arba.dk DNS records

🖥️ Nameservers4 records 55ms

Nameserver	IP addresses	PTR	ASN / ISP
ns-1345.awsdns-40.org	205.251.197.65 2600:9000:5305:4100::1	ns-1345.awsdns-40.org ns-1345.awsdns-40.org	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-1765.awsdns-28.co.uk	205.251.198.229 2600:9000:5306:e500::1	ns-1765.awsdns-28.co.uk ns-1765.awsdns-28.co.uk	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-445.awsdns-55.com	205.251.193.189 2600:9000:5301:bd00::1	ns-445.awsdns-55.com ns-445.awsdns-55.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-530.awsdns-02.net	205.251.194.18 2600:9000:5302:1200::1	ns-530.awsdns-02.net ns-530.awsdns-02.net	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

🌍 A Records4 records 67ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
18.173.5.50	60s	server-18-173-5-50.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.66	60s	server-18-173-5-66.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.68	60s	server-18-173-5-68.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—
18.173.5.69	60s	server-18-173-5-69.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	18.173.0.0/21	🇺🇸 United States	—

📧 MX Records1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	arba-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::c 2a01:111:f403:ca04::f 2a01:111:f403:ca09::a 52.101.68.18 52.101.73.123 52.101.73.24 52.101.73.8	mail-db7pr03cu00601.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-as8pr05cu00300.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 204ms

TXT Record
MS=ms40545412
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (arba.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

🔗 TLSA / DANE

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

🔐 DNSSEC2074ms

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	1
Primary NS (MNAME)	ns-1345.awsdns-40.org
Responsible (RNAME)	awsdns-hostmaster@amazon.com
Refresh	7200s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

55ms

A

67ms

MX

37ms

AAAA

45ms

TXT

204ms

CAA

56ms

HTTPS

63ms

TLSA

1202ms

SOA

0ms

MTA-STS

72ms

DNSSEC

2074ms

SRV

80ms

Total

6201ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 17:41:00	6201ms	4 NS 4 A 1 MX	🔓 Insecure	View
2026-08-26 16:39:03	10039ms	4 NS 4 A 1 MX	🔓 Insecure	View
2026-06-27 19:35:19	1068ms	4 NS 4 A 1 MX	🔓 Insecure	View
2026-06-16 13:38:27	829ms	4 NS 4 A 1 MX	🔓 Insecure	View