underboring.dk

📜 Historical scan 2026-07-13 09:51:03 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

underboring.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.28 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by underboring-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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 49ms

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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.28	600s	vm1350.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	underboring-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::d 2a01:111:f403:ca09::3 2a01:111:f403:ca09::6 52.101.68.12 52.101.68.25 52.101.73.11 52.101.73.24	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as8pr05cu00300.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 → 40.104.62.232

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 8044ms

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

📝 TXT Records#

2 records 215ms

TXT Record
MS=ms94010637
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (underboring.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 21:22:36

www CNAME	underboring.dk (all on underboring.dk) → 185.21.41.28 (AS48854)
www vs bare domain	Same network underboring.dk: 185.21.41.28 (AS48854) www.underboring.dk: 185.21.41.28 (AS48854)
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: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

128ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026070901
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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

49ms

33ms

39ms

AAAA

50ms

TXT

215ms

CAA

57ms

HTTPS

42ms

TLSA

1135ms

SOA

0ms

MTA-STS

50ms

DNSSEC

128ms

SRV

8044ms

Total

10163ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 21:22:36	2736ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-02 16:19:05	5029ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 15:22:20	11784ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-08 16:47:47	1961ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 23:35:23	1127ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 17:45:36	5972ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-29 01:02:22	7155ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-13 09:51:03 shown	10163ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 06:11:50	726ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 13:04:58	1223ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 19:16:13	2805ms	2 NS 1 A 1 MX	🔒 Secure