concreto.dk DNS records

🖥️ Nameservers2 records 49ms

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 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.123	3600s	webcluster2.webpod16-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 64ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	concreto-dk.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca09::a 2a01:111:f403:ca09::e 2a01:111:f403:ca09::f 52.101.68.32 52.101.73.2 52.101.73.28 52.101.73.6	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 40.104.116.56
🔶 Autoconfig	46.30.215.123

🔷 AAAA Records (IPv6)1 records 42ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:111:80dd:d698:ee7:645c	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

🔌 SRV Records1 records 72ms

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

📝 TXT Records1 records 180ms

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

✉️ SPF

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

🔐 DNSSEC78ms

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

🏷️ SOA26ms

Field	Value
Serial	2026082801
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

49ms

A

53ms

MX

64ms

AAAA

42ms

TXT

180ms

CAA

57ms

HTTPS

56ms

TLSA

1751ms

SOA

26ms

MTA-STS

73ms

DNSSEC

78ms

SRV

72ms

Total

6332ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 15:35:20	6332ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-28 23:27:27	903ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 21:38:54	1086ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-05 19:16:58	1070ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 07:26:58	1529ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 15:32:51	3205ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 15:48:46	977ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 00:36:32	65535ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 22:08:21	839ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 22:04:18	2043ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 22:00:31	2882ms	2 NS 1 A 1 MX	🔒 Secure	View