excelinstituttet.dk

📜 Historical scan 2026-09-05 02:44:24 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

excelinstituttet.dk is a .dk domain served by 2 nameservers (dale.ns.cloudflare.com, emily.ns.cloudflare.com). It was registered on 11 December 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.70.30 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.domeneshop.no. 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 49ms

Nameserver	IP addresses	PTR	ASN / ISP
dale.ns.cloudflare.com	108.162.193.95 172.64.33.95 173.245.59.95 2606:4700:58::adf5:3b5f 2803:f800:50::6ca2:c15f 2a06:98c1:50::ac40:215f	dale.ns.cloudflare.com dale.ns.cloudflare.com dale.ns.cloudflare.com dale.ns.cloudflare.com dale.ns.cloudflare.com dale.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
emily.ns.cloudflare.com	108.162.192.155 172.64.32.155 173.245.58.155 2606:4700:50::adf5:3a9b 2803:f800:50::6ca2:c09b 2a06:98c1:50::ac40:209b	emily.ns.cloudflare.com emily.ns.cloudflare.com emily.ns.cloudflare.com emily.ns.cloudflare.com emily.ns.cloudflare.com emily.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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.70.30	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.218.207	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	mx.domeneshop.no	194.63.252.21 194.63.252.22 194.63.252.27 194.63.252.28 194.63.252.29 2a01:5b40:0:2201::1 2a01:5b40:0:2202::1 2a01:5b40:0:2203::1 2a01:5b40:0:2204::1 2a01:5b40:0:2205::1	mx01.domeneshop.no mx02.domeneshop.no mx07.domeneshop.no mx08.domeneshop.no mx09.domeneshop.no mx01.domeneshop.no mx02.domeneshop.no mx03.domeneshop.no mx04.domeneshop.no mx05.domeneshop.no	AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS AS12996 Domeneshop AS

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:461e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::ac43:dacf	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 53ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.70.30,172.67.218.207 ech=AEX+DQBBAAAgACBAsr9w2BqoQmwy/OQbgdJULVD3DDVaj/W9y3ro1SBHVAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:461e,2606:4700:3031::ac43:dacf

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.excelinstituttet.dk)
p=reject	v=DMARC1; p=reject; pct=100

📬 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 2026-10-10 01:48:26

www	104.21.70.30 172.67.218.207 2606:4700:3030::6815:461e 2606:4700:3031::ac43:dacf (AS13335) (address records, no CNAME)
www vs bare domain	Same network excelinstituttet.dk: 104.21.70.30 172.67.218.207 2606:4700:3030::6815:461e 2606:4700:3031::ac43:dacf (AS13335) www.excelinstituttet.dk: 104.21.70.30 172.67.218.207 2606:4700:3030::6815:461e 2606:4700:3031::ac43:dacf (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u26084331.wl082.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u26084331.wl082.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.

🔗 TLSA / DANE#

1 records 100ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.domeneshop.no	DANE-EE · SPKI · SHA-256	7FF8B87BB269715FEF08A0F4F0033D7A…

🔐 DNSSEC#

2084ms

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	2413947497
Primary NS (MNAME)	dale.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 02:12:55

Field	Value
Registrar	Domeneshop AS
Registered	2018-12-11
Expires	2026-12-31 (70d)

📋 WHOIS#

⏱️ Lookup Timing#

49ms

41ms

50ms

AAAA

40ms

TXT

203ms

CAA

61ms

HTTPS

53ms

TLSA

100ms

SOA

0ms

MTA-STS

62ms

DNSSEC

2084ms

SRV

67ms

Total

3342ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 01:48:26	2581ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-05 02:44:24 shown	3342ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 15:50:18	846ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 15:15:14	774ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-09 13:17:59	4012ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-07 12:43:18	7146ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 17:02:08	1053ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 06:08:18	1994ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 09:45:41	1048ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 09:08:46	1206ms	2 NS 2 A 1 MX	🔓 Insecure