`mailproxy3.k12us.com`

DNSSEC	⚠️ Not signed
A	96.225.31.43^{🇺🇸 AS70196.225.0.0/17 MCI Communications Services, LLC d/b/a Verizon Business}
		PTR	`static-96-225-31-43.nwrknj.fios.verizon.net`
MX	`mx1.k12us.com` ⭐
		A	96.225.31.38^{🇺🇸 AS70196.225.0.0/17 MCI Communications Services, LLC d/b/a Verizon Business}
			PTR	`mailproxy.k12us.com`
MX	`mx2.k12us.com` ⭐
		A	96.225.31.13^{🇺🇸 AS70196.225.0.0/17 MCI Communications Services, LLC d/b/a Verizon Business}
			PTR	`static-96-225-31-13.nwrknj.fios.verizon.net`
MX	`mx3.k12us.com`⁽¹⁵⁾
		A	96.225.31.14^{🇺🇸 AS70196.225.0.0/17 MCI Communications Services, LLC d/b/a Verizon Business}
			PTR	`static-96-225-31-14.nwrknj.fios.verizon.net`
MX	`mx4.k12us.com`⁽¹⁵⁾
		A	96.225.31.38^{🇺🇸 AS70196.225.0.0/17 MCI Communications Services, LLC d/b/a Verizon Business}
			PTR	`mailproxy.k12us.com`
TXT	`v=spf1 mx include:_spf.k12us.com ~all`

`k12us.com`

	DNSSEC	⚠️ Not signed
	A	96.225.31.41^{🇺🇸 AS70196.225.0.0/17 MCI Communications Services, LLC d/b/a Verizon Business}
	NS	`ns3.k12hq.com` ⭐
	NS	`ns4.k12hq.com`
	MX	`spamtrakker.networksandmore.com` ⭐
	TXT	`v=spf1 mx include:_spf.k12us.com ~all`
	SOA	`ns3.k12hq.com`hostmaster@k12us.com serial=1774609501

📈 Tranco rank: #478,429

DNS History

6 records (5 active, 1 former)

●MXmx1.k12us.com2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 12:23:04

●MXmx2.k12us.com2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 12:23:04

●MXmx3.k12us.com2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 12:23:04

●MXmx4.k12us.com2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 12:23:04

○A8.36.79.432015-08-10 → 2016-09-14 · 3 obs

● 2015-08-10 01:27:02
● 2016-09-14 11:29:54
○ 2026-03-27 12:23:04

●A96.225.31.432026-03-27 → 2026-03-27 · 2 obs

○ 2016-09-14 11:29:54
● 2026-03-27 12:23:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
k12us.com	ns3.k12hq.com, ns4.k12hq.com	2 records

✅ Authoritative Response

Server:96.225.31.35

NS records: ns3.k12hq.com, ns4.k12hq.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for k12us.com (unsigned zone)

⏱️ Timing

Total: 384ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`96.225.31.43`
MX	4	`mx1.k12us.com (pri: 5), mx2.k12us.com (pri: 5)...`
TXT	1	`v=spf1 mx include:_spf.k12us.com ~all`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.k12hq.com, ns4.k12hq.com)

Analysis

IP Addresses

mailproxy3.k12us.com maps to IP address 96.225.31.43.

Other host names, for instance ntp.k12us.com, mailproxy2.k12us.com, butsu.k12us.com, il.k12us.com and static-96-225-31-43.nwrknj.fios.verizon.net share IP numbers with mailproxy3.k12us.com.

Mail Servers

mailproxy3.k12us.com is handled by four mail servers: mx1.k12us.com, mx2.k12us.com, mx3.k12us.com and mx4.k12us.com.

mailproxy3.k12us.com shares mail servers with other domains at least in part, for instance edgewood.k12.oh.us, lakehurst.nj.k12us.com, pallas.k12us.com, cedargrove.k12.nj.us and longbranch.k12.nj.us.

Host names with a single IP

mx1.k12us.com points to 96.225.31.38.

mx2.k12us.com points to 96.225.31.13.

mx3.k12us.com points to 96.225.31.14.

mx4.k12us.com points to 96.225.31.38.

Names that point to 96.225.31.38: mx1.k12us.com and mx4.k12us.com.

mailproxy3.k12us.com - robtex.com