mastersofbusiness.nl - dns.ninja

`mastersofbusiness.nl`

DNSSEC	⚠️ Not signed
A	178.62.223.145^{🇳🇱 DIGITALOCEAN178.62.192.0/18 DigitalOcean}
		PTR	`do-psa1.nextbuzz.nl`
NS	`ns1.nextbuzz.nl` ⭐
		A	178.62.223.145^{🇳🇱 DIGITALOCEAN178.62.192.0/18 DigitalOcean}
			PTR	`do-psa1.nextbuzz.nl`
NS	`ns2.nextbuzz.nl`
		A	2a03:b0c0:2:f0::202:7001^{🇳🇱 DIGITALOCEAN2a03:b0c0:2::/48 DigitalOcean}
			PTR	`ns2.nextbuzz.nl`
		A	64.227.74.163^{🇳🇱 DIGITALOCEAN64.227.64.0/20 DigitalOcean}
			PTR	`ns2.nextbuzz.nl`
NS	`ns3.nextbuzz.nl`
		A	2604:a880:800:14::3:c000^{🇺🇸 DIGITALOCEAN2604:a880:800::/48 DigitalOcean}
			PTR	`ns3.nextbuzz.nl`
		A	104.131.36.21^{🇺🇸 DIGITALOCEAN104.131.0.0/18 DigitalOcean}
			PTR	`ns3.nextbuzz.nl`
MX	`mx.spamexperts.com` ⭐
		A	2001:550:2:78::ca:100^{🇺🇸 COGENT2001:550::/32 Cogent Communications}
			PTR	`fe3-r2-in.atl06.l.antispamcloud.com`
		A	38.89.254.156^{🇺🇸 AS1663338.89.254.0/23}
			PTR	`fe1-r2-in.ch03.l.antispamcloud.com`
MX	`lastmx.spamexperts.net`⁽⁵⁰⁾
		A	2001:550:2:3::62:100^{🇺🇸 COGENT2001:550::/32 Cogent Communications}
			PTR	`fe2-r2-in.la10.l.antispamcloud.com`
		A	2001:550:2:61::2fc:100^{🇺🇸 COGENT2001:550::/32 Cogent Communications}
		A	2001:978:2:7::162:100^{🇩🇪 COGENT2001:978::/32 C.C.D. Cogent Communications Deutschland GmbH}
			PTR	`fe1-r3-in.fra02.l.antispamcloud.com`
		A	2001:978:2:2c::137:100^{🇳🇱 COGENT2001:978::/32 C.C.D. Cogent Communications Deutschland GmbH}
			PTR	`fe2-r3-in.ams14.l.antispamcloud.com`
		A	38.71.16.244^{🇺🇸 AS1663338.71.16.0/24}
			PTR	`fe2-r2-in.la10.l.antispamcloud.com`
		A	38.89.254.156^{🇺🇸 AS1663338.89.254.0/23}
			PTR	`fe1-r2-in.ch03.l.antispamcloud.com`
		A	149.13.75.27^{🇩🇪 AS16633149.13.75.0/24 Registered for Cogent Communications Customer - N-ABLE CLOUD GMBH}
			PTR	`fe1-r3-in.fra02.l.antispamcloud.com`
		A	154.59.104.23^{🇳🇱 COGENT154.59.104.0/24 Registered for Cogent Communications Customer - N-ABLE CLOUD GMBH}
			PTR	`fe2-r3-in.ams14.l.antispamcloud.com`
TXT	`v=spf1 mx a ptr a:nextbuzz.nl include:relay.mailchannels.net ~all`
SOA	`ns1.nextbuzz.nl`bert@addictions.nl 2026-05-26 #2

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-07-14 00:30:02 +0000 (EPOCH 1783989002)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-07-14 #1

Same first word

mastersofbusiness.nl

mastersofbusiness.net

mastersofbusiness.org

mastersofbusiness.tv

DNS History

18 records (6 active, 12 former)

○NSns1.intermax.nl2015-06-27 → 2016-02-22 · 4 obs

● 2015-06-27 16:52:12
● 2016-02-22 18:56:56
○ 2016-06-21 04:03:04
○ 2026-07-14 01:38:04

●NSns1.nextbuzz.nl2026-02-23 → 2026-07-14 · 3 obs

○ 2016-12-15 08:07:58
● 2026-02-23 01:17:10
● 2026-07-14 01:38:04

○NSns2.intermax.nl2015-06-27 → 2016-02-22 · 4 obs

● 2015-06-27 16:52:12
● 2016-02-22 18:56:56
○ 2016-06-21 04:03:04
○ 2026-07-14 01:38:04

●NSns2.nextbuzz.nl2026-02-23 → 2026-07-14 · 3 obs

○ 2016-12-15 08:07:58
● 2026-02-23 01:17:10
● 2026-07-14 01:38:04

○NSns3.byshosting.nl2016-06-21 → 2016-12-15 · 5 obs

○ 2016-02-22 18:56:56
● 2016-06-21 04:03:04
● 2016-12-15 08:07:58
○ 2026-02-23 01:17:10
○ 2026-07-14 01:38:04

○NSns3.intermax.eu2015-06-27 → 2016-02-22 · 4 obs

● 2015-06-27 16:52:12
● 2016-02-22 18:56:56
○ 2016-06-21 04:03:04
○ 2026-07-14 01:38:04

●NSns3.nextbuzz.nl2026-02-23 → 2026-07-14 · 3 obs

○ 2016-12-15 08:07:58
● 2026-02-23 01:17:10
● 2026-07-14 01:38:04

○NSns4.byshosting.com2016-06-21 → 2016-12-15 · 5 obs

○ 2016-02-22 18:56:56
● 2016-06-21 04:03:04
● 2016-12-15 08:07:58
○ 2026-02-23 01:17:10
○ 2026-07-14 01:38:04

○NSns5.byshosting.eu2016-06-21 → 2016-12-15 · 5 obs

○ 2016-02-22 18:56:56
● 2016-06-21 04:03:04
● 2016-12-15 08:07:58
○ 2026-02-23 01:17:10
○ 2026-07-14 01:38:04

●MXlastmx.spamexperts.net2026-02-23 → 2026-07-14 · 3 obs

○ 2016-12-15 08:07:58
● 2026-02-23 01:17:10
● 2026-07-14 01:38:04

●MXmx.spamexperts.com2026-02-23 → 2026-07-14 · 3 obs

○ 2016-12-15 08:07:58
● 2026-02-23 01:17:10
● 2026-07-14 01:38:04

○MXmx1.byshosting.nl2016-06-21 → 2016-12-15 · 5 obs

○ 2016-02-22 18:56:56
● 2016-06-21 04:03:04
● 2016-12-15 08:07:58
○ 2026-02-23 01:17:10
○ 2026-07-14 01:38:04

○MXmx1.intermax.nl2015-06-27 → 2016-02-22 · 4 obs

● 2015-06-27 16:52:12
● 2016-02-22 18:56:56
○ 2016-06-21 04:03:04
○ 2026-07-14 01:38:04

○MXmx2.byshosting.nl2016-06-21 → 2016-12-15 · 5 obs

○ 2016-02-22 18:56:56
● 2016-06-21 04:03:04
● 2016-12-15 08:07:58
○ 2026-02-23 01:17:10
○ 2026-07-14 01:38:04

○MXmx2.intermax.nl2015-06-27 → 2016-02-22 · 4 obs

● 2015-06-27 16:52:12
● 2016-02-22 18:56:56
○ 2016-06-21 04:03:04
○ 2026-07-14 01:38:04

●A178.62.223.1452026-02-23 → 2026-07-14 · 3 obs

○ 2016-12-15 08:07:58
● 2026-02-23 01:17:10
● 2026-07-14 01:38:04

○A195.14.1.1502016-06-21 → 2016-12-15 · 5 obs

○ 2016-02-22 18:56:56
● 2016-06-21 04:03:04
● 2016-12-15 08:07:58
○ 2026-02-23 01:17:10
○ 2026-07-14 01:38:04

○A80.95.160.2312015-06-27 → 2016-02-22 · 4 obs

● 2015-06-27 16:52:12
● 2016-02-22 18:56:56
○ 2016-06-21 04:03:04
○ 2026-07-14 01:38:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
mastersofbusiness.nl	ns1.nextbuzz.nl, ns2.nextbuzz.nl, ns3.nextbuzz.nl	6 records

✅ Authoritative Response

Server:64.227.74.163

NS records: ns1.nextbuzz.nl, ns2.nextbuzz.nl, ns3.nextbuzz.nl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mastersofbusiness.nl (unsigned zone)

⏱️ Timing

Total: 435ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`178.62.223.145`
NS	3	`ns1.nextbuzz.nl, ns2.nextbuzz.nl...`
MX	2	`lastmx.spamexperts.net (pri: 50), mx.spamexperts.com (pri: 10)`
TXT	1	`v=spf1 mx a ptr a:nextbuzz.nl include:re`
SOA	1	`ns1.nextbuzz.nl bert.addictions.nl`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.nextbuzz.nl, ns1.nextbuzz.nl, ns2.nextbuzz.nl...)

Analysis

IP Addresses

mastersofbusiness.nl resolves to just one IP address, 178.62.223.145.

Two other host names, along with mail.streetgasm-challenge.com, abroadexperience.nl and emconsult.nl, also share IP numbers with mastersofbusiness.nl.

Name Servers

Three name servers are authoritative for mastersofbusiness.nl: ns1.nextbuzz.nl, ns2.nextbuzz.nl and ns3.nextbuzz.nl.

At least some of mastersofbusiness.nl's name servers are shared with other domains, for example abroadexperience.nl, emconsult.nl, controlekamers.nl and two more.

These name servers tend to be used in conjunction with the name servers n3.nextbuzz.nl.

Host names that have two IP addresses:

ns2.nextbuzz.nl maps to two IP addresses — 64.227.74.163 and 2a03:b0c0:2:f0::202:7001.

ns3.nextbuzz.nl maps to two IP addresses — 104.131.36.21 and 2604:a880:800:14::3:c000.

Host names that point to one IP address:

ns1.nextbuzz.nl points to the IP address 178.62.223.145.

Mail Servers

mastersofbusiness.nl is served by two mail servers, mx.spamexperts.com and lastmx.spamexperts.net.

Among the domains sharing a mail server setup with mastersofbusiness.nl are thaifilmind.com, tananon.com, tcpfla.com and two others.

There is at least a partial MX overlap between mastersofbusiness.nl and other domains, including baslegal.nl, bahwanmge.com, silvera.fr and two others.

These mail servers often co-occur with the mail servers fallbackmx.spamexperts.eu.

DNS names with 8 IP addresses:

lastmx.spamexperts.net carries IP addresses 38.71.16.244, 38.89.254.156 and 149.13.75.27, with 5 other addresses beyond those.

Host names that have two IP addresses:

mx.spamexperts.com maps to two IP addresses — 38.89.254.156 and 2001:550:2:78::ca:100.

These two host names — lastmx.spamexperts.net and mx.spamexperts.com — each point to 38.89.254.156 IP addresses.