s-byg.dk DNS records

🖥️ Nameservers2 records 491ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 361ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.131	3600s	linux23.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records2 records 379ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sbyg-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::4 2a01:111:f403:ca04::5 2a01:111:f403:ca04::b 52.101.68.29 52.101.68.3 52.101.68.32 52.101.68.5	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du2pr03cu00105.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
32767	3600s	ms40203179.msv1.invalid	—	—	—

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24
🔶 Autoconfig	185.21.41.131

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 599ms

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

✉️ SPF

Policy	Record (s-byg.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

🔗 TLSA / DANE

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

🔐 DNSSEC527ms

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

🏷️ SOA223ms

Field	Value
Serial	2024021901
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

491ms

A

361ms

MX

379ms

AAAA

351ms

TXT

599ms

CAA

372ms

HTTPS

490ms

TLSA

326ms

SOA

223ms

MTA-STS

224ms

DNSSEC

527ms

SRV

484ms

Total

1952ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-27 10:05:49	1952ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-22 19:00:45	923ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-21 18:24:16	1174ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 14:16:56	2423ms	2 NS 1 A 2 MX	🔒 Secure	View