feldstein.dk

📜 Historical scan 2026-06-20 07:51:55 · ← Latest scan

feldstein.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). Mail is handled by feldstein-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers

2 records 290ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.scannet2.dk	185.25.141.9 2a02:2339:4006:10d::4171:4171	ns1.scannet.dk ns1.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.scannet2.dk	2a02:2339:1:112:0:5:1:b11 91.197.248.72	ns2.scannet.dk ns2.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records

🌍

No A records found

📧 MX Records

1 records 186ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	feldstein-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::c 2a01:111:f403:ca09::1 2a01:111:f403:ca09::c 52.101.68.21 52.101.73.26 52.101.73.30 52.101.73.8	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com mail-am7pr05cu00306.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 Records

2 records 2025ms

TXT Record
MS=ms51393115
v=spf1 include:spf.protection.outlook.com ~all

✉️ SPF

Policy	Record (feldstein.dk)
~all (soft 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

🧩 Web & zone

latest probe, not this scan · checked 2026-09-29 21:29:10

www	NXDOMAIN
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE

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

🔐 DNSSEC

2022ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA

1068ms

Field	Value
Serial	2023061601
Primary NS (MNAME)	ns.scannet2.dk
Responsible (RNAME)	hostmaster@scannet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

290ms

934ms

186ms

AAAA

286ms

TXT

2025ms

CAA

581ms

HTTPS

924ms

TLSA

543ms

SOA

1068ms

MTA-STS

323ms

DNSSEC

2022ms

SRV

933ms

Total

6780ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-29 21:29:10	1224ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-25 17:41:27	1100ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-27 20:18:45	1089ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-26 17:43:18	1474ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-29 03:01:27	1129ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-24 18:46:04	1009ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-20 07:51:55 shown	6780ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-17 09:48:36	1229ms	2 NS 0 A 1 MX	🔒 Secure