x400.dk

Records from scan: 2026-09-29 15:39:06 · 1549ms total · last checked 2026-10-19 08:24 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

x400.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by x400-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 37ms

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 Records#

🌍

No A records found

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	x400-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::24 2a01:111:f403:ca21::e 2a01:111:f403:ca48::e 52.101.181.153 52.101.68.15 52.101.68.29 52.101.91.21	mail-db4pr02cu00204.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-matpr05cu00105.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 69ms

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

📝 TXT Records#

4 records 172ms

TXT Record
MS=ms64205839
rhkokhfpmd5of7ka9tj42oclpk
SGLg/yVs38y1ncNhDgUAgUp+bbhiDengJPba+7ex/FTZtjOg2/XO0DLZMlq82Dv3bGX0/FmwxvNNOn8rasySnw==
v=spf1 ip4:85.218.153.165 include:spf.protection.outlook.com include:spf-b.saxobank.com -all

✉️ SPF#

Policy	Record (x400.dk)
-all (hard fail)	v=spf1 ip4:85.218.153.165 include:spf.protection.outlook.com include:spf-b.saxobank.com -all

📨 DMARC#

Policy	Record (_dmarc.x400.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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

🧩 Web & zone#

checked 2026-10-10 22:43:51

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Only www resolves x400.dk: no address www.x400.dk: 46.30.211.38 (AS51468) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u42426164.wl165.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u42426164.wl165.sendgrid.net	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

68ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	2026092501
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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

37ms

32ms

35ms

AAAA

35ms

TXT

172ms

CAA

52ms

HTTPS

51ms

TLSA

596ms

SOA

0ms

MTA-STS

80ms

DNSSEC

68ms

SRV

69ms

Total

1549ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 15:39:06 shown	1549ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-26 04:13:32	766ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-21 16:16:57	1828ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-27 20:48:29	775ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-25 22:59:40	1894ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-17 02:24:48	5340ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-25 19:28:16	1792ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-25 14:48:26	1638ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-19 21:52:54	979ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-17 13:58:25	5915ms	2 NS 0 A 1 MX	🔒 Secure