erik-serup.dk DNS records

🖥️ Nameservers2 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.241.88	3600s	—	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 57ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	erikserup-dk01b.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca09::24 2a01:111:f403:ca09::26 2a01:111:f403:ca09::b 52.101.103.140 52.101.68.0 52.101.68.25 52.101.68.8	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-du0pr03cu00100.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 → 40.104.116.8
🔶 Autoconfig	77.111.241.88

🔷 AAAA Records (IPv6)1 records 49ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:104:c0:8dc2:183f:2f6a	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 170ms

TXT Record
google-site-verification=P0q4mNNIa8FTcujB1SfRnyVOn6ss9x9VtzI0T-SS7y0
MS=ms92796266
v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com include:sendgrid.net include:_custspf.one.com -all

✉️ SPF

Policy	Record (erik-serup.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com include:sendgrid.net include:_custspf.one.com -all

📨 DMARC

Policy	Record (_dmarc.erik-serup.dk)
p=none (monitor only)	v=DMARC1; p=none; pct=100; rua=mailto:re+uhemjy91vxi@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 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)

🔐 DNSSEC94ms

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

🏷️ SOA0ms

Field	Value
Serial	2026083105
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

35ms

A

51ms

MX

57ms

AAAA

49ms

TXT

170ms

CAA

54ms

HTTPS

36ms

TLSA

4034ms

SOA

0ms

MTA-STS

83ms

DNSSEC

94ms

SRV

85ms

Total

6775ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 04:17:02	6775ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 20:00:22	5079ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 15:30:12	881ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 21:20:22	2334ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 07:45:00	943ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 22:30:07	1543ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 08:10:14	672ms	2 NS 1 A 1 MX	🔒 Secure	View