mail.sys21.com.mx - dns.ninja

`mail.sys21.com.mx`

DNSSEC	⚠️ Not signed
A	128.199.6.153^{🇺🇸 DIGITALOCEAN128.199.0.0/20 DigitalOcean}
		PTR	`server.sys21.com.mx`

`sys21.com.mx`

	DNSSEC	⚠️ Not signed
	A	128.199.6.153^{🇺🇸 DIGITALOCEAN128.199.0.0/20 DigitalOcean}
	NS	`ns1.digitalocean.com` ⭐
	NS	`ns2.digitalocean.com`
	NS	`ns3.digitalocean.com`
	SOA	`ns1.digitalocean.com`hostmaster@sys21.com.mx serial=0

Previously MX for

sys21.com.mx

Same first word

mail.com.pk

mail.hl.cn

mail.nhs.uk

mail.hotmail

mail.gov.om

mail.canon

mail.net.hk

mail.as

mail.ir

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mail.eating-organic.net

mail.ba.gov.br

mail.com

mail.inf.br

mail.4u.com

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mail.pro.br

mail.ne.jp

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mail.be

mail.com.vn

mail.how

mail.in-brb.de

mail.ro

mail.com.hk

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mail.edu.ee

mail.gouv.ci

mail.gi

mail.fr

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mail.k12.vt.us

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mail.org.br

mail.technology

mail.edu.ru

mail.edu.az

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mail.gd

mail.ms.gov.br

mail.csx.cc

mail.basicserver.io

mail.coupons

mail.js.org

mail.ch

mail.partners

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mail.golffan.us

mail.sky

mail.town

mail.sh

mail.nom.za

mail.com.br

mail.com.ph

mail.co.ua

mail.bike

mail.gr

mail.srv.br

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DNS History

2 records (1 active, 1 former)

●A128.199.6.1532026-06-10 → 2026-06-10 · 3 obs

○ 2017-01-09 15:50:14
● 2026-06-10 22:50:06
● 2026-06-10 22:50:08

○A174.127.120.302017-01-09 → 2017-01-09 · 3 obs

● 2017-01-09 15:50:14
○ 2026-06-10 22:50:06
○ 2026-06-10 22:50:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
mx	c.mx-ns.mx, e.mx-ns.mx, i.mx-ns.mx, m.mx-ns.mx...	-
sys21.com.mx	ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com	-

✅ Authoritative Response

Server:172.64.52.210

NS records: ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sys21.com.mx (unsigned zone)

⏱️ Timing

Total: 934ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`128.199.6.153`

Analysis

IP Addresses

mail.sys21.com.mx points to a single IP number: 128.199.6.153.

Other host names, for instance www.sys21.com.mx, sys21.com.mx and server.sys21.com.mx share IP numbers with mail.sys21.com.mx.