techchapter.dk
📜 Historical scan 2026-06-17 14:33:41  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   96ms
NameserverIP addressesPTRASN / ISP
ns-1242.awsdns-27.org 205.251.196.218
2600:9000:5304:da00::1		 ns-1242.awsdns-27.org
ns-1242.awsdns-27.org		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
ns-1726.awsdns-23.co.uk 205.251.198.190
2600:9000:5306:be00::1		 ns-1726.awsdns-23.co.uk
ns-1726.awsdns-23.co.uk		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
ns-215.awsdns-26.com 205.251.192.215
2600:9000:5300:d700::1		 ns-215.awsdns-26.com
ns-215.awsdns-26.com		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
ns-824.awsdns-39.net 205.251.195.56
2600:9000:5303:3800::1		 ns-824.awsdns-39.net
ns-824.awsdns-39.net		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
🌍 A Records4 records   96ms
IPTTLPTRASNISP / OrgCIDRCountryCity
143.204.238.101 — server-143-204-238-101.arn53.r.cloudfront.net AS16509 Amazon.com, Inc. 143.204.224.0/20 🇺🇸 United States —
143.204.238.108 — server-143-204-238-108.arn53.r.cloudfront.net AS16509 Amazon.com, Inc. 143.204.224.0/20 🇺🇸 United States —
143.204.238.30 — server-143-204-238-30.arn53.r.cloudfront.net AS16509 Amazon.com, Inc. 143.204.224.0/20 🇺🇸 United States —
143.204.238.33 — server-143-204-238-33.arn53.r.cloudfront.net AS16509 Amazon.com, Inc. 143.204.224.0/20 🇺🇸 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 Records1 records   215ms
TXT Record
v=spf1 ~all
✉️ SPF
PolicyRecord (techchapter.dk)
~all (soft fail) v=spf1 ~all
📨 DMARC
PolicyRecord (_dmarc.techchapter.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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC239ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA90ms
FieldValue
Serial1
Primary NS (MNAME)ns-215.awsdns-26.com
Responsible (RNAME)awsdns-hostmaster@amazon.com
Refresh7200s
Retry900s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
96ms
A
96ms
MX
111ms
AAAA
101ms
TXT
215ms
CAA
85ms
HTTPS
92ms
TLSA
435ms
SOA
90ms
MTA-STS
186ms
DNSSEC
239ms
SRV
0ms
Total
1880ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 06:47:03 3527ms 4 NS 4 A 0 MX 🔒 Secure View
2026-07-03 01:16:53 12321ms 4 NS 4 A 0 MX 🔒 Secure View
2026-06-17 14:33:41 1880ms 4 NS 4 A 0 MX 🔒 Secure View
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