codejudge.dk DNS records

🖥️ Nameservers2 records 35ms

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 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.97.195.129	600s	—	AS8075	Microsoft Corporation	23.96.0.0/14	🇳🇱 The Netherlands	Amsterdam

📧 MX Records4 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	in1-smtp.messagingengine.com	103.168.172.216 103.168.172.217 103.168.172.218 103.168.172.219 103.168.172.220 103.168.172.221 103.168.172.222 103.168.172.223	phl-mx-01.messagingengine.com phl-mx-02.messagingengine.com phl-mx-03.messagingengine.com phl-mx-04.messagingengine.com phl-mx-05.messagingengine.com phl-mx-06.messagingengine.com phl-mx-07.messagingengine.com phl-mx-08.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd
20	600s	in2-smtp.messagingengine.com	202.12.124.216 202.12.124.217 202.12.124.218 202.12.124.219	stl-mx-01.messagingengine.com stl-mx-02.messagingengine.com stl-mx-03.messagingengine.com stl-mx-04.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd
25	600s	mx1.forwardemail.net	121.127.44.56 138.197.213.185 2604:a880:2:d0::306:1 2a02:6ea0:d71e::2	mx1.forwardemail.net mx1.forwardemail.net mx1.forwardemail.net mx1.forwardemail.net	AS60068 Datacamp Limited AS14061 DigitalOcean, LLC AS14061 DigitalOcean, LLC AS60068 Datacamp Limited
30	600s	mx2.forwardemail.net	104.248.224.170 121.127.44.59 2604:a880:400:d1::cd:9001 2a02:6ea0:d71e::1	mx2.forwardemail.net mx2.forwardemail.net mx2.forwardemail.net mx2.forwardemail.net	AS14061 DigitalOcean, LLC AS60068 Datacamp Limited AS14061 DigitalOcean, LLC AS60068 Datacamp Limited

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	23.97.195.129
🔶 Autoconfig	23.97.195.129

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 212ms

TXT Record
forward-email=anders.r0x3r@gmail.com
MS=FBAA7A80B2B0886C99DF2782915D7B9291D677E6
v=spf1 include:spf.messagingengine.com include:eu.mailgun.org include:_spf.google.com include:spf.forwardemail.net ~all

✉️ SPF

Policy	Record (codejudge.dk)
~all (soft fail)	v=spf1 include:spf.messagingengine.com include:eu.mailgun.org include:_spf.google.com include:spf.forwardemail.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 Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE2 records 343ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.forwardemail.net	DANE-EE · SPKI · SHA-256	5E81DA1AF16DF20B13E667AD6D9C2B65…
SMTP _25._tcp.mx2.forwardemail.net	DANE-EE · SPKI · SHA-256	5E81DA1AF16DF20B13E667AD6D9C2B65…

🔐 DNSSEC70ms

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

🏷️ SOA32ms

Field	Value
Serial	2026032401
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

35ms

A

48ms

MX

56ms

AAAA

36ms

TXT

212ms

CAA

38ms

HTTPS

32ms

TLSA

343ms

SOA

32ms

MTA-STS

45ms

DNSSEC

70ms

SRV

59ms

Total

1267ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-01 15:51:34	732ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-30 15:42:40	5749ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-28 17:15:35	761ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-27 11:03:04	834ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-26 10:49:46	8548ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-25 10:34:32	868ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-24 10:03:56	744ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-23 09:44:02	784ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-22 01:31:20	8700ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-20 20:03:25	8801ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-19 15:29:15	744ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-18 10:19:06	901ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-16 13:40:53	8572ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-15 05:57:53	8613ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-09 05:16:09	936ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-05 19:58:57	1243ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-04 18:21:20	883ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-03 10:56:02	4468ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-06-29 01:31:30	1267ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-16 21:46:30	701ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-16 21:40:05	1628ms	2 NS 1 A 4 MX	🔒 Secure	View