krebs-co.dk DNS records

🖥️ Nameservers2 records 87ms

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 72ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.28	600s	vm1413.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 105ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	krebsco-dk01c.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::4 2a01:111:f403:ca09::24 2a01:111:f403:ca38::8 52.101.68.15 52.101.68.32 52.101.73.126 52.101.73.8	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am0pr04cu00500.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
🔶 Autoconfig	185.21.40.28

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 331ms

TXT Record
google-site-verification=gKFScxpZGjNcui1Qsvn97cLU6oPwLbuoOBfE9cBLDEU
v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:web.shared.mysmtp.com -all

✉️ SPF

Policy	Record (krebs-co.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:web.shared.mysmtp.com -all

📨 DMARC

Policy	Record (_dmarc.krebs-co.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:hop3z5ei@ag.eu.dmarcian.com;

📬 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)

🔐 DNSSEC210ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082801
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

87ms

A

72ms

MX

105ms

AAAA

106ms

TXT

331ms

CAA

116ms

HTTPS

124ms

TLSA

1219ms

SOA

0ms

MTA-STS

134ms

DNSSEC

210ms

SRV

137ms

Total

2400ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 14:06:26	2400ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-19 09:21:41	1297ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-17 09:45:14	5391ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 02:25:45	2033ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 14:20:36	3140ms	2 NS 1 A 1 MX	🔒 Secure	View