c4if.dk DNS records

🖥️ Nameservers2 records 36ms

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 Records2 records 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
141.193.213.10	3600s	—	AS209242	Cloudflare London, LLC	141.193.213.0/24	🇺🇸 United States	—
141.193.213.11	3600s	—	AS209242	Cloudflare London, LLC	141.193.213.0/24	🇺🇸 United States	—

📧 MX Records1 records 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	c4if-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca09::7 2a01:111:f403:ca09::c 2a01:111:f403:ca48::a 52.101.68.0 52.101.68.21 52.101.68.3 52.101.73.12	mail-du0pr03cu00102.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am4pr0401cu00104.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 158ms

TXT Record
google-site-verification=7XVXIBjBx-GX2xv7RsBKBS2RhOM74uc7A69K-feW16c
MS=ms73895128
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (c4if.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)

🔐 DNSSEC79ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082005
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

36ms

A

46ms

MX

46ms

AAAA

44ms

TXT

158ms

CAA

51ms

HTTPS

40ms

TLSA

368ms

SOA

0ms

MTA-STS

72ms

DNSSEC

79ms

SRV

94ms

Total

930ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 15:59:54	930ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-20 18:05:01	2011ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-06 11:19:45	3676ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-06 22:46:43	3366ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-04 17:18:38	6000ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-03 00:17:29	16898ms	2 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 20:46:42	985ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-23 20:36:38	1169ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 15:34:29	1293ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-16 18:44:38	609ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-16 18:40:13	2717ms	2 NS 2 A 1 MX	🔒 Secure	View