by-herringsfeldt.dk DNS records

🖥️ Nameservers2 records 27ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnsserver.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dnsserver.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.8.37.86	10800s	—	AS3308	Norlys Telco A/S	193.8.36.0/23	🇩🇰 Denmark	Ølstykke

📧 MX Records1 records 23ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	byherringsfeldt-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::6 2a01:111:f403:ca09::5 2a01:111:f403:ca09::b 52.101.68.39 52.101.73.11 52.101.73.24 52.101.73.6	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 35ms

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

📝 TXT Records2 records 129ms

TXT Record
MS=ms28210960
v=spf1 include:spf.protection.outlook.com include:mailgun.org ip4:193.8.36.0/22 -all

✉️ SPF

Policy	Record (by-herringsfeldt.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:mailgun.org ip4:193.8.36.0/22 -all

📨 DMARC

Policy	Record (_dmarc.by-herringsfeldt.dk)
p=none (monitor only)	v=DMARC1; p=none; adkim=s; aspf=s;

📬 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)

🔐 DNSSEC59ms

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

🏷️ SOA27ms

Field	Value
Serial	2026010501
Primary NS (MNAME)	ns1.dnsserver.dk
Responsible (RNAME)	hostmaster@curanet.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

NS

27ms

A

32ms

MX

23ms

AAAA

27ms

TXT

129ms

CAA

26ms

HTTPS

33ms

TLSA

477ms

SOA

27ms

MTA-STS

32ms

DNSSEC

59ms

SRV

35ms

Total

1064ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-29 18:21:56	1064ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 07:53:30	1678ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 22:52:56	1300ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 18:44:28	1138ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 14:31:59	1176ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 16:04:23	1337ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 18:20:05	3720ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 18:16:33	4525ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 18:07:32	4437ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 18:00:48	714ms	2 NS 1 A 1 MX	🔒 Secure	View