gcauto.dk

Records from scan: 2026-10-03 14:20:19 · 1424ms total · last checked 2026-10-17 17:39 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gcauto.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 26 October 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.221.253.104 is hosted by Unit IT A/S (AS42876) in Denmark. Mail is handled by gcauto-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#

3 records 49ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 57ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.221.253.104	3600s	—	AS42876	Unit IT A/S	77.221.224.0/19	🇩🇰 Denmark	Tåstrup

📧 MX Records#

1 records 63ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	2932s	gcauto-dk.mail.protection.outlook.com	2a01:111:f403:ca09::24 2a01:111:f403:ca21::c 2a01:111:f403:ca38::a 2a01:111:f403:ca3c::6 52.101.103.39 52.101.209.153 52.101.68.15 52.101.73.145	mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 52.98.154.152
🔶 Autoconfig	77.221.253.104

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 74ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records#

2 records 147ms

TXT Record
MS=ms37865891
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.gcauto.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.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

🧩 Web & zone#

checked 2026-10-17 17:39:31

www	77.221.253.104 (AS42876) (address records, no CNAME)
www vs bare domain	Same network gcauto.dk: 77.221.253.104 (AS42876) www.gcauto.dk: 77.221.253.104 (AS42876)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

3 found

Selector	CNAME	Key
s1	s1.domainkey.u2003615.wl116.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u2003615.wl116.sendgrid.net	RSA · ~1024 bit below 2048 bit
selector1	selector1-gcauto-dk._domainkey.gustavchristensena.onmicrosoft.com	RSA · ~1024 bit below 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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

136ms

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

🏷️ SOA#

54ms

Field	Value
Serial	2026100200
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-03 14:46:07

Field	Value
Registrar	Simply.com A/S
Registered	2001-10-26
Expires	2026-12-31 (74d)

📋 WHOIS#

⏱️ Lookup Timing#

49ms

57ms

63ms

AAAA

55ms

TXT

147ms

CAA

41ms

HTTPS

40ms

TLSA

637ms

SOA

54ms

MTA-STS

74ms

DNSSEC

136ms

SRV

74ms

Total

1424ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 14:20:19 shown	1424ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-30 14:12:47	870ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-27 15:22:32	840ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-05 20:07:27	4660ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-20 05:19:48	1092ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-17 10:00:40	1253ms	3 NS 1 A 1 MX	🔒 Secure