`iostraining.nl`

DNSSEC	⚠️ Not signed
A	37.46.140.12^{🇳🇱 CYSO-AS37.46.136.0/21 Cyso Hosting B.V. Block}
		PTR	`redirect2-sqr.cyso.net`
NS	`ns1.sqr.nl` ⭐
		A	2a01:518:ffff:4020::53:3^{🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block}
			PTR	`ns1.dns.sqr.cyso.net`
		A	109.235.73.236^{🇳🇱 CYSO-AS109.235.72.0/21 Cyso Hosting B.V. Block}
			PTR	`ns1.dns.sqr.cyso.net`
NS	`ns2.sqr.domains`
		A	2a01:518:ffff:4020::53:4^{🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block}
			PTR	`ns2.dns.sqr.cyso.net`
		A	93.94.227.166^{🇳🇱 CYSO-AS93.94.224.0/21 Cyso Hosting B.V. Block}
			PTR	`ns2.dns.sqr.cyso.net`
NS	`ns3.sqr.cloud`
		A	2a03:6000:1002:1002::54^{🇳🇱 HIGH5-NL2a03:6000::/29 High5! B.V.}
			PTR	`ns3.sqr.cloud`
		A	46.23.87.195^{🇳🇱 HIGH5-NL46.23.80.0/20 High5! B.V.}
			PTR	`ns3.sqr.cloud`
MX	`mx1.antispam-login.net` ⭐
		A	2a01:518:1:42:8::132^{🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block}
			PTR	`filter1.antispam-login.net`
		A	2a01:518:1:42:8::133^{🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block}
			PTR	`filter2.antispam-login.net`
		A	93.94.228.132^{🇳🇱 CYSO-AS93.94.224.0/21 Cyso Hosting B.V. Block}
			PTR	`filter1.antispam-login.net`
		A	93.94.228.133^{🇳🇱 CYSO-AS93.94.224.0/21 Cyso Hosting B.V. Block}
			PTR	`filter2.antispam-login.net`
MX	`mx2.antispam-login.net`⁽²⁰⁾
		A	2a01:518:1:42:8::132^{🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block}
			PTR	`filter1.antispam-login.net`
		A	2a01:518:1:42:8::133^{🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block}
			PTR	`filter2.antispam-login.net`
		A	93.94.228.132^{🇳🇱 CYSO-AS93.94.224.0/21 Cyso Hosting B.V. Block}
			PTR	`filter1.antispam-login.net`
		A	93.94.228.133^{🇳🇱 CYSO-AS93.94.224.0/21 Cyso Hosting B.V. Block}
			PTR	`filter2.antispam-login.net`
SOA	`ns1.sqr.nl`postmaster@iostraining.nl serial=1437642434

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-07-20 01:00:02 +0000 (EPOCH 1784509202)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-07-20 #2

Same first word

iostraining.nl

Similar names

isotraining.in

DNS History

12 records (6 active, 6 former)

●NSns1.sqr.nl2020-01-21 → 2026-07-20 · 3 obs

○ 2017-03-22 19:34:42
● 2020-01-21 15:22:02
● 2026-07-20 02:00:04

○NSns1.uniserver.nl2015-08-04 → 2017-03-22 · 4 obs

● 2015-08-04 17:28:56
● 2017-03-22 19:34:42
○ 2020-01-21 15:22:02
○ 2026-07-20 02:00:04

●NSns2.sqr.domains2020-01-21 → 2026-07-20 · 3 obs

○ 2017-03-22 19:34:42
● 2020-01-21 15:22:02
● 2026-07-20 02:00:04

○NSns2.uniserver.nl2015-08-04 → 2017-03-22 · 4 obs

● 2015-08-04 17:28:56
● 2017-03-22 19:34:42
○ 2020-01-21 15:22:02
○ 2026-07-20 02:00:04

●NSns3.sqr.cloud2020-01-21 → 2026-07-20 · 3 obs

○ 2017-03-22 19:34:42
● 2020-01-21 15:22:02
● 2026-07-20 02:00:04

○NSns3.uniserver.nl2015-08-04 → 2017-03-22 · 4 obs

● 2015-08-04 17:28:56
● 2017-03-22 19:34:42
○ 2020-01-21 15:22:02
○ 2026-07-20 02:00:04

○MXmx-up.uniserver.nl2015-08-04 → 2020-01-21 · 3 obs

● 2015-08-04 17:28:56
● 2020-01-21 15:22:02
○ 2026-07-20 02:00:04

●MXmx1.antispam-login.net2026-07-20 → 2026-07-20 · 2 obs

○ 2020-01-21 15:22:02
● 2026-07-20 02:00:04

●MXmx2.antispam-login.net2026-07-20 → 2026-07-20 · 2 obs

○ 2020-01-21 15:22:02
● 2026-07-20 02:00:04

○MXrelay.uniserver.nl2015-08-04 → 2020-01-21 · 3 obs

● 2015-08-04 17:28:56
● 2020-01-21 15:22:02
○ 2026-07-20 02:00:04

●A37.46.140.122026-07-20 → 2026-07-20 · 2 obs

○ 2020-01-21 15:22:02
● 2026-07-20 02:00:04

○A84.38.227.1012015-08-04 → 2020-01-21 · 3 obs

● 2015-08-04 17:28:56
● 2020-01-21 15:22:02
○ 2026-07-20 02:00:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns3.dns.nl, ns1.dns.nl, ns4.dns.nl	-
iostraining.nl	ns1.sqr.nl, ns2.sqr.domains, ns3.sqr.cloud	-

✅ Authoritative Response

Server:109.235.73.236

NS records: ns1.sqr.nl, ns2.sqr.domains, ns3.sqr.cloud

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for iostraining.nl (unsigned zone)

⏱️ Timing

Total: 2009ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.46.140.12`
NS	3	`ns3.sqr.cloud, ns1.sqr.nl...`
MX	2	`mx1.antispam-login.net (pri: 10), mx2.antispam-login.net (pri: 20)`
SOA	1	`ns1.sqr.nl postmaster.iostraining.nl`

Analysis

IP Addresses

iostraining.nl resolves to just one IP address, 37.46.140.12.

Two other host names, along with commercieelcreatief.nl, leiden-webdesign.com and izi-patentz.tv, also share IP numbers with iostraining.nl.

Name Servers

iostraining.nl has three name servers — ns3.sqr.cloud, ns2.sqr.domains and ns1.sqr.nl.

At least some of iostraining.nl's name servers are shared with other domains, for example xebiaonline.com, coursepath.me, marofra.nl and two more.

Each of ns3.sqr.cloud, ns2.sqr.domains and ns1.sqr.nl points to two IP numbers. ns3.sqr.cloud points to 46.23.87.195 and 2a03:6000:1002:1002::54. ns2.sqr.domains points to 93.94.227.166 and 2a01:518:ffff:4020::53:4. ns1.sqr.nl points to 109.235.73.236 and 2a01:518:ffff:4020::53:3.

Mail Servers

iostraining.nl is served by two mail servers, mx1.antispam-login.net and mx2.antispam-login.net.

Among the domains sharing a mail server setup with iostraining.nl are lokomotieven.nl, eraritter.nl, rieksveenker.nl and two others.

There is at least a partial MX overlap between iostraining.nl and other domains, including easpair.net, allassoprojects.com, markerquest.com and two others.

Both mx1.antispam-login.net and mx2.antispam-login.net resolve to four IP addresses: mx1.antispam-login.net points to 93.94.228.132, 93.94.228.133, 2a01:518:1:42:8::132 and 2a01:518:1:42:8::133 while mx2.antispam-login.net resolves to 93.94.228.132, 93.94.228.133, 2a01:518:1:42:8::132 and 2a01:518:1:42:8::133.