sef.dk

📜 Historical scan 2026-09-22 15:47:48 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sef.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 29 September 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.101.82 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by sef-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 35ms

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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.101.82	600s	linux80.curanet.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 32ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	sef-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::a 2a01:111:f403:ca04::b 2a01:111:f403:ca48::12 52.101.181.156 52.101.185.24 52.101.68.8 52.101.73.155	mail-db4pr02cu00204.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-zrxpr07cu00100.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am7pr02cu00203.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 → 40.104.116.40
🔶 Autoconfig	94.231.101.82

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 49ms

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

📝 TXT Records#

15 records 151ms

TXT Record
_globalsign-domain-verification=e6ZNGgra70Yhv9OGkUlfSPs55wFYgAYP3Bh-K3m31_
_globalsign-domain-verification=HQ3BtqRLmw_e0BGY_-w3jrtc2BzHlt11L-ok4IDaK1
_globalsign-domain-verification=lpovOD08NUhJMHcViITXLk5S3tsPnh2Nt1Xlg5-uuf
_globalsign-domain-verification=MxFFMWDSKmszbSYiByn8wMiNpnAr1VlkFzCdWGmSVm
_globalsign-domain-verification=OfFTX-0wEJwIBPJU15fpCqDxgzHDIGyZ_xiOg7kRfo
_globalsign-domain-verification=sp0GmPwrQ2VLtlgnmKcbt2Txa_XHgwTzLFNafVSIBi
_globalsign-domain-verification=t-7zSgxumhGDrRalZX3x3J9SkPAvrEFi3rheMZAj27
_globalsign-domain-verification=yxiQ6xCNuphQipX2WfSOcHNexVIbWCUM5S9fXN3tOh
anthropic-domain-verification-dvwd5y=DBfxWvEhngnjBs2bDZJhdh9ls
apple-domain-verification=7L8yRp6g8ubND9ue
google-site-verification=iviEu2IAvhGPxHCkaAYNM_FuUrRCd8efoRBBM0tmTA0
MS=D0EA6621E350896536EB48CFEF1C67BD9FBF7008
MS=ms60189894
RuUPcH8pobL+ldjD2P810XTUWui95uUkmUBHPl5kOQ2/NJew7F/Mz5KE6MMJsjWq8+Ohjo7eAD5daGydG0Vx6A==
v=spf1 include:spf.curanet.dk include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.dixa.io ip4:176.22.94.75 ip4:13.80.50.37 ip4:85.27.128.30 ip6:2603:10a6:102:245::12 -all

✉️ SPF#

Policy	Record (sef.dk)
-all (hard fail)	v=spf1 include:spf.curanet.dk include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.dixa.io ip4:176.22.94.75 ip4:13.80.50.37 ip4:85.27.128.30 ip6:2603:10a6:102:245::12 -all

📨 DMARC#

Policy	Record (_dmarc.sef.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:itdrift@sef.dk; ruf=mailto:itdrift@sef.dk; fo=1; 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 2026-10-12 14:26:43

www CNAME	sef.dk (all on sef.dk) → 94.231.101.82 (AS48854)
www vs bare domain	Same network sef.dk: 94.231.101.82 (AS48854) www.sef.dk: 94.231.101.82 (AS48854)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-sef-dk._domainkey.sef5700.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-sef-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: 7/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

114ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092101
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 2026-10-05 01:51:57

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2006-09-29
Expires	2027-09-30 (348d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

32ms

AAAA

30ms

TXT

151ms

CAA

34ms

HTTPS

39ms

TLSA

879ms

SOA

0ms

MTA-STS

56ms

DNSSEC

114ms

SRV

49ms

Total

1521ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 01:18:14	1611ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-22 15:47:48 shown	1521ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-20 06:17:56	1512ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-03 20:09:14	968ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-03 05:59:35	1286ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 18:38:43	786ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 00:52:06	3690ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 13:14:35	3784ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 13:23:39	2649ms	2 NS 1 A 1 MX	🔒 Secure