rubberduckco.dk DNS records

🖥️ Nameservers5 records 28ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.gigahost.dk	46.183.139.31	ns1.gigahost.dk	AS47292 Sentia Denmark A/S
ns2.gigahost.dk	46.183.139.222	web22.gigahost.dk	AS47292 Sentia Denmark A/S
ns3.gigahost.dk	71.19.249.71	ns3.gigahost.dk	AS11831 eSecureData
ns4.gigahost.dk	51.79.215.130	ns4.gigahost.dk	AS16276 OVH SAS
ns5.gigahost.dk	77.74.192.83	ns5.gigahost.dk	AS42831 UK Dedicated Servers Limited

🌍 A Records1 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
217.116.232.218	3600s	218.giga-ptr.232.116.217.in-addr.arpa web18.gigahost.dk	AS47292	Sentia Denmark A/S	217.116.224.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 181ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	Rubberduckco-dk.mail.protection.outlook.com	2a01:111:f403:ca04::e 2a01:111:f403:ca09::7 2a01:111:f403:ca09::e 2a01:111:f403:ca48::c 52.101.209.153 52.101.73.11 52.101.73.123 52.101.73.8	mail-db8pr02cu00106.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56
🔶 Autoconfig	rubberduckco.dk → 217.116.232.218

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 225ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records1 records 206ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (rubberduckco.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.rubberduckco.dk	rubberduckco.dk

🔗 TLSA / DANE

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

🔐 DNSSEC211ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082701
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@rubberduckco.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

28ms

A

48ms

MX

181ms

AAAA

196ms

TXT

206ms

CAA

44ms

HTTPS

26ms

TLSA

603ms

SOA

0ms

MTA-STS

56ms

DNSSEC

211ms

SRV

225ms

Total

1449ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 17:25:39	1449ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-20 09:10:32	3299ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-14 05:27:11	9609ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-07 00:20:07	2259ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-31 09:38:31	1602ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-23 03:12:22	1295ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-17 11:17:51	1412ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-12 18:14:56	1854ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-03 19:18:17	10484ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-25 04:54:31	1753ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-18 03:42:01	1644ms	5 NS 1 A 1 MX	🔓 Insecure	View