c-centrum.dk DNS records

🖥️ Nameservers4 records 50ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.249	3600s	linux336.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ccentrum-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::e 2a01:111:f403:ca09::6 2a01:111:f403:ca09::8 52.101.68.15 52.101.68.3 52.101.73.153 52.101.73.8	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am0pr04cu00500.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 → 40.104.116.24
🔶 Autoconfig	93.191.156.249

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records5 records 320ms

TXT Record
brevo-code:c1683f5db130458c5e54ff15919b80ce
facebook-domain-verification=5m30h7f0qsqnxz8uum1qw8p538undm
MS=ms20229351
Sendinblue-code:c1683f5db130458c5e54ff15919b80ce
v=spf1 include:spf.sendinblue.com include:spf.dandomain.dk include:spf.protection.outlook.com include:spf.brevo.com mx ~all

✉️ SPF

Policy	Record (c-centrum.dk)
~all (soft fail)	v=spf1 include:spf.sendinblue.com include:spf.dandomain.dk include:spf.protection.outlook.com include:spf.brevo.com mx ~all

📨 DMARC

Policy	Record (_dmarc.c-centrum.dk)
p=quarantine	v=DMARC1; p=quarantine;

📬 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)

🔐 DNSSEC128ms

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

🏷️ SOA42ms

Field	Value
Serial	2025070300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

50ms

A

42ms

MX

49ms

AAAA

59ms

TXT

320ms

CAA

46ms

HTTPS

44ms

TLSA

721ms

SOA

42ms

MTA-STS

44ms

DNSSEC

128ms

SRV

705ms

Total

1798ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-20 03:29:20	1798ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 18:45:16	647ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 18:40:16	4681ms	4 NS 1 A 1 MX	🔒 Secure	View