sefenergi.dk

📜 Historical scan 2026-07-01 01:40:34 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sefenergi.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 23 April 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.148 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by web6.netplads.dk. 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 33ms

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 59ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.148	600s	linux101.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	web6.netplads.dk	91.221.196.224	—	AS51468 One.com A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	185.21.41.148
🔶 Autoconfig	185.21.41.148

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 184ms

TXT Record
_globalsign-domain-verification=pBRYy-cRJIxluiQBtZP20uUv-GXJBsKl_Z0og53rwd
google-site-verification=osdId0arrCDChWznZ_vFVj7s4TV099TDHjJgSDrAUzg
v=spf1 a include:spf.curanet.dk -all

✉️ SPF#

Policy	Record (sefenergi.dk)
-all (hard fail)	v=spf1 a include:spf.curanet.dk -all

📨 DMARC#

Policy	Record (_dmarc.sefenergi.dk)
p=reject	v=DMARC1; p=reject; adkim=s; aspf=s;

📬 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 2026-10-11 01:36:13

www	185.21.41.148 (AS48854) (address records, no CNAME)
www vs bare domain	Same network sefenergi.dk: 185.21.41.148 (AS48854) www.sefenergi.dk: 185.21.41.148 (AS48854)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

77ms

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

🏷️ SOA#

31ms

Field	Value
Serial	2026060301
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 14:46:48

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-04-23
Expires	2027-04-30 (193d)

📋 WHOIS#

⏱️ Lookup Timing#

33ms

59ms

36ms

AAAA

23ms

TXT

184ms

CAA

41ms

HTTPS

35ms

TLSA

60ms

SOA

31ms

MTA-STS

40ms

DNSSEC

77ms

SRV

57ms

Total

591ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 14:44:17	632ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 13:52:22	946ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-07 08:19:43	2357ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-06 15:57:16	1108ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 07:57:07	936ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-04 21:40:20	2812ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-01 01:40:34 shown	591ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 05:28:04	591ms	2 NS 1 A 1 MX	⚠️ Bogus
2026-06-17 13:36:48	1461ms	2 NS 1 A 1 MX	🔒 Secure