1423.dk

📜 Historical scan 2026-10-01 00:51:10 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

1423.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 21 January 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.151 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by 1423-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 42ms

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#

1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.151	3600s	webcluster1.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	1423-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca38::a 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::e 52.101.181.156 52.101.185.24 52.101.73.123 52.101.91.21	mail-db4pr02cu00204.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-zrxpr07cu00100.inbound.protection.outlook.com mail-am6pr02cu00203.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 → 52.98.149.152

🔷 AAAA Records (IPv6)#

1 records 46ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:ba:f508:4013:b9e5	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 68ms

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

📝 TXT Records#

1 records 173ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:_spf.monday.com -all

✉️ SPF#

Policy	Record (1423.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.monday.com -all

📨 DMARC#

Policy	Record (_dmarc.1423.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#

latest probe, not this scan · checked 2026-10-08 01:45:39

www	46.30.213.151 2a02:2350:5:10c:ba:f508:4013:b9e5 (AS51468) (address records, no CNAME)
www vs bare domain	Same network 1423.dk: 46.30.213.151 2a02:2350:5:10c:ba:f508:4013:b9e5 (AS51468) www.1423.dk: 46.30.213.151 2a02:2350:5:10c:ba:f508:4013:b9e5 (AS51468)
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.u59348571.wl072.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u59348571.wl072.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

error include:_spf.monday.com has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

121ms

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

🏷️ SOA#

48ms

Field	Value
Serial	2026093001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-01 01:31:08

Field	Value
Registrar	ONE.COM A/S
Registered	2009-01-21
Expires	2027-01-31 (106d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

44ms

38ms

AAAA

46ms

TXT

173ms

CAA

50ms

HTTPS

42ms

TLSA

204ms

SOA

48ms

MTA-STS

55ms

DNSSEC

121ms

SRV

68ms

Total

1008ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 01:14:42	2728ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 00:51:10 shown	1008ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 00:21:44	1258ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 17:11:29	1047ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-08 19:46:31	1369ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-11 02:25:11	1861ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 00:46:44	928ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:42:08	968ms	2 NS 1 A 1 MX	🔒 Secure