holidu.dk

📜 Historical scan 2026-09-29 14:53:48 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

holidu.dk is a .dk domain served by 4 nameservers (ns-1251.awsdns-28.org, ns-1653.awsdns-14.co.uk, ns-57.awsdns-07.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 18.173.5.101 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, 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#

4 records 71ms

Nameserver	IP addresses	PTR	ASN / ISP
ns-1251.awsdns-28.org	205.251.196.227 2600:9000:5304:e300::1	ns-1251.awsdns-28.org ns-1251.awsdns-28.org	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-1653.awsdns-14.co.uk	205.251.198.117 2600:9000:5306:7500::1	ns-1653.awsdns-14.co.uk ns-1653.awsdns-14.co.uk	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-57.awsdns-07.com	205.251.192.57 2600:9000:5300:3900::1	ns-57.awsdns-07.com ns-57.awsdns-07.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-932.awsdns-52.net	205.251.195.164 2600:9000:5303:a400::1	ns-932.awsdns-52.net ns-932.awsdns-52.net	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

🌍 A Records#

4 records 65ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
18.173.5.101	60s	server-18-173-5-101.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.33	60s	server-18-173-5-33.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.36	60s	server-18-173-5-36.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.48	60s	server-18-173-5-48.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—

📧 MX Records#

5 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c02::1a 2a00:1450:4010:c02::1a 74.125.131.27	le-in-f26.1e100.net le-in-x1a.1e100.net lu-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx3.googlemail.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	d2jse2ypbe8y64.cloudfront.net → 18.173.5.33
🔶 Autoconfig	d2jse2ypbe8y64.cloudfront.net → 18.173.5.48

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

5 records 274ms

TXT Record
facebook-domain-verification=a2e91uzhq989pcawwyf3ksw3mmq1ft
google-site-verification=_R6ekQPAWtIClZCnXyH23p9z8WRSqtEYBzb5MqqiG40
google-site-verification=RjI2biMadHxVbIz4O5MQDHrIP9TnoqpQntcxk9Hp8UM
pinterest-site-verification=6e1f5a586c62432a3f036e60f17fd931
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.holidu.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:holidu.dk@dmarc.dnsentinel.holidu.com

📬 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 2026-10-14 10:30:22

www	18.173.5.101 18.173.5.33 18.173.5.36 18.173.5.48 (AS16509) (address records, no CNAME)
www vs bare domain	Same network holidu.dk: 18.173.5.101 18.173.5.33 18.173.5.36 18.173.5.48 (AS16509) www.holidu.dk: 18.173.5.101 18.173.5.33 18.173.5.36 18.173.5.48 (AS16509)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.holidu.dk	d2jse2ypbe8y64.cloudfront.net

🔗 TLSA / DANE#

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

🔐 DNSSEC#

166ms

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

🏷️ SOA#

0ms

Field	Value
Serial	1
Primary NS (MNAME)	ns-1251.awsdns-28.org
Responsible (RNAME)	awsdns-hostmaster@amazon.com
Refresh	7200s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

71ms

65ms

43ms

AAAA

66ms

TXT

274ms

CAA

70ms

HTTPS

69ms

TLSA

156ms

SOA

0ms

MTA-STS

158ms

DNSSEC

166ms

SRV

109ms

Total

5531ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 00:53:12	708ms	4 NS 4 A 5 MX	🔓 Insecure
2026-09-29 14:53:48 shown	5531ms	4 NS 4 A 5 MX	🔓 Insecure
2026-06-23 02:40:53	1935ms	4 NS 4 A 5 MX	🔓 Insecure
2026-06-17 13:29:54	4750ms	4 NS 4 A 5 MX	🔓 Insecure