seaf.dk

Records from scan: 2026-10-04 20:10:57 · 3034ms total · last checked 2026-10-17 06:07 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

seaf.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 October 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.119 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by seaf-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 171ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 217ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.119	3600s	prolinux8.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 105ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	seaf-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::9 2a01:111:f403:ca04::f 2a01:111:f403:ca38::a 52.101.68.21 52.101.91.153 52.101.91.156 52.101.91.21	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-matpr04cu00101.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)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 494ms

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

📝 TXT Records#

2 records 472ms

TXT Record
MS=ms62926174
v=spf1 include:spf.mailanyone.net include:spf.protection.outlook.com ip4:13.80.50.37 -all

✉️ SPF#

Policy	Record (seaf.dk)
-all (hard fail)	v=spf1 include:spf.mailanyone.net include:spf.protection.outlook.com ip4:13.80.50.37 -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#

checked 2026-10-13 01:45:28

www	185.21.42.119 (AS48854) (address records, no CNAME)
www vs bare domain	Same network seaf.dk: 185.21.42.119 (AS48854) www.seaf.dk: 185.21.42.119 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-seaf-dk._domainkey.sef5700.onmicrosoft.com	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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

474ms

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

🏷️ SOA#

109ms

Field	Value
Serial	2026100401
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-04 20:43:11

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-10-16
Expires	2027-10-31 (379d)

📋 WHOIS#

⏱️ Lookup Timing#

171ms

217ms

105ms

AAAA

224ms

TXT

472ms

CAA

270ms

HTTPS

314ms

TLSA

1116ms

SOA

109ms

MTA-STS

408ms

DNSSEC

474ms

SRV

494ms

Total

3034ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 20:10:57 shown	3034ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 19:52:32	1245ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 05:19:10	974ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 06:31:49	1288ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-08 01:36:27	1217ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-07 12:02:31	1308ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-04 13:10:27	1695ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 20:40:18	1265ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 00:30:43	1341ms	2 NS 1 A 1 MX	🔒 Secure