tech-chapter.dk

📜 Historical scan 2026-06-19 10:45:26 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tech-chapter.dk is a .dk domain served by 4 nameservers (ns-1169.awsdns-18.org, ns-1905.awsdns-46.co.uk, ns-312.awsdns-39.com and 1 more). It was registered on 22 December 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 18.173.5.112 is hosted by Amazon.com, Inc. (AS16509) in United States. 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#

4 records 69ms

Nameserver	IP addresses	PTR	ASN / ISP
ns-1169.awsdns-18.org	205.251.196.145 2600:9000:5304:9100::1	ns-1169.awsdns-18.org ns-1169.awsdns-18.org	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-1905.awsdns-46.co.uk	205.251.199.113 2600:9000:5307:7100::1	ns-1905.awsdns-46.co.uk ns-1905.awsdns-46.co.uk	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-312.awsdns-39.com	205.251.193.56 2600:9000:5301:3800::1	ns-312.awsdns-39.com ns-312.awsdns-39.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-977.awsdns-58.net	205.251.195.209 2600:9000:5303:d100::1	ns-977.awsdns-58.net ns-977.awsdns-58.net	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

🌍 A Records#

4 records 98ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
18.173.5.112	600s	server-18-173-5-112.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.47	600s	server-18-173-5-47.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.55	600s	server-18-173-5-55.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.88	600s	server-18-173-5-88.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 216ms

TXT Record
v=spf1 ~all

✉️ SPF#

Policy	Record (tech-chapter.dk)
~all (soft fail)	v=spf1 ~all

📨 DMARC#

Policy	Record (_dmarc.tech-chapter.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:postmaster@techchapter.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 2026-10-10 04:12:48

www	18.173.5.112 18.173.5.47 18.173.5.55 18.173.5.88 (AS16509) (address records, no CNAME)
www vs bare domain	Same network tech-chapter.dk: 18.173.5.112 18.173.5.47 18.173.5.55 18.173.5.88 (AS16509) www.tech-chapter.dk: 18.173.5.112 18.173.5.47 18.173.5.55 18.173.5.88 (AS16509)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

130ms

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

🏷️ SOA#

70ms

Field	Value
Serial	1
Primary NS (MNAME)	ns-1905.awsdns-46.co.uk
Responsible (RNAME)	awsdns-hostmaster@amazon.com
Refresh	7200s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-15 22:12:20

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2022-12-22
Expires	2026-12-21 (64d)

🔗 Same registrant#

2 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
skysovs.dk	Punktum dk A/S (direct)
techchapter.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

69ms

98ms

61ms

AAAA

41ms

TXT

216ms

CAA

52ms

HTTPS

51ms

TLSA

86ms

SOA

70ms

MTA-STS

97ms

DNSSEC

130ms

SRV

213ms

Total

1032ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 07:39:18	2891ms	4 NS 4 A 0 MX	🔒 Secure
2026-09-14 16:00:15	3518ms	4 NS 4 A 0 MX	🔒 Secure
2026-06-29 03:38:29	878ms	4 NS 4 A 0 MX	🔒 Secure
2026-06-27 04:24:57	844ms	4 NS 4 A 0 MX	🔒 Secure
2026-06-20 23:41:20	1949ms	4 NS 4 A 0 MX	🔒 Secure
2026-06-20 20:09:42	1116ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 10:45:26 shown	1032ms	4 NS 4 A 0 MX	🔒 Secure
2026-06-17 23:28:17	3289ms	4 NS 4 A 0 MX	🔒 Secure