elkursus.dk

Records from scan: 2026-09-29 15:21:36 · 1834ms total · last checked 2026-10-17 07:52 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

elkursus.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.87 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed and validates, publishes a 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 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 54ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.87	3600s	vm1447.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

7 records 87ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c06::1a 2a00:1450:4010:c06::1a 64.233.165.27	lj-in-x1a.1e100.net lj-in-f26.1e100.net lg-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx2.googlemail.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx3.googlemail.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1a	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx4.googlemail.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx5.googlemail.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 189ms

TXT Record
v=spf1 +a +mx +ip4:35.214.157.204 +ip4:5.134.13.79 include:_spf.mailspamprotection.com include:_spf.google.com include:sendgrid.net include:web.shared.mysmtp.com include:_spf.simplero.com ~all

✉️ SPF#

Policy	Record (elkursus.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:35.214.157.204 +ip4:5.134.13.79 include:_spf.mailspamprotection.com include:_spf.google.com include:sendgrid.net include:web.shared.mysmtp.com include:_spf.simplero.com ~all

📨 DMARC#

Policy	Record (_dmarc.elkursus.dk)
p=none (monitor only)	v=DMARC1; p=none; pct=100; rua=mailto:re+mfztynmmg5p@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 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 2026-10-15 04:04:13

www	185.21.40.87 (AS48854) (address records, no CNAME)
www vs bare domain	Same network elkursus.dk: 185.21.40.87 (AS48854) www.elkursus.dk: 185.21.40.87 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 14/10 · policy: ~all

error 14 DNS lookups: the limit is 10, so a receiver whose evaluation gets past the 10th returns permerror (SPF fails)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

117ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2025071801
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

41ms

54ms

87ms

AAAA

70ms

TXT

189ms

CAA

55ms

HTTPS

52ms

TLSA

170ms

SOA

0ms

MTA-STS

75ms

DNSSEC

117ms

SRV

76ms

Total

1834ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 15:21:36 shown	1834ms	2 NS 1 A 7 MX	🔒 Secure
2026-08-27 19:09:43	843ms	2 NS 1 A 7 MX	🔒 Secure
2026-06-23 04:51:51	2803ms	2 NS 1 A 7 MX	🔒 Secure
2026-06-22 18:17:30	1104ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 06:55:54	634ms	2 NS 1 A 7 MX	🔒 Secure