`mxhealthcheck.com`

DNSSEC	⚠️ Not signed
A	77.107.230.15^{🇮🇪 STRENCOM77.107.224.0/19}
NS	`ns1.proofpoint.com` ⭐
		A	2620:100:9000:1::d0^{🇺🇸 Proofpoint2620:100:9000::/47 Inc.}
			PTR	`ns1.proofpoint.com`
		A	208.84.67.208^{🇺🇸 Proofpoint208.84.67.0/24 Inc.}
			PTR	`ns1-at1.proofpoint.com`
			PTR	`ns1.proofpoint.com`
			PTR	`ns5.proofpoint.com`
NS	`ns3.proofpoint.com`
		A	2620:100:9004:1::d0^{🇺🇸 Proofpoint2620:100:9004::/47 Inc.}
			PTR	`ns3.proofpoint.com`
		A	208.84.66.208^{🇺🇸 Proofpoint208.84.66.0/24 Inc.}
			PTR	`ns1-sc4.proofpoint.com`
			PTR	`ns2.proofpoint.com`
			PTR	`ns3.proofpoint.com`
			PTR	`ns4.proofpoint.com`
NS	`pdns99.ultradns.biz`
		A	2610:a1:1015::87^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns99.ultradns.biz`
		A	156.154.66.99^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns99.ultradns.biz`
NS	`pdns99.ultradns.com`
		A	2001:502:f3ff::87^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns99.ultradns.com`
		A	156.154.64.99^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns99.ultradns.com`
NS	`pdns99.ultradns.net`
		A	2610:a1:1014::87^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns99.ultradns.net`
		A	156.154.65.99^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns99.ultradns.net`
NS	`pdns99.ultradns.org`
		A	2001:502:4612::87^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns99.ultradns.org`
		A	156.154.67.99^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns99.ultradns.org`
TXT	`v=spf1 -all`
SOA	`ns1.proofpoint.com`ops@proofpoint.com 2017-04-06 #49

`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=1774754032

Same first word

mxhealthcheck.com

DNS History

7 records (7 active, 0 former)

●NSns1.proofpoint.com2015-07-21 → 2026-03-29 · 2 obs

● 2015-07-21 18:10:46
● 2026-03-29 03:41:50

●NSns3.proofpoint.com2015-07-21 → 2026-03-29 · 2 obs

● 2015-07-21 18:10:46
● 2026-03-29 03:41:50

●NSpdns99.ultradns.biz2015-11-22 → 2026-03-29 · 3 obs

○ 2015-07-21 18:10:46
● 2015-11-22 16:53:00
● 2026-03-29 03:41:50

●NSpdns99.ultradns.com2015-11-22 → 2026-03-29 · 3 obs

○ 2015-07-21 18:10:46
● 2015-11-22 16:53:00
● 2026-03-29 03:41:50

●NSpdns99.ultradns.net2015-11-22 → 2026-03-29 · 3 obs

○ 2015-07-21 18:10:46
● 2015-11-22 16:53:00
● 2026-03-29 03:41:50

●NSpdns99.ultradns.org2015-11-22 → 2026-03-29 · 3 obs

○ 2015-07-21 18:10:46
● 2015-11-22 16:53:00
● 2026-03-29 03:41:50

●A77.107.230.152015-07-21 → 2026-03-29 · 2 obs

● 2015-07-21 18:10:46
● 2026-03-29 03:41:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mxhealthcheck.com	ns1.proofpoint.com, ns3.proofpoint.com, pdns99.ultradns.net, pdns99.ultradns.com...	6 records

✅ Authoritative Response

Server:208.84.66.208

NS records: ns1.proofpoint.com, ns3.proofpoint.com, pdns99.ultradns.net, pdns99.ultradns.com, pdns99.ultradns.biz, pdns99.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mxhealthcheck.com (unsigned zone)

⏱️ Timing

Total: 425ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`77.107.230.15`
NS	6	`ns1.proofpoint.com, ns3.proofpoint.com...`
TXT	1	`v=spf1 -all`
SOA	1	`ns1.proofpoint.com ops.proofpoint.com`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.proofpoint.com, ns1.proofpoint.com, ns3.proofpoint.com...)

Analysis

IP Addresses

mxhealthcheck.com resolves to one IP number: 77.107.230.15.

Name Servers

mxhealthcheck.com is delegated to six name servers: pdns99.ultradns.biz, ns1.proofpoint.com, ns3.proofpoint.com, pdns99.ultradns.com, pdns99.ultradns.net and pdns99.ultradns.org.

mxhealthcheck.com at least partially shares name servers with other domains, including hsshf.org, accidentalemail.com, 203.86.208.in-addr.arpa, viton.nl and shyield.ca.

These name servers are commonly used with infoblox-sc4.ppops.net.

Host names with two IP numbers: pdns99.ultradns.biz points to: 2610:a1:1015::87 and 156.154.66.99; ns1.proofpoint.com points to: 2620:100:9000:1::d0 and 208.84.67.208; ns3.proofpoint.com points to: 2620:100:9004:1::d0 and 208.84.66.208; pdns99.ultradns.com points to: 2001:502:f3ff::87 and 156.154.64.99; pdns99.ultradns.net points to: 2610:a1:1014::87 and 156.154.65.99; pdns99.ultradns.org points to: 2001:502:4612::87 and 156.154.67.99.

mxhealthcheck.com - robtex.com