centrumbu.dk

Records from scan: 2026-10-08 03:55:24 · 1925ms total · last checked 2026-10-18 14:42 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

centrumbu.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 6 July 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.116.47.123 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by centrumbu-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 38ms

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 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.116.47.123	3600s	—	AS31027	GlobalConnect A/S	87.116.0.0/18	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	centrumbu-dk.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca04::f 2a01:111:f403:ca09::26 2a01:111:f403:ca3c::6 52.101.103.36 52.101.68.25 52.101.68.27 52.101.68.29	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-dbapr03cu00105.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

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 135ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk ip4:152.115.36.122 include:spf.xmedicus.com -all

✉️ SPF#

Policy	Record (centrumbu.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk ip4:152.115.36.122 include:spf.xmedicus.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#

checked 2026-10-08 03:55:24

www	87.116.47.123 (AS31027) (address records, no CNAME)
www vs bare domain	Same network centrumbu.dk: 87.116.47.123 (AS31027) www.centrumbu.dk: 87.116.47.123 (AS31027)
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: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

123ms

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

🏷️ SOA#

42ms

Field	Value
Serial	2026100701
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 2026-10-08 04:08:06

Field	Value
Registrar	ONE.COM A/S
Registered	2010-07-06
Expires	2027-07-31 (285d)

📋 WHOIS#

⏱️ Lookup Timing#

38ms

45ms

AAAA

51ms

TXT

135ms

CAA

31ms

HTTPS

39ms

TLSA

1219ms

SOA

42ms

MTA-STS

60ms

DNSSEC

123ms

SRV

53ms

Total

1925ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 03:55:24 shown	1925ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 02:23:17	3345ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 02:02:00	789ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 12:02:39	881ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-16 23:01:08	1285ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 23:28:38	2138ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-12 16:23:04	5594ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-15 04:28:35	1652ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 14:36:35	2703ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 05:26:59	1186ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 20:06:16	997ms	2 NS 1 A 1 MX	🔒 Secure