check-in.dk

📜 Historical scan 2026-06-30 01:12:18 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

check-in.dk is a .dk domain served by 2 nameservers (june.ns.cloudflare.com, plato.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.89.172 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by checkin-dk01c.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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 58ms

Nameserver	IP addresses	PTR	ASN / ISP
june.ns.cloudflare.com	108.162.192.176 172.64.32.176 173.245.58.176 2606:4700:50::adf5:3ab0 2803:f800:50::6ca2:c0b0 2a06:98c1:50::ac40:20b0	june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
plato.ns.cloudflare.com	108.162.193.223 172.64.33.223 173.245.59.223 2606:4700:58::adf5:3bdf 2803:f800:50::6ca2:c1df 2a06:98c1:50::ac40:21df	plato.ns.cloudflare.com plato.ns.cloudflare.com plato.ns.cloudflare.com plato.ns.cloudflare.com plato.ns.cloudflare.com plato.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.89.172	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.162.176	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 58ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	checkin-dk01c.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::9 2a01:111:f403:ca09::c 2a01:111:f403:ca09::e 52.101.68.16 52.101.73.12 52.101.73.15 52.101.73.8	mail-du2pr03cu00102.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am9pr04cu00107.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

🔷 AAAA Records (IPv6)#

2 records 52ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:59ac	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:a2b0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 61ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.89.172,172.67.162.176 ech=AEX+DQBBqgAgACAAfBBMbDKK+2KTfzVqkPg/Ay9FqW+K5kIF13FnySwQOwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:59ac,2606:4700:3037::ac43:a2b0

🔌 SRV Records#

1 records 108ms

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

📝 TXT Records#

2 records 172ms

TXT Record
MS=ms65045323
v=spf1 include:spf.protection.outlook.com include:mail.iteras.dk include:servers.mcsv.net -all

✉️ SPF#

Policy	Record (check-in.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:mail.iteras.dk include:servers.mcsv.net -all

📨 DMARC#

Policy	Record (_dmarc.check-in.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@itsecurity.dk

📬 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 2026-10-09 13:40:01

www	104.21.89.172 172.67.162.176 2606:4700:3034::6815:59ac 2606:4700:3037::ac43:a2b0 (AS13335) (address records, no CNAME)
www vs bare domain	Same network check-in.dk: 104.21.89.172 172.67.162.176 2606:4700:3034::6815:59ac 2606:4700:3037::ac43:a2b0 (AS13335) www.check-in.dk: 104.21.89.172 172.67.162.176 2606:4700:3034::6815:59ac 2606:4700:3037::ac43:a2b0 (AS13335)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
k1	dkim.mcsv.net	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: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

114ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2408171151
Primary NS (MNAME)	june.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

58ms

44ms

58ms

AAAA

52ms

TXT

172ms

CAA

42ms

HTTPS

61ms

TLSA

687ms

SOA

0ms

MTA-STS

64ms

DNSSEC

114ms

SRV

108ms

Total

1758ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 13:40:01	1585ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-04 05:37:55	1309ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 06:00:49	1189ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-21 02:08:37	2140ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-14 00:32:39	1343ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 23:46:18	791ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-17 02:18:56	1935ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-30 01:12:18 shown	1758ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 20:25:07	2626ms	2 NS 2 A 1 MX	🔓 Insecure