`nullmx.bigboook.com`

DNSSEC	⚠️ Not signed
A	91.184.0.200^{🇩🇰 ONECOM91.184.0.0/19}
		PTR	`balancing.hostnet.nl`

`bigboook.com`

	DNSSEC	⚠️ Not signed
	A	91.184.0.109^{🇩🇰 ONECOM91.184.0.0/19}
	NS	`ns01.hostnet.nl` ⭐
	NS	`ns02.hostnet.nl`
	TXT	`v=spf1 include:_spf.hostnet.nl -all`
	SOA	`ns01.hostnet.nl`hostmaster@hostnet.nl 2026-01-10 #1

Same first word

nullmx.org

nullmx.com

nullmx.net

Similar names

mlnxul.com

DNS History

5 records (1 active, 4 former)

○NSns1.dnslink.com2015-05-23 → 2016-09-21 · 4 obs

● 2015-05-23 06:28:10
● 2016-09-21 09:55:44
○ 2026-03-11 23:50:24
○ 2026-03-27 04:13:56

○NSns2.dnslink.com2015-05-23 → 2016-09-21 · 4 obs

● 2015-05-23 06:28:10
● 2016-09-21 09:55:44
○ 2026-03-11 23:50:24
○ 2026-03-27 04:13:56

○MXmail.b-io.co2015-05-23 → 2016-09-21 · 4 obs

● 2015-05-23 06:28:10
● 2016-09-21 09:55:44
○ 2026-03-11 23:50:24
○ 2026-03-27 04:13:56

○A209.15.13.1342015-05-23 → 2016-09-21 · 4 obs

● 2015-05-23 06:28:10
● 2016-09-21 09:55:44
○ 2026-03-11 23:50:24
○ 2026-03-27 04:13:56

●A91.184.0.2002026-03-11 → 2026-03-27 · 3 obs

○ 2016-09-21 09:55:44
● 2026-03-11 23:50:24
● 2026-03-27 04:13:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
bigboook.com	ns01.hostnet.nl, ns02.hostnet.nl	-

✅ Authoritative Response

Server:185.10.11.13

NS records: ns01.hostnet.nl, ns02.hostnet.nl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bigboook.com (unsigned zone)

⏱️ Timing

Total: 468ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.184.0.200`

Analysis

IP Addresses

nullmx.bigboook.com points to an IP address: 91.184.0.200.

other host names include sjirp.com, volumeone.eu, mail.plaat.org, gogood.eu and mx1.vacirca.eu; they share IP numbers with nullmx.bigboook.com.

nullmx.bigboook.com - robtex.com