`sistemasoptimos.com`

DNSSEC	⚠️ Not signed
A	144.91.74.62^{🇩🇪 CONTABO144.91.74.0/23}
		PTR	`paul.cloudserver21.com`
NS	`md1.cloudserver21.com` ⭐
		A	144.91.74.62^{🇩🇪 CONTABO144.91.74.0/23}
			PTR	`paul.cloudserver21.com`
NS	`md2.cloudserver21.com`
		A	144.91.74.62^{🇩🇪 CONTABO144.91.74.0/23}
			PTR	`paul.cloudserver21.com`
MX	`mx2.zoho.com` ⭐
		A	204.141.33.44^{🇺🇸 ZohoAS204.141.32.0/23 PNAP-DAL CASE00103239}
MX	`mx3.zoho.com`⁽²⁰⁾
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
		A	204.141.33.44^{🇺🇸 ZohoAS204.141.32.0/23 PNAP-DAL CASE00103239}
TXT	`v=spf1 include:zohomail.com ~all`
SOA	`md1.cloudserver21.com`whm@hostingcode.net 2026-03-15 #1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1777493491

Same first word

sistemasoptimos.com

DNS History

14 records (6 active, 8 former)

●NSmd1.cloudserver21.com2026-02-21 → 2026-04-29 · 3 obs

○ 2020-01-13 16:10:30
● 2026-02-21 06:04:36
● 2026-04-29 20:22:10

●NSmd2.cloudserver21.com2026-02-21 → 2026-04-29 · 3 obs

○ 2020-01-13 16:10:30
● 2026-02-21 06:04:36
● 2026-04-29 20:22:10

○NSns1.maximunasp.com2015-06-22 → 2016-06-20 · 4 obs

● 2015-06-22 23:58:58
● 2016-06-20 18:37:44
○ 2017-03-20 20:56:48
○ 2026-04-29 20:22:10

○NSns2.maximunasp.com2015-06-22 → 2016-06-20 · 4 obs

● 2015-06-22 23:58:58
● 2016-06-20 18:37:44
○ 2017-03-20 20:56:48
○ 2026-04-29 20:22:10

○NSns29.domaincontrol.com2015-06-22 → 2020-01-13 · 4 obs

● 2015-06-22 23:58:58
● 2020-01-13 16:10:30
○ 2026-02-21 06:04:36
○ 2026-04-29 20:22:10

○NSns30.domaincontrol.com2015-06-22 → 2020-01-13 · 4 obs

● 2015-06-22 23:58:58
● 2020-01-13 16:10:30
○ 2026-02-21 06:04:36
○ 2026-04-29 20:22:10

○MXmail.sistemasoptimos.com2015-06-22 → 2017-03-20 · 4 obs

● 2015-06-22 23:58:58
● 2017-03-20 20:56:48
○ 2020-01-13 16:10:30
○ 2026-04-29 20:22:10

○MXmailstore1.secureserver.net2020-01-13 → 2020-01-13 · 4 obs

○ 2017-03-20 20:56:48
● 2020-01-13 16:10:30
○ 2026-02-21 06:04:36
○ 2026-04-29 20:22:10

●MXmx.zoho.com2026-02-21 → 2026-04-29 · 3 obs

○ 2020-01-13 16:10:30
● 2026-02-21 06:04:36
● 2026-04-29 20:22:10

●MXmx2.zoho.com2026-02-21 → 2026-04-29 · 3 obs

○ 2020-01-13 16:10:30
● 2026-02-21 06:04:36
● 2026-04-29 20:22:10

●MXmx3.zoho.com2026-02-21 → 2026-04-29 · 3 obs

○ 2020-01-13 16:10:30
● 2026-02-21 06:04:36
● 2026-04-29 20:22:10

○MXsmtp.secureserver.net2020-01-13 → 2020-01-13 · 4 obs

○ 2017-03-20 20:56:48
● 2020-01-13 16:10:30
○ 2026-02-21 06:04:36
○ 2026-04-29 20:22:10

●A144.91.74.622026-02-21 → 2026-04-29 · 3 obs

○ 2020-01-13 16:10:30
● 2026-02-21 06:04:36
● 2026-04-29 20:22:10

○A192.254.161.1062015-06-22 → 2020-01-13 · 4 obs

● 2015-06-22 23:58:58
● 2020-01-13 16:10:30
○ 2026-02-21 06:04:36
○ 2026-04-29 20:22:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net...	-
sistemasoptimos.com	md1.cloudserver21.com, md2.cloudserver21.com	2 records

✅ Authoritative Response

Server:144.91.74.62

NS records: md1.cloudserver21.com, md2.cloudserver21.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sistemasoptimos.com (unsigned zone)

⏱️ Timing

Total: 1059ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`144.91.74.62`
NS	2	`md2.cloudserver21.com, md1.cloudserver21.com`
MX	3	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 20)...`
TXT	1	`v=spf1 include:zohomail.com ~all`
SOA	1	`md1.cloudserver21.com whm.hostingcode.ne`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (md1.cloudserver21.com, md2.cloudserver21.com)

Analysis

IP Addresses

sistemasoptimos.com points to a single IP number: 144.91.74.62.

Other host names, for instance hidroserviciossv.com, sebastian.directossorteo.com, grupomeridian.com.mx, tupanet.com and angelguardiancr.com share IP numbers with sistemasoptimos.com.

Name Servers

Delegation for sistemasoptimos.com rests with two name servers, md1.cloudserver21.com and md2.cloudserver21.com.

sistemasoptimos.com shares the same name server setup as other domains, including gaselag.com, sanutsfc.com, jsplogisticaimportexport.com, aspedc.com and totalsac.com.

sistemasoptimos.com partially shares name servers with other domains; for instance accsolec.org and zonebin.com.

These name servers are commonly used with ns501.admeli.com and ns502.admeli.com.

Host names sharing a single IP:

md1.cloudserver21.com points to 144.91.74.62

md2.cloudserver21.com points to 144.91.74.62

Host names that point to 144.91.74.62: md1.cloudserver21.com and md2.cloudserver21.com

Mail Servers

sistemasoptimos.com is handled by three mail servers: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

sistemasoptimos.com shares mail servers with other domains at least in part, for instance estudopratico.com.br, veraqua.co.jp, gogreencarrybags.com, aacademy.co.nz and thailandsnus.com.

Host names with two IP numbers:

The host name mx.zoho.com points to: 136.143.191.44 and 204.141.33.44.

Host names with one IP number:

The host name mx2.zoho.com points to: 204.141.33.44.

The host name mx3.zoho.com points to: 136.143.191.44.

Host names that point to 136.143.191.44 : mx.zoho.com and mx3.zoho.com.

Host names that point to 204.141.33.44 : mx.zoho.com and mx2.zoho.com.

sistemasoptimos.com - robtex.com