`holterman.com`

DNSSEC	🔒 Signed (DS record present)
A	46.17.8.90^{🇳🇱 GLOBAL-E46.17.8.0/22 Ospito B.V.}
		PTR	`venice.ospito.nl`
NS	`ns1.ospito.nl` ⭐
		A	2a02:2870:1:106:46:17:8:250^{🇳🇱 GLOBAL-E2a02:2870::/33 Ospito B.V.}
			PTR	`ns1.ospito.nl`
		A	46.17.8.250^{🇳🇱 GLOBAL-E46.17.8.0/22 Ospito B.V.}
			PTR	`ns1.ospito.nl`
NS	`ns2.ospito.net`
		A	2a02:2870:c002:1::11^{🇳🇱 LEASEWEB-NL-AMS-012a02:2870:8000::/33 Ospito B.V.}
			PTR	`ns2.ospito.net`
		A	46.17.15.250^{🇳🇱 LEASEWEB-NL-AMS-0146.17.14.0/23 Ospito B.V.}
			PTR	`ns2.ospito.net`
NS	`ns3.ospito.eu`
		A	2a02:2870:c002:2::11^{🇳🇱 LEASEWEB-NL-AMS-012a02:2870:8000::/33 Ospito B.V.}
			PTR	`ns3.ospito.eu`
		A	46.17.14.250^{🇳🇱 LEASEWEB-NL-AMS-0146.17.14.0/23 Ospito B.V.}
			PTR	`ns3.ospito.eu`
MX	`mail.holterman.com` ⭐
		A	46.17.8.90^{🇳🇱 GLOBAL-E46.17.8.0/22 Ospito B.V.}
			PTR	`venice.ospito.nl`
MX	`fallback1.holterman.com`⁽²⁰⁾
		A	2a02:2870:1:106:46:17:8:251^{🇳🇱 GLOBAL-E2a02:2870::/33 Ospito B.V.}
			PTR	`fallback1.ospito.nl`
		A	46.17.8.251^{🇳🇱 GLOBAL-E46.17.8.0/22 Ospito B.V.}
			PTR	`fallback1.ospito.nl`
MX	`fallback2.holterman.com`⁽³⁰⁾
		A	2a02:2870:c002:1::12^{🇳🇱 LEASEWEB-NL-AMS-012a02:2870:8000::/33 Ospito B.V.}
			PTR	`fallback2.ospito.net`
		A	46.17.15.251^{🇳🇱 LEASEWEB-NL-AMS-0146.17.14.0/23 Ospito B.V.}
			PTR	`fallback2.ospito.net`
MX	`fallback3.holterman.com`⁽⁴⁰⁾
		A	2a02:2870:c002:2::12^{🇳🇱 LEASEWEB-NL-AMS-012a02:2870:8000::/33 Ospito B.V.}
			PTR	`fallback3.ospito.eu`
		A	46.17.14.251^{🇳🇱 LEASEWEB-NL-AMS-0146.17.14.0/23 Ospito B.V.}
			PTR	`fallback3.ospito.eu`
TXT	`v=spf1 a mx ip4:46.17.8.90 include:_spf.exactonline.nl -all`
SOA	`ns1.ospito.nl`hostmaster@holterman.com 2026-07-05 #4

`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=1785143692

Previously MX for

holterman.com

mail.holterman.com

Subdomains

fallback2.holterman.com

mail.holterman.com

fallback1.holterman.com

fallback3.holterman.com

Same first word

holterman.com

holterman.org

holterman.eu

holterman.de

Similar names

DNS History

23 records (8 active, 15 former)

●NSns1.ospito.nl2026-07-20 → 2026-07-27 · 3 obs

○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

○NSns1.proserve.nl2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 16:17:42
○ 2015-07-26 01:42:32
○ 2026-07-27 09:26:38

●NSns2.ospito.net2026-07-20 → 2026-07-27 · 3 obs

○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

○NSns2.pro-serve.be2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 16:17:42
○ 2015-07-26 01:42:32
○ 2026-07-27 09:26:38

●NSns3.ospito.eu2026-07-20 → 2026-07-27 · 3 obs

○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

○NSns3.proserve.nl2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 16:17:42
○ 2015-07-26 01:42:32
○ 2026-07-27 09:26:38

○NSrict-vhsrv1.rijnmondict.nl2015-07-26 → 2017-05-24 · 5 obs

○ 2007-10-23 16:17:42
● 2015-07-26 01:42:32
● 2017-05-24 12:56:28
○ 2021-05-18 15:46:00
○ 2026-07-27 09:26:38

○NSrict-vhsrv2.rijnmondnetwork.nl2015-07-26 → 2016-01-21 · 5 obs

○ 2007-10-23 16:17:42
● 2015-07-26 01:42:32
● 2016-01-21 22:35:10
○ 2016-03-16 03:21:58
○ 2026-07-27 09:26:38

○NSrict-vhsrv3.rijnmondict.nl2015-07-26 → 2017-05-24 · 5 obs

○ 2007-10-23 16:17:42
● 2015-07-26 01:42:32
● 2017-05-24 12:56:28
○ 2021-05-18 15:46:00
○ 2026-07-27 09:26:38

○NSrict-vhsrv5.rijnmondict.nl2016-03-16 → 2017-05-24 · 5 obs

○ 2016-01-21 22:35:10
● 2016-03-16 03:21:58
● 2017-05-24 12:56:28
○ 2021-05-18 15:46:00
○ 2026-07-27 09:26:38

○NSsrv3.rict.host2021-05-18 → 2021-05-18 · 4 obs

○ 2017-05-24 12:56:28
● 2021-05-18 15:46:00
○ 2026-07-20 13:56:56
○ 2026-07-27 09:26:38

○NSsrv4.rict.host2021-05-18 → 2021-05-18 · 4 obs

○ 2017-05-24 12:56:28
● 2021-05-18 15:46:00
○ 2026-07-20 13:56:56
○ 2026-07-27 09:26:38

●MXfallback1.holterman.com2026-07-20 → 2026-07-27 · 3 obs

○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

●MXfallback2.holterman.com2026-07-20 → 2026-07-27 · 3 obs

○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

●MXfallback3.holterman.com2026-07-20 → 2026-07-27 · 3 obs

○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

○MXholterman.com2015-07-26 → 2021-05-18 · 5 obs

○ 2007-10-23 16:17:42
● 2015-07-26 01:42:32
● 2021-05-18 15:46:00
○ 2026-07-20 13:56:56
○ 2026-07-27 09:26:38

●MXmail.holterman.com2007-10-23 → 2026-07-27 · 5 obs

● 2007-10-23 16:17:42
○ 2015-07-26 01:42:32
○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

○A2a01:7c8:fffa:347:1::152021-05-18 → 2021-05-18 · 4 obs

○ 2017-05-24 12:56:28
● 2021-05-18 15:46:00
○ 2026-07-20 13:56:56
○ 2026-07-27 09:26:38

○A37.97.159.1202016-03-16 → 2017-05-24 · 5 obs

○ 2016-01-21 22:35:10
● 2016-03-16 03:21:58
● 2017-05-24 12:56:28
○ 2021-05-18 15:46:00
○ 2026-07-27 09:26:38

○A37.97.251.542021-05-18 → 2021-05-18 · 4 obs

○ 2017-05-24 12:56:28
● 2021-05-18 15:46:00
○ 2026-07-20 13:56:56
○ 2026-07-27 09:26:38

●A46.17.8.902026-07-20 → 2026-07-27 · 3 obs

○ 2021-05-18 15:46:00
● 2026-07-20 13:56:56
● 2026-07-27 09:26:38

○A77.60.77.2322015-07-26 → 2016-01-21 · 5 obs

○ 2007-10-23 16:17:42
● 2015-07-26 01:42:32
● 2016-01-21 22:35:10
○ 2016-03-16 03:21:58
○ 2026-07-27 09:26:38

○A83.96.135.152007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 16:17:42
○ 2015-07-26 01:42:32
○ 2026-07-27 09:26:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
holterman.com	ns2.ospito.net, ns1.ospito.nl, ns3.ospito.eu	-

✅ Authoritative Response

Server:46.17.15.250

NS records: ns2.ospito.net, ns1.ospito.nl, ns3.ospito.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 862ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`46.17.8.90`
NS	3	`ns1.ospito.nl, ns3.ospito.eu...`
MX	4	`fallback1.holterman.com (pri: 20), fallback3.holterman.com (pri: 40)...`
TXT	1	`v=spf1 a mx ip4:46.17.8.90 include:_spf.`
SOA	1	`ns1.ospito.nl hostmaster.holterman.com`

Analysis

Hierarchy

The domain holterman.com is a parent of fallback2.holterman.com, mail.holterman.com, fallback1.holterman.com and fallback3.holterman.com.

IP Addresses

holterman.com points to a single IP number: 46.17.8.90.

Additional host names — nederlandseinstallatiemaatschappij.nl, mail.vlrymusic.com, mail.keesvandeveen.nl and two others — share IP numbers with holterman.com.

Name Servers

holterman.com is served by three name servers: ns3.ospito.eu, ns2.ospito.net and ns1.ospito.nl.

At least some of holterman.com's name servers are shared with other domains, for example stevenvandenbrink.nl, fotomelchior.nl, targetcoach.nl and two more.

The hostnames ns3.ospito.eu, ns2.ospito.net and ns1.ospito.nl each direct to two IP addresses — ns3.ospito.eu to 46.17.14.250 and 2a02:2870:c002:2::11, ns2.ospito.net to 46.17.15.250 and 2a02:2870:c002:1::11, and ns1.ospito.nl to 46.17.8.250 and 2a02:2870:1:106:46:17:8:250.

Mail Servers

The four mail servers for holterman.com are fallback1.holterman.com, fallback2.holterman.com, fallback3.holterman.com and mail.holterman.com.

Host names with two IP numbers:

The A records for fallback1.holterman.com return 46.17.8.251 and 2a02:2870:1:106:46:17:8:251.

The A records for fallback2.holterman.com return 46.17.15.251 and 2a02:2870:c002:1::12.

The A records for fallback3.holterman.com return 46.17.14.251 and 2a02:2870:c002:2::12.

Host names pointing to a single IP address:

mail.holterman.com resolves to the IP address 46.17.8.90.

holterman.com - robtex.com

holterman.com

com

Previously MX for

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`holterman.com`

`com`