cosopt.dk DNS records

🖥️ Nameservers7 records 4032ms

Nameserver	IP addresses	PTR	ASN / ISP
att.isc-sns.com	—	—	—
att.isc-sns.info	—	—	—
att.isc-sns.net	—	—	—
cbru.br.ns.els-gms.att.net	2001:1890:1ff:9f0:68:94:156:132 68.94.156.132	cbru.br.ns.els-gms.att.net cbru.br.ns.els-gms.att.net	AS7018 AT&T Enterprises, LLC AS7018 AT&T Enterprises, LLC
cmtu.mt.ns.els-gms.att.net	2001:1890:1ff:9f1:99:99:99:132 99.99.99.132	cmtu.mt.ns.els-gms.att.net cmtu.mt.ns.els-gms.att.net	AS7018 AT&T Enterprises, LLC AS7018 AT&T Enterprises, LLC
ns6.customer.level3.net	209.244.4.85	ns6.customer.level3.net	AS3356 Level 3 Parent, LLC
ns9.customer.level3.net	209.244.4.148	ns9.customer.Level3.net	AS3356 Level 3 Parent, LLC

🌍 A Records

🌍

No A records found

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records

📝

No TXT records found

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 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)

🔐 DNSSEC10173ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: timed out

🏷️ SOA

✗ No SOA record found

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

4032ms

A

4039ms

MX

4036ms

AAAA

4048ms

TXT

20172ms

CAA

4039ms

HTTPS

4037ms

TLSA

4029ms

SOA

4087ms

MTA-STS

4057ms

DNSSEC

10173ms

SRV

4081ms

Total

40654ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 13:09:29	40654ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-23 16:45:21	31707ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-22 14:21:46	34705ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-21 13:30:26	57154ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-20 13:00:07	33281ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-19 05:12:12	50340ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-18 04:39:18	38918ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-17 02:41:36	38461ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-15 19:08:18	36762ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-14 10:55:46	42349ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-11 21:21:08	41935ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-09 17:48:04	37020ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-08 16:29:01	36767ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-08-07 14:51:31	36519ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-29 07:53:29	40853ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-28 00:37:20	42153ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-27 00:11:42	41844ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-25 23:38:10	39267ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-24 23:13:36	38103ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-23 21:43:29	39449ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-22 20:47:14	30135ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-21 20:02:29	48531ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-20 12:52:17	35043ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-19 12:15:54	47240ms	7 NS 0 A 0 MX	❓ Unknown	View
2026-07-18 06:56:55	36972ms	7 NS 0 A 0 MX	❓ Unknown	View