tk-steel.dk

Records from scan: 2026-09-30 19:33:46 · 1190ms total · last checked 2026-10-19 16:46 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tk-steel.dk is a .dk domain served by 2 nameservers (barbara.ns.cloudflare.com, justin.ns.cloudflare.com). It was registered on 25 April 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.17.18 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by tksteel-dk0e.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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 54ms

Nameserver	IP addresses	PTR	ASN / ISP
barbara.ns.cloudflare.com	108.162.192.248 172.64.32.248 173.245.58.248 2606:4700:50::adf5:3af8 2803:f800:50::6ca2:c0f8 2a06:98c1:50::ac40:20f8	barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
justin.ns.cloudflare.com	108.162.193.187 172.64.33.187 173.245.59.187 2606:4700:58::adf5:3bbb 2803:f800:50::6ca2:c1bb 2a06:98c1:50::ac40:21bb	justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.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
104.21.17.18	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.219.144	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	tksteel-dk0e.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca3c::8 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::10 52.101.103.140 52.101.209.28 52.101.91.156 52.101.91.21	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-maspr04cu00104.inbound.protection.outlook.com mail-matpr05cu00105.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 → 40.104.116.24

🔷 AAAA Records (IPv6)#

2 records 37ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3036::6815:1112	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:db90	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 48ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.17.18,172.67.219.144 ech=AEX+DQBBNwAgACANG785NbYxf2vAoHiUugO7PDLchnWNz2f+95epg2DJewAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::6815:1112,2606:4700:3037::ac43:db90

📝 TXT Records#

2 records 180ms

TXT Record
MS=ms45301938
v=spf1 mx a include:spf.curanet.dk include:spf.simply.com include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (tk-steel.dk)
-all (hard fail)	v=spf1 mx a include:spf.curanet.dk include:spf.simply.com include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.tk-steel.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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#

checked 2026-10-10 03:23:59

www	104.21.17.18 172.67.219.144 2606:4700:3036::6815:1112 2606:4700:3037::ac43:db90 (AS13335) (address records, no CNAME)
www vs bare domain	Same network tk-steel.dk: 104.21.17.18 172.67.219.144 2606:4700:3036::6815:1112 2606:4700:3037::ac43:db90 (AS13335) www.tk-steel.dk: 104.21.17.18 172.67.219.144 2606:4700:3036::6815:1112 2606:4700:3037::ac43:db90 (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u25329798.wl049.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u25329798.wl049.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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 7/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

67ms

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

🏷️ SOA#

45ms

Field	Value
Serial	2415454047
Primary NS (MNAME)	barbara.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-08-31 02:34:34

Field	Value
Registrar	Simply.com A/S
Registered	2008-04-25
Expires	2027-04-30 (190d)

📋 WHOIS#

⏱️ Lookup Timing#

54ms

44ms

37ms

AAAA

37ms

TXT

180ms

CAA

39ms

HTTPS

48ms

TLSA

597ms

SOA

45ms

MTA-STS

62ms

DNSSEC

67ms

SRV

81ms

Total

1190ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 19:33:46 shown	1190ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 08:05:33	1731ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 10:44:41	999ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-06 16:31:34	1497ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-31 02:34:01	996ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-22 18:48:24	1443ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-03 13:57:15	1054ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 17:03:11	6893ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 18:34:52	1154ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 01:38:15	2562ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 14:36:43	4110ms	2 NS 2 A 1 MX	🔓 Insecure