`mail.costelloengineering.com`

CNAME	`mail.jouwweb.nl`
DNSSEC	⚠️ Not signed
A	34.147.104.167^{🇳🇱 Google34.147.96.0/20}
		PTR	`167.104.147.34.bc.googleusercontent.com`
MX	`mail.jouwweb.nl` ⭐
		A	34.147.104.167^{🇳🇱 Google34.147.96.0/20}
			PTR	`167.104.147.34.bc.googleusercontent.com`
TXT	`google-site-verification=Ws6zMagadm7-y4VgUgtzvIl5N7tsD20daG0Dtxdzc4c`

`costelloengineering.com`

	DNSSEC	🔒 Signed (DS record present)
	A	35.204.150.5^{🇳🇱 Google35.204.144.0/20}
	NS	`ns1.openprovider.nl` ⭐
	NS	`ns2.openprovider.be`
	NS	`ns3.openprovider.eu`
	MX	`mail.jouwweb.nl` ⭐
	TXT	`v=spf1 include:_spf.jouwweb.nl ~all`
	SOA	`ns1.openprovider.nl`dns@openprovider.eu 2021-07-06 #1

Previously MX for

costelloengineering.com

Same first word

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DNS History

2 records (1 active, 1 former)

○A64.143.130.1702015-07-03 → 2016-07-10 · 3 obs

● 2015-07-03 04:11:48
● 2016-07-10 05:47:16
○ 2026-04-13 13:25:24

●CNAMEmail.jouwweb.nl2026-04-13 → 2026-04-13 · 1 obs

● 2026-04-13 13:25:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
costelloengineering.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: 367ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`mail.jouwweb.nl`

Analysis

IP Addresses

mail.costelloengineering.com resolves to one IP number: 34.147.104.167.

other host names including mail.jouwweb.nl, 167.104.147.34.bc.googleusercontent.com, webmail.jouwweb.nl, mail.jewellroofing.com and mail.webador.com share IP numbers with mail.costelloengineering.com.

Mail Servers

mail.costelloengineering.com is handled by a single mail server, mail.jouwweb.nl.

mail.costelloengineering.com shares the same mail server setup as other domains, for instance gravelshop.be, monkeysfit.com, kinderserviez.nl, germeraad.nl and bijpat.com.

mail.jouwweb.nl resolves to IP 34.147.104.167.

mail.costelloengineering.com - robtex.com