`nullmx.mathcheck.com`

DNSSEC	⚠️ Not signed
A	103.224.182.243^{🇦🇺 TRELLIAN-AS-AP103.224.182.0/23 Trellian Pty. Limited 8 East Concourse}
		PTR	`lb-182-243.above.com`
NS	`ns1.abovedomains.com` ⭐ ⚠️ Not in parent delegation
		A	103.224.182.9^{🇦🇺 TRELLIAN-AS-AP103.224.182.0/23 Trellian Pty. Limited 8 East Concourse}
			PTR	`ns1.above.com`
		A	103.224.212.9^{🇦🇺 TRELLIAN-AS-AP103.224.212.0/23 Trellian Pty. Limited 8 East Concourse}
			PTR	`ns1.above.com`
NS	`ns2.abovedomains.com` ⚠️ Not in parent delegation
		A	103.224.182.10^{🇦🇺 TRELLIAN-AS-AP103.224.182.0/23 Trellian Pty. Limited 8 East Concourse}
			PTR	`ns2.above.com`
		A	103.224.212.10^{🇦🇺 TRELLIAN-AS-AP103.224.212.0/23 Trellian Pty. Limited 8 East Concourse}
			PTR	`ip-103-224-212-10.defastlink.net`
MX	`park-mx.above.com` ⭐
		A	103.224.212.34^{🇦🇺 TRELLIAN-AS-AP103.224.212.0/23 Trellian Pty. Limited 8 East Concourse}
			PTR	`park-mx.above.com`
TXT	`v=spf1 ip6:fdcf:abda:4154::/48 -all`
SOA	`ns1.abovedomains.com`hostmaster@trellian.com 2026-04-17 #1

`mathcheck.com`

	DNSSEC	⚠️ Not signed
	A	103.224.182.243^{🇦🇺 TRELLIAN-AS-AP103.224.182.0/23 Trellian Pty. Limited 8 East Concourse}
	NS	`ns1.abovedomains.com` ⭐ ⚠️ Not in parent delegation
	NS	`5680.ns1.abovedomains.com` ⚠️ Not in zone NS records
	NS	`5680.ns2.abovedomains.com` ⚠️ Not in zone NS records
	NS	`ns2.abovedomains.com` ⚠️ Not in parent delegation
	MX	`park-mx.above.com` ⭐
	TXT	`v=spf1 ip6:fdcf:abda:4154::/48 -all`
	SOA	`ns1.abovedomains.com`hostmaster@trellian.com 2026-04-17 #1

Previously MX for

mathcheck.com

Same first word

nullmx.net

nullmx.org

nullmx.com

Similar names

mlnxul.com

DNS History

8 records (4 active, 4 former)

●NSns1.abovedomains.com2026-04-17 → 2026-04-17 · 1 obs

● 2026-04-17 09:16:20

●NSns2.abovedomains.com2026-04-17 → 2026-04-17 · 1 obs

● 2026-04-17 09:16:20

●MXpark-mx.above.com2026-04-17 → 2026-04-17 · 1 obs

● 2026-04-17 09:16:20

●A103.224.182.2432026-04-17 → 2026-04-17 · 2 obs

○ 2016-04-17 11:14:16
● 2026-04-17 09:16:20

○A173.192.64.1472015-10-20 → 2016-04-17 · 5 obs

○ 2015-06-04 02:53:12
● 2015-10-20 23:40:18
○ 2015-12-30 04:56:48
● 2016-04-17 11:14:16
○ 2026-04-17 09:16:20

○A173.192.64.1512015-06-04 → 2015-06-04 · 3 obs

● 2015-06-04 02:53:12
○ 2015-10-20 23:40:18
○ 2026-04-17 09:16:20

○A54.72.9.1152015-12-30 → 2015-12-30 · 4 obs

○ 2015-10-20 23:40:18
● 2015-12-30 04:56:48
○ 2016-04-17 11:14:16
○ 2026-04-17 09:16:20

○CNAME825610.parkingcrew.net2015-12-30 → 2015-12-30 · 3 obs

● 2015-12-30 04:56:48
○ 2016-04-17 11:14:16
○ 2026-04-17 09:16:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mathcheck.com	5680.ns1.abovedomains.com, 5680.ns2.abovedomains.com	4 records

✅ Authoritative Response

Server:103.224.182.10

NS records: 5680.ns1.abovedomains.com, 5680.ns2.abovedomains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathcheck.com (unsigned zone)

⏱️ Timing

Total: 151ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.224.182.243`
NS	2	`ns2.abovedomains.com, ns1.abovedomains.com`
MX	1	`park-mx.above.com (pri: 10)`
TXT	1	`v=spf1 ip6:fdcf:abda:4154::/48 -all`
SOA	1	`ns1.abovedomains.com hostmaster.trellian`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (5680.ns1.abovedomains.com, 5680.ns1.abovedomains.com, 5680.ns2.abovedomains.com...)

Analysis

IP Addresses

nullmx.mathcheck.com points to a single IP number: 103.224.182.243.

other host names for instance 234-80.tatanova.com, buyfutures.com, ixtamaztli.(0x736578)ibl.com, shoprudra.com and 233-98.tatanova.com share IP numbers with nullmx.mathcheck.com.

Name Servers

nullmx.mathcheck.com is delegated to two name servers: ns1.abovedomains.com and ns2.abovedomains.com.

nullmx.mathcheck.com shares the same name server setup as other domains, for example mail.earled.com, 90.202.16.103.in-addr.arpa, advanceanerica.net, qiaoxifu.com and bkashbd99.wapka.mobi.

nullmx.mathcheck.com at least partially shares name servers with other domains, for instance tel-avivtimes.com, 126778.com, fede.at, scotishgas.co.uk and download.iwisoft.com.

These name servers are often used together with the name servers 5014.ns1.abovedomains.com, 5014.ns2.abovedomains.com, ns1.above.com, ns2.above.com, 5579.ns1.abovedomains.com, 5579.ns2.abovedomains.com, ns15.abovedomains.com, ns16.abovedomains.com, 421.ns1.abovedomains.com and 421.ns2.abovedomains.com.

Host names with two IP numbers:

ns1.abovedomains.com points to 103.224.182.9 and 103.224.212.9

ns2.abovedomains.com points to 103.224.182.10 and 103.224.212.10

Mail Servers

nullmx.mathcheck.com is handled by a single mail server, park-mx.above.com.

nullmx.mathcheck.com shares the same mail server setup as other domains, for instance overwatch.chat, www.ctcwings.com, platters.com, renoldi.com and pdmd.org.

Host name park-mx.above.com points to IP address 103.224.212.34.

nullmx.mathcheck.com - robtex.com