isbn.dk DNS records

🖥️ Nameservers2 records 52ms

Nameserver	IP addresses	PTR	ASN / ISP
sec1.rcode0.net	192.174.68.100 2001:67c:1bc::100	ns2.is-fun.net c.ns.unihost.eu	AS1921 ipcom GmbH AS1921 ipcom GmbH
sec2.rcode0.net	176.97.158.100 2001:67c:10b8::100	ns2.cid.de ns2.comteam.at	AS207021 ipcom GmbH AS207021 ipcom GmbH

🌍 A Records1 records 2042ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.111.162.19	598s	misc-proxy.dbc.dk	AS24853	Dbc Digital A/s	193.111.162.0/24	🇩🇰 Denmark	—

📧 MX Records1 records 58ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	isbn-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::10 2a01:111:f403:ca09::c 2a01:111:f403:ca48::8 52.101.68.36 52.101.73.15 52.101.73.153 52.101.73.24	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr05cu00401.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)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 260ms

TXT Record
MS=ms13523663
v=spf1 ip4:193.111.162.2 ip4:193.111.162.134 include:spf.protection.outlook.com include:spf.mailanyone.net include:servers.mcsv.net -all

✉️ SPF

Policy	Record (isbn.dk)
-all (hard fail)	v=spf1 ip4:193.111.162.2 ip4:193.111.162.134 include:spf.protection.outlook.com include:spf.mailanyone.net include:servers.mcsv.net -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 Records2 records 64ms

Flags	Tag	Value
0	iodef	mailto:domains@dbc.dk
0	issue	letsencrypt.org

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.isbn.dk	_acme-challenge.isbn.dk.acme.dbc.dk

🔗 TLSA / DANE

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

🔐 DNSSEC96ms

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

🏷️ SOA0ms

Field	Value
Serial	2024090832
Primary NS (MNAME)	ns.dbc.dk
Responsible (RNAME)	domains@dbc.dk
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	86400s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

52ms

A

2042ms

MX

58ms

AAAA

50ms

TXT

260ms

CAA

64ms

HTTPS

52ms

TLSA

753ms

SOA

0ms

MTA-STS

65ms

DNSSEC

96ms

SRV

75ms

Total

3217ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 15:07:17	3217ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-31 06:56:44	1002ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-30 04:48:58	1490ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-29 02:50:41	1596ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-25 14:26:14	2275ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-24 14:16:53	10237ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-21 10:15:08	1302ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-20 09:34:48	10343ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-19 08:02:29	8562ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-16 22:22:22	10718ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-15 03:00:55	4758ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-13 23:00:11	2916ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-08 11:54:34	1327ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 22:07:25	1298ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-01 18:21:34	1241ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-25 22:24:51	10271ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-24 21:43:18	9021ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-23 19:24:37	1408ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-20 12:34:44	1407ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-19 07:45:32	1925ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-17 07:25:37	9414ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-16 04:08:02	1771ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 05:43:08	1260ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-11 03:08:03	1294ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 01:02:02	3098ms	2 NS 1 A 1 MX	🔒 Secure	View