operaaarhus.dk

📜 Historical scan 2026-06-20 21:50:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

operaaarhus.dk is a .dk domain served by 2 nameservers (kevin.ns.cloudflare.com, marjory.ns.cloudflare.com). It was registered on 30 October 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.15.236 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.operaaarhus.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 95ms

Nameserver	IP addresses	PTR	ASN / ISP
kevin.ns.cloudflare.com	108.162.193.191 172.64.33.191 173.245.59.191 2606:4700:58::adf5:3bbf 2803:f800:50::6ca2:c1bf 2a06:98c1:50::ac40:21bf	kevin.ns.cloudflare.com kevin.ns.cloudflare.com kevin.ns.cloudflare.com kevin.ns.cloudflare.com kevin.ns.cloudflare.com kevin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
marjory.ns.cloudflare.com	108.162.192.193 172.64.32.193 173.245.58.193 2606:4700:50::adf5:3ac1 2803:f800:50::6ca2:c0c1 2a06:98c1:50::ac40:20c1	marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.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 93ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.15.236	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.208.159	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 122ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.operaaarhus.dk	—	—	—

🔷 AAAA Records (IPv6)#

2 records 94ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:fec	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:d09f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 116ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.15.236,172.67.208.159 ech=AEX+DQBBQAAgACD6RriygnhFShwHezuX3s2fhCCTl/l2KxhdqNY5ZPYkXAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:fec,2606:4700:3034::ac43:d09f

📝 TXT Records#

1 records 442ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (operaaarhus.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.operaaarhus.dk)
p=reject	v=DMARC1; p=reject; 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 2026-10-19 00:10:10

www	104.21.15.236 172.67.208.159 2606:4700:3031::6815:fec 2606:4700:3037::ac43:d09f (AS13335) (address records, no CNAME)
www vs bare domain	Same network operaaarhus.dk: 104.21.15.236 172.67.208.159 2606:4700:3031::6815:fec 2606:4700:3037::ac43:d09f (AS13335) www.operaaarhus.dk: 104.21.15.236 172.67.208.159 2606:4700:3031::6815:fec 2606:4700:3037::ac43:d09f (AS13335)
Wildcard	No

✍️ DKIM keys#

6 found

Selector	CNAME	Key
default	—	Revoked (empty key)
dkim	—	Revoked (empty key)
k1	—	Revoked (empty key)
mail	—	Revoked (empty key)
s1	—	Revoked (empty key)
s2	—	Revoked (empty key)

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: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

235ms

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

🏷️ SOA#

87ms

Field	Value
Serial	2405917523
Primary NS (MNAME)	kevin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-19 00:25:32

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-10-30
Expires	2026-12-31 (72d)

🔗 Same registrant#

8 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
danishopera.dk	Punktum dk A/S (direct)
danskeopera.dk	Punktum dk A/S (direct)
dendanskeopera.dk	Punktum dk A/S (direct)
denjyskeopera.dk	Punktum dk A/S (direct)
growopfestival.dk	Punktum dk A/S (direct)
jyske-opera.dk	Punktum dk A/S (direct)
jyskeopera.dk	Punktum dk A/S (direct)
thedanishopera.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

95ms

93ms

122ms

AAAA

94ms

TXT

442ms

CAA

119ms

HTTPS

116ms

TLSA

172ms

SOA

87ms

MTA-STS

107ms

DNSSEC

235ms

SRV

148ms

Total

1054ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-19 00:10:10	687ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-08 00:32:37	448ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 12:11:52	717ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 11:59:49	687ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-24 11:24:04	618ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-20 17:16:54	1611ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-06 05:46:48	1183ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 22:25:18	917ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 21:50:41 shown	1054ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 20:15:44	1020ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 22:06:32	904ms	2 NS 2 A 1 MX	🔓 Insecure