yco.dk DNS records

🖥️ Nameservers2 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
bob.ns.cloudflare.com	108.162.193.104 172.64.33.104 173.245.59.104 2606:4700:58::adf5:3b68 2803:f800:50::6ca2:c168 2a06:98c1:50::ac40:2168	bob.ns.cloudflare.com bob.ns.cloudflare.com bob.ns.cloudflare.com bob.ns.cloudflare.com bob.ns.cloudflare.com bob.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
dorthy.ns.cloudflare.com	108.162.192.249 172.64.32.249 173.245.58.249 2606:4700:50::adf5:3af9 2803:f800:50::6ca2:c0f9 2a06:98c1:50::ac40:20f9	dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.85.123	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.205.181	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 24ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	yco-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca09::26 2a01:111:f403:ca09::f 2a01:111:f403:ca48::a 52.101.68.32 52.101.73.126 52.101.73.145 52.101.73.24	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-as8pr05cu00300.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

🔷 AAAA Records (IPv6)2 records 36ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:557b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::ac43:cdb5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 24ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.85.123,172.67.205.181 ech=AEX+DQBBZQAgACBUTUY7OTXYVM5MTW5jPMHIeedtzH3an24FIJzEO6tkeQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:557b,2606:4700:3032::ac43:cdb5

🔌 SRV Records1 records 54ms

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

📝 TXT Records3 records 143ms

TXT Record
bw=2BlizPt2lSKgqJO4ax2QOgY859IEXukPBXuEuubU97Cb
cloudflare_dashboard_sso=0134229628ef06897056a396bac0f2e0
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.yco.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:3f4826e719ed424e9d423f5e5862b582@dmarc-reports.cloudflare.net,mailto:it-security+dmarc@yco.dk

📬 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)

🔐 DNSSEC101ms

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

🏷️ SOA0ms

Field	Value
Serial	2413342782
Primary NS (MNAME)	bob.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

35ms

A

37ms

MX

24ms

AAAA

36ms

TXT

143ms

CAA

31ms

HTTPS

24ms

TLSA

1540ms

SOA

0ms

MTA-STS

44ms

DNSSEC

101ms

SRV

54ms

Total

2099ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 10:45:36	2099ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-27 10:37:37	1353ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-07 01:29:53	1634ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-03 11:16:24	1977ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-23 04:00:50	1609ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-21 01:17:35	1229ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-12 06:57:10	1597ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-03 18:39:07	1069ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-28 17:10:52	1342ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-24 12:10:34	2349ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-22 12:36:59	3228ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-20 18:45:08	1176ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 06:20:40	5042ms	2 NS 2 A 1 MX	🔒 Secure	View