61ms

MTA-STS

55ms

DNSSEC

68ms

SRV

78ms

Total

5414ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 08:35:07	5414ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 16:09:50	1294ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-16 11:31:04	1211ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-14 12:43:48	911ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 02:03:09	1722ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 09:33:44	1061ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 13:28:34	1410ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 14:46:43	2134ms	2 NS 1 A 1 MX	🔒 Secure	View