issuu.dk
Last scanned: 2026-08-26 17:35:10  ·  3200ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   32ms
NameserverIP addressesPTRASN / ISP
ns-1082.awsdns-07.org 205.251.196.58
2600:9000:5304:3a00::1		 ns-1082.awsdns-07.org
ns-1082.awsdns-07.org		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
ns-1798.awsdns-32.co.uk 205.251.199.6
2600:9000:5307:600::1		 ns-1798.awsdns-32.co.uk
ns-1798.awsdns-32.co.uk		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
ns-231.awsdns-28.com 205.251.192.231
2600:9000:5300:e700::1		 ns-231.awsdns-28.com
ns-231.awsdns-28.com		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
ns-946.awsdns-54.net 205.251.195.178
2600:9000:5303:b200::1		 ns-946.awsdns-54.net
ns-946.awsdns-54.net		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
🌍 A Records2 records   41ms
IPTTLPTRASNISP / OrgCIDRCountryCity
199.232.211.52 3600s — AS54113 Fastly, Inc. 199.232.0.0/16 🇺🇸 United States —
199.232.215.52 3600s — AS54113 Fastly, Inc. 199.232.0.0/16 🇺🇸 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   198ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (issuu.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.issuu.dk)
p=reject v=DMARC1; p=reject; rua=mailto:reports@dmarc.bendingspoons.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)
🔐 DNSSEC93ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial1
Primary NS (MNAME)ns-1082.awsdns-07.org
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
32ms
A
41ms
MX
39ms
AAAA
43ms
TXT
198ms
CAA
41ms
HTTPS
44ms
TLSA
135ms
SOA
0ms
MTA-STS
51ms
DNSSEC
93ms
SRV
64ms
Total
3200ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 17:35:10 3200ms 4 NS 2 A 0 MX 🔓 Insecure View
2026-06-26 20:03:28 1365ms 4 NS 2 A 0 MX 🔓 Insecure View
2026-06-18 03:45:03 858ms 4 NS 2 A 0 MX 🔓 Insecure View
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