underboring.dk DNS records

🖥️ Nameservers2 records 62ms

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 45ms

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 Records1 records 74ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	underboring-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::d 2a01:111:f403:ca09::28 2a01:111:f403:ca09::c 52.101.209.153 52.101.68.25 52.101.68.32 52.101.68.36	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-db5pr02cu00104.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 → 40.104.116.56

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 71ms

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

📝 TXT Records2 records 223ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC182ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080801
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

62ms

A

45ms

MX

74ms

AAAA

74ms

TXT

223ms

CAA

35ms

HTTPS

40ms

TLSA

401ms

SOA

0ms

MTA-STS

114ms

DNSSEC

182ms

SRV

71ms

Total

1127ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 23:35:23	1127ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-09 17:45:36	5972ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-29 01:02:22	7155ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 09:51:03	10163ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 06:11:50	726ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 13:04:58	1223ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 19:16:13	2805ms	2 NS 1 A 1 MX	🔒 Secure	View