`mail.challenges4u.com`

	DNSSEC	⚠️ Not signed
	A	127.0.0.1

`challenges4u.com`

	DNSSEC	🔒 Signed (DS record present)
	A	127.0.0.1
	NS	`ns1.openprovider.nl` ⭐
	NS	`ns2.openprovider.be`
	NS	`ns3.openprovider.eu`
	MX	`mail.challenges4u.com` ⭐
	SOA	`ns1.openprovider.nl`dns@openprovider.eu 2023-12-09 #1

MX for

challenges4u.com

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DNS History

1 record (1 active, 0 former)

●A127.0.0.12026-04-17 → 2026-05-10 · 4 obs

● 2026-04-17 17:36:00
○ 2026-04-18 04:53:28
● 2026-04-21 19:00:16
● 2026-05-10 04:14:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, k.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net...	-
challenges4u.com	ns1.openprovider.nl, ns3.openprovider.eu, ns2.openprovider.be	-

✅ Authoritative Response

Server:162.159.26.10

NS records: ns1.openprovider.nl, ns3.openprovider.eu, ns2.openprovider.be

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 856ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`127.0.0.1`

Analysis

Mail Server Role

mail.challenges4u.com functions as a mail server for challenges4u.com.

IP Addresses

mail.challenges4u.com points to IP number: 127.0.0.1.

Other host names such as 129.16.152.static.quadranet.com, petalista.com, 44.178.6.static.quadranet.com, flowell.rest and localhost.dev2.exct.net share IPs with mail.challenges4u.com.

mail.challenges4u.com - robtex.com