academicbooks.dk DNS records

🖥️ Nameservers2 records 221ms

Nameserver	IP addresses	PTR	ASN / ISP
lee.ns.cloudflare.com	108.162.193.129 172.64.33.129 173.245.59.129 2606:4700:58::adf5:3b81 2803:f800:50::6ca2:c181 2a06:98c1:50::ac40:2181	lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
phoenix.ns.cloudflare.com	108.162.194.201 162.159.38.201 172.64.34.201 2606:4700:50::a29f:26c9 2803:f800:50::6ca2:c2c9 2a06:98c1:50::ac40:22c9	phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 248ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.40.22	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.174.148	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 246ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	academicbooks-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca09::2 2a01:111:f403:ca09::6 2a01:111:f403:ca09::9 52.101.68.27 52.101.68.36 52.101.73.12 52.101.73.4	mail-db9pr02cu00204.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am0pr83cu00404.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)2 records 216ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:ae94	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:2816	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 256ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.40.22,172.67.174.148 ech=AEX+DQBBMQAgACC40t7CX9Ot49VzSnN/Y5WVh5yIpi0NIz4NMTZzg1a9KAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:ae94,2606:4700:3034::6815:2816

🔌 SRV Records1 records 286ms

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

📝 TXT Records5 records 1116ms

TXT Record
apple-domain-verification=rUlkbk1jSUbfMnxS
google-site-verification=gZqbiqV9uYWuScsHSWUThWKP7ywOq47knAmBnW3J7oE
google-site-verification=RGp4U00Bs2InuFY4X4cY6BWwnMJz5bngazyYNrlH7gc
MS=ms92932091
v=spf1 ip4:192.38.111.162/28 ip4:212.97.211.166/27 include:bounce.peytz.dk include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (academicbooks.dk)
-all (hard fail)	v=spf1 ip4:192.38.111.162/28 ip4:212.97.211.166/27 include:bounce.peytz.dk include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.academicbooks.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:slfondendmarc@gmail.com,mailto:dmarc_agg@vali.email; ruf=mailto:slfondendmarc@gmail.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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.academicbooks.dk	fjlB_A_g3gxJO1ERe6lbhtOGc4GlQExRowFH3a6o1yo
TXT	_acme-challenge.academicbooks.dk	z351sG6SuCMOj_8FAmt4g5h-IZ8yv2-CLfFV-7qaKJQ

🔗 TLSA / DANE

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

🔐 DNSSEC457ms

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

🏷️ SOA0ms

Field	Value
Serial	2412642379
Primary NS (MNAME)	lee.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

221ms

A

248ms

MX

246ms

AAAA

216ms

TXT

1116ms

CAA

254ms

HTTPS

256ms

TLSA

579ms

SOA

0ms

MTA-STS

331ms

DNSSEC

457ms

SRV

286ms

Total

11697ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-20 22:12:21	11697ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-18 17:39:08	3949ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-09 18:11:07	1895ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-27 01:29:13	17975ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-16 02:28:08	1905ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-03 20:01:40	6268ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-25 13:31:27	2880ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-22 10:48:03	1170ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 07:34:26	9485ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 12:37:02	1689ms	2 NS 1 A 1 MX	🔒 Secure	View