certasonline.dk DNS records

🖥️ Nameservers3 records 186ms

Nameserver	IP addresses	PTR	ASN / ISP
ns0.phase8.net	81.88.63.114	ns0.phase8.net	AS39729 Register S.p.A.
ns1.phase8.net	85.233.160.68	ns1.phase8.net	AS8622 Team Blue Internet Services Uk Limited
ns2.phase8.net	91.186.2.48	ns2.phase8.net	AS29550 Team Blue Carrier Limited

🌍 A Records1 records 225ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.238.54.167	600s	—	AS8075	Microsoft Corporation	20.192.0.0/10	🇮🇪 Ireland	Dublin

📧 MX Records1 records 222ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
30	600s	certasonline-dk.mail.eo.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca09:: 2a01:111:f403:ca09::9 2a01:111:f403:ca09::d 52.101.68.27 52.101.68.39 52.101.73.11 52.101.73.15	mail-db7pr03cu00401.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am9pr04cu00107.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 252ms

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

📝 TXT Records8 records 655ms

TXT Record
2019091013374144saa9tqkm54b9sx0sko3ouf5d8rktoe68kqnwp7pu501vw9cw
24031a8s6jf07a0grib7k5kloi
67v4es5v71a6g2t87jloh3rdaa
Copy recordMS=ms11489311
gbk3oecdj0o82g4gr7nvqu7mbv
jp1nnnoucmra85bu60psiprcfh
MS=ms60392323
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (certasonline.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)

🔐 DNSSEC334ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2026081301
Primary NS (MNAME)	ns0.phase8.net
Responsible (RNAME)	support@phase8.net
Refresh	28800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

186ms

A

225ms

MX

222ms

AAAA

234ms

TXT

655ms

CAA

243ms

HTTPS

240ms

TLSA

988ms

SOA

0ms

MTA-STS

248ms

DNSSEC

334ms

SRV

252ms

Total

5470ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-14 06:31:01	5470ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-28 07:36:46	4610ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 07:40:58	1143ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 20:10:48	3680ms	3 NS 1 A 1 MX	🔓 Insecure	View