c-lacour.dk

📜 Historical scan 2026-07-18 11:23:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c-lacour.dk is a .dk domain served by 2 nameservers (bella.ns.cloudflare.com, mark.ns.cloudflare.com). It was registered on 31 August 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 75.2.70.75 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by clacour-dk0c.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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 63ms

Nameserver	IP addresses	PTR	ASN / ISP
bella.ns.cloudflare.com	108.162.192.74 172.64.32.74 173.245.58.74 2606:4700:50::adf5:3a4a 2803:f800:50::6ca2:c04a 2a06:98c1:50::ac40:204a	bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mark.ns.cloudflare.com	108.162.193.130 172.64.33.130 173.245.59.130 2606:4700:58::adf5:3b82 2803:f800:50::6ca2:c182 2a06:98c1:50::ac40:2182	mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.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 69ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
75.2.70.75	300s	aacb0a264e514dd48.awsglobalaccelerator.com	AS16509	Amazon.com, Inc.	75.2.0.0/17	🇺🇸 United States	—
99.83.190.102	300s	aacb0a264e514dd48.awsglobalaccelerator.com	AS16509	Amazon.com, Inc.	99.83.128.0/17	🇺🇸 United States	—

📧 MX Records#

1 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	clacour-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca04::e 2a01:111:f403:ca09::20 2a01:111:f403:ca09::9 52.101.68.0 52.101.68.10 52.101.68.8 52.101.73.2	mail-db6pr03cu00105.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as9pr07cu00302.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 → 40.104.62.232

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 102ms

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

📝 TXT Records#

7 records 325ms

TXT Record
apple-domain-verification=hYzHdA4NuFWUvpTJ
apple-domain-verification=hYzHdA4NuFWUvpTJ
cisco-ci-domain-verification=504b6237f4b7f96892b7b4fdb76009664b3fc5c9248443ca1af02f1c8778cad6
proxy-ssl.webflow.com
proxy-ssl.webflow.com
v=spf1 ip4:83.136.91.38 include:spf.protection.outlook.com -all
v=spf1 ip4:83.136.91.38 include:spf.protection.outlook.com -all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (c-lacour.dk)
-all (hard fail)	v=spf1 ip4:83.136.91.38 include:spf.protection.outlook.com -all
-all (hard fail)	v=spf1 ip4:83.136.91.38 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.c-lacour.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc-feedback@educant.dk; aspf=r

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

11 records 62ms

Flags	Tag	Value
0	issue	comodoca.com
0	issue	digicert.com; cansignhttpexchanges=yes
0	issue	letsencrypt.org
0	issue	pki.goog; cansignhttpexchanges=yes
0	issue	rapidssl.com
0	issue	ssl.com
0	issuewild	comodoca.com
0	issuewild	digicert.com; cansignhttpexchanges=yes
0	issuewild	letsencrypt.org
0	issuewild	pki.goog; cansignhttpexchanges=yes
0	issuewild	ssl.com

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-07 17:58:00

www CNAME	cdn.webflow.com (all on webflow.com) → 198.202.211.1 2620:cb:2000::1 (AS13335 AS209242)
www vs bare domain	Different networks c-lacour.dk: 75.2.70.75 99.83.190.102 (AS16509) www.c-lacour.dk: 198.202.211.1 2620:cb:2000::1 (AS13335 AS209242) (all like this)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-clacour-dk0c._domainkey.clacoursskole.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

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

153ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2409846144
Primary NS (MNAME)	bella.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-21 12:19:51

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-08-31
Expires	2027-09-30 (342d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

63ms

69ms

56ms

AAAA

82ms

TXT

325ms

CAA

62ms

HTTPS

59ms

TLSA

8097ms

SOA

0ms

MTA-STS

59ms

DNSSEC

153ms

SRV

102ms

Total

9330ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 15:42:01	1115ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-28 14:04:40	1129ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-27 13:57:05	893ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-20 20:36:02	1760ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-18 20:26:17	1885ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-05 03:45:57	1063ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-29 03:18:58	981ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-11 13:59:05	6074ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-04 20:39:37	2511ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-21 19:37:43	4063ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-18 11:23:53 shown	9330ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-01 09:03:28	891ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-26 17:35:09	1455ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 18:43:27	1219ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 18:41:01	1270ms	2 NS 2 A 1 MX	🔒 Secure