`mx-backup.custos.es`

DNSSEC	⚠️ Not signed
A	212.34.158.243^{🇪🇸 AXARNET-AS212.34.156.0/22}
		PTR	`kepler.b2n.org`

`custos.es`

	DNSSEC	⚠️ Not signed
	A	185.150.100.34^{🇪🇸 CUSTOS-AS185.150.100.0/24}
	NS	`nsa.custos.es` ⭐
	NS	`nsb.custos.es`
	NS	`nsc.custosmessium.com`
	NS	`nsd.custos.es`
	NS	`nso.nic.es`
	MX	`mxplanb.custos.es` ⭐
	MX	`plank.b2n.org` ⭐
	TXT	`v=spf1 mx mx:mail3.custos.es ip4:5.2.90.130 ip4:185.150.100.0/23 ip4:185.150....`
	TXT	`openai-domain-verification=dv-wbDzscLeJlfP2CTaaflDcXFC`
	SOA	`nsa.custos.es`hostmaster@custos.es 2026-05-20 #2

📈 Tranco rank: #425,178

Same first word

mx-backup.nl

mx-backup.de

mx-backup.co.uk

Similar names

backup-mx.de

backup-mx.net

backup-mx.dk

backup-mx.org

backup-mx.com

DNS History

1 record (1 active, 0 former)

●A212.34.158.2432015-06-22 → 2026-08-14 · 2 obs

● 2015-06-22 03:58:18
● 2026-08-14 08:32:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
es	a.nic.es, c.nic.es, g.nic.es, h.nic.es	-
custos.es	nso.nic.es, nsc.custosmessium.com, nsd.custos.es, nsa.custos.es...	4 records

✅ Authoritative Response

Server:185.150.100.19

NS records: nso.nic.es, nsc.custosmessium.com, nsd.custos.es, nsa.custos.es, nsb.custos.es

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for custos.es (unsigned zone)

⏱️ Timing

Total: 2452ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`212.34.158.243`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (nsa.custos.es, nsd.custos.es, nsb.custos.es...)

Analysis

IP Addresses

mx-backup.custos.es has exactly one IP address — 212.34.158.243.

ns1.custos.es, tesla.b2n.org, kepler.b2n.org plus two other host names have IP numbers in common with mx-backup.custos.es.

mx-backup.custos.es - robtex.com