`ohisystems.com`

DNSSEC	⚠️ Not signed
A	3.131.150.69^{🇺🇸 Amazon3.131.0.0/16 EC2 CMH prefix}
		PTR	`ec2-3-131-150-69.us-east-2.compute.amazonaws.com`
NS	`ns1.dnsimple.com` ⭐
		A	2400:cb00:2049:1::a29f:1804^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns1.dnsimple.com`
		A	162.159.24.4^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.dnsimple.com`
NS	`ns2.dnsimple-edge.net`
		A	2620:111:8005::53^{🇺🇸 AS327712620:111:8005::/48 Vultr Customer Route}
		A	199.247.153.53^{🇺🇸 AS32771199.247.153.0/24 Vultr Customer Route}
NS	`ns3.dnsimple.com`
		A	2400:cb00:2049:1::a29f:1a04^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns3.dnsimple.com`
		A	162.159.26.4^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.dnsimple.com`
NS	`ns4.dnsimple-edge.org`
		A	2620:111:8007::53^{🇺🇸 AS327712620:111:8007::/48 Vultr Customer Route}
		A	199.247.155.53^{🇺🇸 AS32771199.247.155.0/24 Vultr Customer Route}
MX	`ohisystems-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c922::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr02cu00702.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch0pr04cu00504.inbound.protection.outlook.com`
		A	2a01:111:f403:f901::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl2pr02cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:f90d::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr0501cu00301.inbound.protection.outlook.com`
		A	52.101.9.17^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`ip-52-101-9-17.defastlink.net`
		A	52.101.40.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy5pr03cu00204.inbound.protection.outlook.com`
		A	52.101.41.58^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr02cu00102.inbound.protection.outlook.com`
		A	52.101.194.15^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch4pr21cu00107.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`MS=ms47227176`
SOA	`ns1.dnsimple.com`admin@dnsimple.com serial=1773009072

`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=1771291435

Subdomains

www.ohisystems.com

mail.ohisystems.com

Same first word

ohisystems.com

Similar names

sohisystem.com

oshisystem.xyz

DNS History

24 records (6 active, 18 former)

○NSdns.tic.ab.ca2007-12-06 → 2007-12-06 · 3 obs

● 2007-12-06 11:57:40
○ 2015-08-01 03:01:08
○ 2026-03-23 20:58:02

●NSns1.dnsimple.com2026-03-23 → 2026-03-23 · 3 obs

○ 2016-12-06 12:57:50
● 2026-03-23 20:58:00
● 2026-03-23 20:58:02

○NSns1.mydyndns.org2015-08-01 → 2016-12-06 · 5 obs

○ 2007-12-06 11:57:40
● 2015-08-01 03:01:08
● 2016-12-06 12:57:50
○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○NSns1.name.com2026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○NSns1182.dns.dyn.com2015-08-01 → 2016-12-06 · 5 obs

○ 2007-12-06 11:57:40
● 2015-08-01 03:01:08
● 2016-12-06 12:57:50
○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○NSns1stv.name.com2026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

●NSns2.dnsimple-edge.net2026-03-23 → 2026-03-23 · 3 obs

○ 2016-12-06 12:57:50
● 2026-03-23 20:58:00
● 2026-03-23 20:58:02

○NSns2170.dns.dyn.com2015-08-01 → 2016-12-06 · 5 obs

○ 2007-12-06 11:57:40
● 2015-08-01 03:01:08
● 2016-12-06 12:57:50
○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○NSns2clp.name.com2026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

●NSns3.dnsimple.com2026-03-23 → 2026-03-23 · 3 obs

○ 2016-12-06 12:57:50
● 2026-03-23 20:58:00
● 2026-03-23 20:58:02

○NSns3183.dns.dyn.com2015-08-01 → 2016-12-06 · 5 obs

○ 2007-12-06 11:57:40
● 2015-08-01 03:01:08
● 2016-12-06 12:57:50
○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○NSns3cgw.name.com2026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

●NSns4.dnsimple-edge.org2026-03-23 → 2026-03-23 · 3 obs

○ 2016-12-06 12:57:50
● 2026-03-23 20:58:00
● 2026-03-23 20:58:02

○NSns4144.dns.dyn.com2015-08-01 → 2016-12-06 · 5 obs

○ 2007-12-06 11:57:40
● 2015-08-01 03:01:08
● 2016-12-06 12:57:50
○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○NSns4kmw.name.com2026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○NSweb.hstone.com2007-12-06 → 2007-12-06 · 3 obs

● 2007-12-06 11:57:40
○ 2015-08-01 03:01:08
○ 2026-03-23 20:58:02

○MXmail.ohisystems.com2007-12-06 → 2016-12-06 · 4 obs

● 2007-12-06 11:57:40
● 2016-12-06 12:57:50
○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○MXmail.pickelhost.com2026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○MXmail2.ohisystems.com2015-08-01 → 2015-08-01 · 4 obs

○ 2007-12-06 11:57:40
● 2015-08-01 03:01:08
○ 2015-12-02 19:42:34
○ 2026-03-23 20:58:02

●MXohisystems-com.mail.protection.outlook.com2026-03-23 → 2026-03-23 · 3 obs

○ 2016-12-06 12:57:50
● 2026-03-23 20:58:00
● 2026-03-23 20:58:02

●A3.131.150.692026-03-23 → 2026-03-23 · 3 obs

○ 2016-12-06 12:57:50
● 2026-03-23 20:58:00
● 2026-03-23 20:58:02

○A68.148.96.2232007-12-06 → 2007-12-06 · 3 obs

● 2007-12-06 11:57:40
○ 2015-08-01 03:01:08
○ 2026-03-23 20:58:02

○A91.195.240.942026-03-23 → 2026-03-23 · 2 obs

○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

○A96.53.106.2422015-08-01 → 2016-12-06 · 5 obs

○ 2007-12-06 11:57:40
● 2015-08-01 03:01:08
● 2016-12-06 12:57:50
○ 2026-03-23 20:58:00
○ 2026-03-23 20:58:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, f.gtld-servers.net, m.gtld-servers.net, d.gtld-servers.net...	-
ohisystems.com	ns1.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple-edge.org, ns2.dnsimple-edge.net	4 records

✅ Authoritative Response

Server:162.159.24.4

NS records: ns1.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple-edge.org, ns2.dnsimple-edge.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ohisystems.com (unsigned zone)

⏱️ Timing

Total: 660ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.131.150.69`
NS	4	`ns1.dnsimple.com, ns2.dnsimple-edge.net...`
MX	1	`ohisystems-com.mail.protection.outlook.c`
TXT	2	`v=spf1 include:spf.protection.outlook.co, MS=ms47227176`
SOA	1	`ns1.dnsimple.com admin.dnsimple.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.dnsimple.com, ns1.dnsimple.com, ns3.dnsimple.com...)

Analysis

Hierarchy

ohisystems.com is a parent of www.ohisystems.com and mail.ohisystems.com.

IP Addresses

ohisystems.com points to a single IP number: 3.131.150.69.

Other host names, for instance octopus.design, ableag.org, cykeltours.se, nurseforce.com and cuttime.net share IP numbers with ohisystems.com.

Name Servers

ohisystems.com is delegated to four name servers: ns1.dnsimple.com, ns3.dnsimple.com, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org.

ohisystems.com at least partially shares name servers with other domains, for instance cosjc.org, a2wedding.info, codaplus.com, gitimmersion.com and venno.com.

These name servers are commonly used with ns2.dnsimple.com and ns4.dnsimple.com.

Host names with two IP numbers:

ns1.dnsimple.com points to: 2400:cb00:2049:1::a29f:1804 and 162.159.24.4.

ns3.dnsimple.com points to: 2400:cb00:2049:1::a29f:1a04 and 162.159.26.4.

ns2.dnsimple-edge.net points to: 2620:111:8005::53 and 199.247.153.53.

ns4.dnsimple-edge.org points to: 2620:111:8007::53 and 199.247.155.53.

Mail Servers

ohisystems.com is handled by a single mail server, ohisystems-com.mail.protection.outlook.com.

ohisystems-com.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:c922::2, 2a01:111:f403:c946::4, 2a01:111:f403:f901::2, 2a01:111:f403:f90d::1, 52.101.9.17, 52.101.40.4, 52.101.41.58 and 52.101.194.15.

ohisystems.com - robtex.com

ohisystems.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`ohisystems.com`

`com`