`opensystemsolutions.co.uk`

DNSSEC	⚠️ Not signed
A	35.178.238.141^{🇬🇧 Amazon35.178.0.0/15 EC2 LHR prefix}
		PTR	`vps22.cloud-tree.co.uk`
NS	`ns1.ctdns.uk` ⭐
		A	35.178.51.104^{🇬🇧 Amazon35.178.0.0/15 EC2 LHR prefix}
			PTR	`ec2-35-178-51-104.eu-west-2.compute.amazonaws.com`
NS	`ns2.ctdns.uk`
		A	35.177.129.207^{🇬🇧 Amazon35.176.0.0/15 EC2 LHR prefix}
			PTR	`ec2-35-177-129-207.eu-west-2.compute.amazonaws.com`
NS	`ns3.ctdns.uk`
		A	40.122.52.50^{🇺🇸 Microsoft40.120.0.0/14}
MX	`mx01.hornetsecurity.com` ⭐
		A	94.100.132.8^{🇩🇪 MK-NETZDIENSTE-AS94.100.132.0/23 ANTISPAMEUROPE-NET via AS25394}
			PTR	`mx01.hornetsecurity.com`
MX	`mx02.hornetsecurity.com`⁽²⁰⁾
		A	94.100.136.8^{🇩🇪 SSERV-AS94.100.136.0/23 ANTISPAMEUROPE via as24679.net}
			PTR	`mx02.hornetsecurity.com`
MX	`mx03.hornetsecurity.com`⁽³⁰⁾
		A	94.100.134.8^{🇩🇪 NCORE-AS94.100.134.0/24 antispameurope GmbH via as12676}
			PTR	`mx03.hornetsecurity.com`
MX	`mx04.hornetsecurity.com`⁽⁴⁰⁾
		A	94.100.136.7^{🇩🇪 SSERV-AS94.100.136.0/23 ANTISPAMEUROPE via as24679.net}
			PTR	`mx04.hornetsecurity.com`
TXT	`v=spf1 ip4:35.178.238.141 a mx ip4:194.105.154.48 include:arrowmail.co.uk -all`
TXT	`transfer-to-cloudtree`
SOA	`ns1.ctdns.uk`admin@cloud-tree.co.uk 2026-03-27 #5

`co.uk`

	DNSSEC	⚠️ Not signed
	NS	`dns1.nic.uk` ⭐ ⚠️ Not in parent delegation
	NS	`dns2.nic.uk` ⚠️ Not in parent delegation
	NS	`dns3.nic.uk` ⚠️ Not in parent delegation
	NS	`dns4.nic.uk` ⚠️ Not in parent delegation
	NS	`nsa.nic.uk` ⚠️ Not in parent delegation
	NS	`nsb.nic.uk` ⚠️ Not in parent delegation
	NS	`nsc.nic.uk` ⚠️ Not in parent delegation
	NS	`nsd.nic.uk` ⚠️ Not in parent delegation
	SOA	`dns1.nic.uk`hostmaster@nominet.org.uk serial=1774639702

rank #171685 globally
rank #13470 in the tld
WOT: SAFE (74/100)

Subdomains

oairo.opensystemsolutions.co.uk

Same first word

opensystemsolutions.co.uk

Similar names

opensolutionsystems.com

DNS History

15 records (8 active, 7 former)

○NSns0.ukisp.com2015-05-19 → 2017-01-16 · 4 obs

● 2015-05-19 08:30:22
● 2017-01-16 03:02:50
○ 2020-01-20 16:14:52
○ 2026-03-27 19:28:50

●NSns1.ctdns.uk2020-01-20 → 2026-03-27 · 3 obs

○ 2017-01-16 03:02:50
● 2020-01-20 16:14:52
● 2026-03-27 19:28:50

○NSns1.ukisp.com2015-05-19 → 2017-01-16 · 4 obs

● 2015-05-19 08:30:22
● 2017-01-16 03:02:50
○ 2020-01-20 16:14:52
○ 2026-03-27 19:28:50

●NSns2.ctdns.uk2020-01-20 → 2026-03-27 · 3 obs

○ 2017-01-16 03:02:50
● 2020-01-20 16:14:52
● 2026-03-27 19:28:50

●NSns3.ctdns.uk2020-01-20 → 2026-03-27 · 3 obs

○ 2017-01-16 03:02:50
● 2020-01-20 16:14:52
● 2026-03-27 19:28:50

○MXfallbackmx.spamexperts.eu2020-01-20 → 2020-01-20 · 4 obs

○ 2017-01-16 03:02:50
● 2020-01-20 16:14:52
○ 2026-02-16 15:44:10
○ 2026-03-27 19:28:50

○MXlastmx.spamexperts.net2020-01-20 → 2020-01-20 · 4 obs

○ 2017-01-16 03:02:50
● 2020-01-20 16:14:52
○ 2026-02-16 15:44:10
○ 2026-03-27 19:28:50

○MXmail2.ukisp.com2015-05-19 → 2017-01-16 · 4 obs

● 2015-05-19 08:30:22
● 2017-01-16 03:02:50
○ 2020-01-20 16:14:52
○ 2026-03-27 19:28:50

○MXmx.spamexperts.com2020-01-20 → 2020-01-20 · 4 obs

○ 2017-01-16 03:02:50
● 2020-01-20 16:14:52
○ 2026-02-16 15:44:10
○ 2026-03-27 19:28:50

●MXmx01.hornetsecurity.com2026-02-16 → 2026-03-27 · 3 obs

○ 2020-01-20 16:14:52
● 2026-02-16 15:44:10
● 2026-03-27 19:28:50

●MXmx02.hornetsecurity.com2026-02-16 → 2026-03-27 · 3 obs

○ 2020-01-20 16:14:52
● 2026-02-16 15:44:10
● 2026-03-27 19:28:50

●MXmx03.hornetsecurity.com2026-02-16 → 2026-03-27 · 3 obs

○ 2020-01-20 16:14:52
● 2026-02-16 15:44:10
● 2026-03-27 19:28:50

●MXmx04.hornetsecurity.com2026-02-16 → 2026-03-27 · 3 obs

○ 2020-01-20 16:14:52
● 2026-02-16 15:44:10
● 2026-03-27 19:28:50

●A35.178.238.1412020-01-20 → 2026-03-27 · 3 obs

○ 2017-01-16 03:02:50
● 2020-01-20 16:14:52
● 2026-03-27 19:28:50

○A80.175.48.1942015-05-19 → 2017-01-16 · 4 obs

● 2015-05-19 08:30:22
● 2017-01-16 03:02:50
○ 2020-01-20 16:14:52
○ 2026-03-27 19:28:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
uk	nsa.nic.uk, nsb.nic.uk, nsc.nic.uk, nsd.nic.uk...	-
opensystemsolutions.co.uk	ns1.ctdns.uk, ns2.ctdns.uk, ns3.ctdns.uk	-

✅ Authoritative Response

Server:35.178.51.104

NS records: ns1.ctdns.uk, ns2.ctdns.uk, ns3.ctdns.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opensystemsolutions.co.uk (unsigned zone)

⏱️ Timing

Total: 2357ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`35.178.238.141`
NS	3	`ns1.ctdns.uk, ns2.ctdns.uk...`
MX	4	`mx02.hornetsecurity.com (pri: 20), mx01.hornetsecurity.com (pri: 10)...`
TXT	2	`v=spf1 ip4:35.178.238.141 a mx ip4:194.1, transfer-to-cloudtree`
SOA	1	`ns1.ctdns.uk admin.cloud-tree.co.uk`

Analysis

Hierarchy

opensystemsolutions.co.uk is parent of oairo.opensystemsolutions.co.uk.

IP Addresses

opensystemsolutions.co.uk points to a single IP: 35.178.238.141.

Other host names, for instance managementmagic.co.uk, towerhilldental.com, noblepr.co.uk, vps22.cloud-tree.co.uk and bowmantax.com share IP numbers with opensystemsolutions.co.uk.

Name Servers

opensystemsolutions.co.uk is delegated to three name servers: ns1.ctdns.uk, ns2.ctdns.uk and ns3.ctdns.uk.

opensystemsolutions.co.uk at least partially shares its name servers with other domains, for instance roamwildproducts.co.uk, dbatour.com, thegrasshopperparkstone.co.uk, chrisbarnesgardens.co.uk and cc-marine.co.uk.

Host names with one IP number:

ns1.ctdns.uk points to: 35.178.51.104.

ns2.ctdns.uk points to: 35.177.129.207.

ns3.ctdns.uk points to: 40.122.52.50.

Mail Servers

opensystemsolutions.co.uk is handled by four mail servers: mx01.hornetsecurity.com, mx02.hornetsecurity.com, mx03.hornetsecurity.com and mx04.hornetsecurity.com.

opensystemsolutions.co.uk shares some mail servers with other domains, including select-energy.pl, shop.miele.kz, aa-ha.it, cst-gmbh.org and rudspanset.at.

Host names with one IP number: mx01.hornetsecurity.com points to 94.100.132.8; mx02.hornetsecurity.com points to 94.100.136.8; mx03.hornetsecurity.com points to 94.100.134.8; mx04.hornetsecurity.com points to 94.100.136.7.

opensystemsolutions.co.uk - robtex.com