roots4.dk

📜 Historical scan 2026-09-22 23:31:08 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

roots4.dk is a .dk domain served by 2 nameservers (lewis.ns.cloudflare.com, noor.ns.cloudflare.com). It was registered on 10 February 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.26.137 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. 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 30ms

Nameserver	IP addresses	PTR	ASN / ISP
lewis.ns.cloudflare.com	108.162.195.159 162.159.44.159 172.64.35.159 2606:4700:58::a29f:2c9f 2803:f800:50::6ca2:c39f 2a06:98c1:50::ac40:239f	lewis.ns.cloudflare.com lewis.ns.cloudflare.com lewis.ns.cloudflare.com lewis.ns.cloudflare.com lewis.ns.cloudflare.com lewis.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
noor.ns.cloudflare.com	108.162.194.74 162.159.38.74 172.64.34.74 2606:4700:50::a29f:264a 2803:f800:50::6ca2:c24a 2a06:98c1:50::ac40:224a	noor.ns.cloudflare.com noor.ns.cloudflare.com noor.ns.cloudflare.com noor.ns.cloudflare.com noor.ns.cloudflare.com noor.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 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.26.137	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.168.74	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	300s	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfig	autoconfig-mf.onlinemail.io → 185.21.40.62

🔷 AAAA Records (IPv6)#

2 records 41ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:1a89	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:a84a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.26.137,172.67.168.74 ech=AEX+DQBBnAAgACCAPTfj8wc+rYYj7TY9Di7bDNcHG8e5P6FXa8XDwLygXgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:1a89,2606:4700:3034::ac43:a84a

📝 TXT Records#

1 records 189ms

TXT Record
v=spf1 include:spf.onlinemail.io include:spf.protection.roots4.dk include:_custspf.one.com -all

✉️ SPF#

Policy	Record (roots4.dk)
-all (hard fail)	v=spf1 include:spf.onlinemail.io include:spf.protection.roots4.dk include:_custspf.one.com -all

📨 DMARC#

Policy	Record (_dmarc.roots4.dk)
p=reject	v=DMARC1; p=reject

📬 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 2026-10-15 22:20:01

www	104.21.26.137 172.67.168.74 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) (address records, no CNAME)
www vs bare domain	Same network roots4.dk: 104.21.26.137 172.67.168.74 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.roots4.dk: 104.21.26.137 172.67.168.74 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

error include:spf.protection.roots4.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.roots4.dk	N-NJrpNMwnDonWen9crVV6LEeH1xpyLOZXyKy-3kgeY
TXT	_acme-challenge.roots4.dk	wSNja4OhrcfFu131ni3yjf1D_yE-RNHdJDdymLnPePM

🔗 TLSA / DANE#

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

🔐 DNSSEC#

117ms

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	2415588324
Primary NS (MNAME)	lewis.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-15 22:32:52

Field	Value
Registrar	CURANET A/S
Registered	2017-02-10
Expires	2027-02-28 (125d)

🔗 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#

30ms

38ms

39ms

AAAA

41ms

TXT

189ms

CAA

30ms

HTTPS

37ms

TLSA

68ms

SOA

0ms

MTA-STS

55ms

DNSSEC

117ms

SRV

68ms

Total

756ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 22:20:00	4323ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-24 05:23:59	751ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-22 23:31:08 shown	756ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-26 10:53:53	8933ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-01 13:13:08	1009ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-27 11:32:09	1932ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-18 04:55:57	969ms	2 NS 2 A 2 MX	🔓 Insecure