rubberduck.dk DNS records

🖥️ Nameservers4 records 45ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records3 records 54ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
13.48.108.196	600s	ec2-13-48-108-196.eu-north-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	13.32.0.0/11	🇸🇪 Sweden	Stockholm
16.192.18.205	600s	ec2-16-192-18-205.eu-north-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	16.192.0.0/16	🇸🇪 Sweden	Stockholm
51.21.93.16	600s	ec2-51-21-93-16.eu-north-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	51.20.0.0/14	🇸🇪 Sweden	Stockholm

📧 MX Records5 records 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c0d::1a 2a00:1450:4010:c0d::1a 64.233.164.26	lq-in-f26.1e100.net lq-in-x1a.1e100.net lf-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.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
5	3600s	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1b	tp-in-f26.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 8223ms

TXT Record
google-site-verification=aQ7PGlKMCnEFCAodxv1oBeSTE4Nsdw3PaK_mwJ5x2PU
v=spf1 include:_spf.google.com include:spf.simply.com -all

✉️ SPF

Policy	Record (rubberduck.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.rubberduck.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:7lrymkqp@ag.eu.dmarcian.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)

🔐 DNSSEC193ms

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

🏷️ SOA0ms

Field	Value
Serial	2026070602
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

45ms

A

54ms

MX

54ms

AAAA

55ms

TXT

8223ms

CAA

61ms

HTTPS

47ms

TLSA

156ms

SOA

0ms

MTA-STS

86ms

DNSSEC

193ms

SRV

178ms

Total

9693ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-07 00:27:28	9693ms	4 NS 3 A 5 MX	🔒 Secure	View
2026-06-29 00:17:49	936ms	4 NS 3 A 5 MX	🔒 Secure	View
2026-06-25 19:56:10	898ms	4 NS 4 A 5 MX	🔒 Secure	View
2026-06-18 03:21:12	6300ms	4 NS 4 A 5 MX	🔒 Secure	View