hostmaster.k12us.com - robtex.com
hostmaster.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.comhostmaster@k12us.com serial=1774619101 | ||||||
Same first word
Similar names
DNS History
8 records (5 active, 3 former)
○MXrongo.k12us.com2015-07-16 → 2016-07-08 · 4 obs
● 2016-07-08 04:48:10
○ 2026-02-26 05:48:52
○ 2026-03-27 18:10:48
○A8.36.79.562015-07-16 → 2015-07-16 · 3 obs
○ 2015-11-19 07:42:14
○ 2026-03-27 18:10:48
○A8.36.79.832015-11-19 → 2016-07-08 · 5 obs
● 2015-11-19 07:42:14
● 2016-07-08 04:48:10
○ 2026-02-26 05:48:52
○ 2026-03-27 18:10:48
●A96.225.31.432026-02-26 → 2026-03-27 · 3 obs
● 2026-02-26 05:48:52
● 2026-03-27 18:10:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| k12us.com | ns3.k12hq.com, ns4.k12hq.com | 2 records |
✅ Authoritative Response
Server:104.131.172.151
NS records: ns3.k12hq.com, ns4.k12hq.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for k12us.com (unsigned zone)
⏱️ Timing
Total: 153ms | 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
hostmaster.k12us.com resolves to one IP number: 96.225.31.43.
other host names including k12hq.nj.k12us.com, kyanite.k12us.com, ns.k12us.com, ntp.k12us.com and mailproxy2.k12us.com share IP numbers with hostmaster.k12us.com.
Mail Servers
Four mail servers handle hostmaster.k12us.com: mx1.k12us.com, mx2.k12us.com, mx3.k12us.com and mx4.k12us.com.
hostmaster.k12us.com shares some mail servers with other domains, at least partially, for instance punderson.us, dtschools.org, linden.nj.k12us.com, sandiapreptimes.org and corlawyer.com.
Host names with a single IP:
The host name mx1.k12us.com points to: 96.225.31.38.
The host name mx2.k12us.com points to: 96.225.31.13.
The host name mx3.k12us.com points to: 96.225.31.14.
The host name mx4.k12us.com points to: 96.225.31.38.
Host names that point to 96.225.31.38: mx1.k12us.com and mx4.k12us.com.