3cholding.dk DNS records

🖥️ Nameservers4 records 198ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.eurodns.com	199.167.66.107 2610:1c8:b002::107	ns1.eurodns.com ns1.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns2.eurodns.com	104.37.178.107 2610:1c8:b001::107	ns2.eurodns.com ns2.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns3.eurodns.com	199.167.66.108 2610:1c8:b002::108	ns3.eurodns.com ns3.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns4.eurodns.com	104.37.178.108 2610:1c8:b001::108	ns4.eurodns.com ns4.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC

🌍 A Records1 records 203ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
40.68.44.58	3600s	—	AS8075	Microsoft Corporation	40.68.0.0/14	🇳🇱 The Netherlands	Amsterdam

📧 MX Records1 records 190ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	3cholding-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::c 2a01:111:f403:ca09::7 2a01:111:f403:ca09::8 52.101.68.10 52.101.68.25 52.101.68.39 52.101.73.11	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am1pr04cu00103.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 263ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records4 records 536ms

TXT Record
_7la4rdjqj2ru9wpmhk5vgvnyyzz6edy
KbbMrWT3s2EhIXv5O4g/LQO6hZr+On7EWh6RcV2m309nN/W76SXr8k+GWznpgaMWoffdlWGGTdEonz4Of1n3Tw==
MS=ms11049222
v=spf1 ip4:194.182.232.130 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (3cholding.dk)
-all (hard fail)	v=spf1 ip4:194.182.232.130 include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.3cholding.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email

📬 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)

🔐 DNSSEC307ms

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

🏷️ SOA0ms

Field	Value
Serial	2026022533
Primary NS (MNAME)	ns1.eurodns.com
Responsible (RNAME)	hostmaster@eurodns.com
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

198ms

A

203ms

MX

190ms

AAAA

179ms

TXT

536ms

CAA

195ms

HTTPS

185ms

TLSA

260ms

SOA

0ms

MTA-STS

239ms

DNSSEC

307ms

SRV

263ms

Total

4173ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-16 23:51:40	4173ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-08-15 14:30:53	3667ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-08-05 04:43:11	10595ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-07-29 20:59:55	10878ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-07-28 11:16:45	1913ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 09:29:18	9140ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 04:17:39	967ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 16:53:03	1263ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 01:27:16	1157ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 06:33:42	1418ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 13:12:41	2800ms	4 NS 1 A 1 MX	🔒 Secure	View