celus.dk

📜 Historical scan 2026-10-06 19:28:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

celus.dk is a .dk domain served by 2 nameservers (karl.ns.cloudflare.com, lady.ns.cloudflare.com). It was registered on 24 March 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.80.219 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by celus-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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 82ms

Nameserver	IP addresses	PTR	ASN / ISP
karl.ns.cloudflare.com	108.162.193.190 172.64.33.190 173.245.59.190 2606:4700:58::adf5:3bbe 2803:f800:50::6ca2:c1be 2a06:98c1:50::ac40:21be	karl.ns.cloudflare.com karl.ns.cloudflare.com karl.ns.cloudflare.com karl.ns.cloudflare.com karl.ns.cloudflare.com karl.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
lady.ns.cloudflare.com	108.162.192.127 172.64.32.127 173.245.58.127 2606:4700:50::adf5:3a7f 2803:f800:50::6ca2:c07f 2a06:98c1:50::ac40:207f	lady.ns.cloudflare.com lady.ns.cloudflare.com lady.ns.cloudflare.com lady.ns.cloudflare.com lady.ns.cloudflare.com lady.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 127ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.80.219	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.187.72	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 81ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	celus-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::c 2a01:111:f403:ca09::a 2a01:111:f403:ca21::a 52.101.181.153 52.101.185.21 52.101.209.28 52.101.68.25	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-db8pr02cu00101.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

🔷 AAAA Records (IPv6)#

2 records 79ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:50db	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:bb48	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 89ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.80.219,172.67.187.72 ech=AEX+DQBBUwAgACCTvjcVY2P5NZhyUSyRBdre5pBgM62JR4mUBtHkuDLoCgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:50db,2606:4700:3036::ac43:bb48

📝 TXT Records#

2 records 349ms

TXT Record
MS=ms36655351
v=spf1 mx include:spf.protection.xperion.dk include:servers.mcsv.net include:spf.protection.outlook.com include:_spf.mx.cloudflare.net -all

✉️ SPF#

Policy	Record (celus.dk)
-all (hard fail)	v=spf1 mx include:spf.protection.xperion.dk include:servers.mcsv.net include:spf.protection.outlook.com include:_spf.mx.cloudflare.net -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-17 04:14:06

www	104.21.80.219 172.67.187.72 2606:4700:3033::6815:50db 2606:4700:3036::ac43:bb48 (AS13335) (address records, no CNAME)
www vs bare domain	Same network celus.dk: 104.21.80.219 172.67.187.72 2606:4700:3033::6815:50db 2606:4700:3036::ac43:bb48 (AS13335) www.celus.dk: 104.21.80.219 172.67.187.72 2606:4700:3033::6815:50db 2606:4700:3036::ac43:bb48 (AS13335)
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#

2 found

Selector	CNAME	Key
selector1	selector1-celus-dk._domainkey.xperion390.r-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-celus-dk._domainkey.xperion390.r-v1.dkim.mail.microsoft	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: 5/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.celus.dk	svYrGoiNyyCy-HKVe2Rm_SF3SKlYOmqDVmcT-VDaI-I

🔗 TLSA / DANE#

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

🔐 DNSSEC#

247ms

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

🏷️ SOA#

70ms

Field	Value
Serial	2416750332
Primary NS (MNAME)	karl.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-13 19:38:40

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2024-03-24
Expires	2027-03-23 (156d)

📋 WHOIS#

⏱️ Lookup Timing#

82ms

127ms

81ms

AAAA

79ms

TXT

349ms

CAA

117ms

HTTPS

89ms

TLSA

950ms

SOA

70ms

MTA-STS

132ms

DNSSEC

247ms

SRV

257ms

Total

2278ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 04:14:06	1834ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-06 19:28:41 shown	2278ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-23 17:28:19	1395ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-19 00:10:54	1649ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-11 22:02:01	2525ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-03 09:46:02	1939ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-30 09:13:12	2011ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-28 15:00:43	934ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-05 20:16:56	1905ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-15 18:01:08	10360ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-30 20:57:48	1577ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-25 17:35:29	919ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-23 00:19:14	1191ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 12:45:35	981ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 20:31:06	25659ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 20:10:35	2524ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 20:05:37	506ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 20:00:46	1913ms	2 NS 2 A 1 MX	🔒 Secure