lessonmanager.com - dns.ninja

lessonmanager.com

DNSSEC⚠️ Not signed
A2602:fd9e:1::21🇺🇸 HOSTROUND-LLC2602:fd9e::/40
A23.145.80.21🇺🇸 HOSTROUND-LLC23.145.80.0/24 HostRound LLC 400 S Akard St. STE 200 Dallas TX 75202 United States www.HostRound.com
NSns1.hostround.com ⭐
A45.77.111.166🇺🇸 AS-VULTR45.77.96.0/20 Vultr Assigned Prefix
PTRus-ns.hostround.com
NSns2.hostround.com
A192.25.14.90🇳🇱 HOSTROUND-LLC192.25.14.0/24 www.HostRound.com
PTR90-14-25-192.hostround.com
NSns3.hostround.com ⚠️ Not in parent delegation
A23.145.80.40🇺🇸 HOSTROUND-LLC23.145.80.0/24 HostRound LLC 400 S Akard St. STE 200 Dallas TX 75202 United States www.HostRound.com
PTR40-80-145-23.hostround.com
MXlessonmanager.com ⭐
A2602:fd9e:1::21🇺🇸 HOSTROUND-LLC2602:fd9e::/40
A23.145.80.21🇺🇸 HOSTROUND-LLC23.145.80.0/24 HostRound LLC 400 S Akard St. STE 200 Dallas TX 75202 United States www.HostRound.com
PTRmail-us110.hostround.com
TXTv=spf1 +a +mx +ip4:207.244.110.43 +include:spf.antispamcloud.com ~all
SOAns1.hostround.comap@walkingbass.com 2026-07-22 #1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785181867

MX for

lessonmanager.com

Same first word

lessonmanager.com

DNS History

9 records (6 active, 3 former)

200920112013201520172019202120232025NSns1.hostround.comns2.hostround.comns3.hostround.comns1.leadingtonemedia.comns2.leadingtonemedia.comMXlessonmanager.comA23.145.80.212602:fd9e:1::21204.197.248.123
●NSns1.hostround.com2026-02-17 → 2026-07-27 · 3 obs
○ 2017-02-08 15:46:02
● 2026-02-17 13:14:16
● 2026-07-27 20:03:18
○NSns1.leadingtonemedia.com2015-06-24 → 2017-02-08 · 5 obs
○ 2008-03-17 20:12:18
● 2015-06-24 08:10:48
● 2017-02-08 15:46:02
○ 2026-02-17 13:14:16
○ 2026-07-27 20:03:18
●NSns2.hostround.com2026-02-17 → 2026-07-27 · 3 obs
○ 2017-02-08 15:46:02
● 2026-02-17 13:14:16
● 2026-07-27 20:03:18
○NSns2.leadingtonemedia.com2015-06-24 → 2017-02-08 · 5 obs
○ 2008-03-17 20:12:18
● 2015-06-24 08:10:48
● 2017-02-08 15:46:02
○ 2026-02-17 13:14:16
○ 2026-07-27 20:03:18
●NSns3.hostround.com2026-02-17 → 2026-07-27 · 3 obs
○ 2017-02-08 15:46:02
● 2026-02-17 13:14:16
● 2026-07-27 20:03:18
●MXlessonmanager.com2015-06-24 → 2026-07-27 · 3 obs
○ 2008-03-17 20:12:18
● 2015-06-24 08:10:48
● 2026-07-27 20:03:18
○A204.197.248.1232015-06-24 → 2017-02-08 · 5 obs
○ 2008-03-17 20:12:18
● 2015-06-24 08:10:48
● 2017-02-08 15:46:02
○ 2026-02-17 13:14:16
○ 2026-07-27 20:03:18
●A23.145.80.212026-02-17 → 2026-07-27 · 3 obs
○ 2017-02-08 15:46:02
● 2026-02-17 13:14:16
● 2026-07-27 20:03:18
●A2602:fd9e:1::212026-02-17 → 2026-07-27 · 3 obs
○ 2017-02-08 15:46:02
● 2026-02-17 13:14:16
● 2026-07-27 20:03:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
come.gtld-servers.net, g.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net...-
lessonmanager.comns2.hostround.com, ns1.hostround.com2 records

✅ Authoritative Response

Server:45.77.111.166

NS records: ns2.hostround.com, ns1.hostround.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lessonmanager.com (unsigned zone)

⏱️ Timing

Total: 165ms | Queries: -

📄 Records

TypeCountSample Data
A123.145.80.21
AAAA12602:fd9e:1::21
NS3ns3.hostround.com, ns1.hostround.com...
MX1lessonmanager.com (pri: 0)
TXT1v=spf1 +a +mx +ip4:207.244.110.43 +inclu
SOA1ns1.hostround.com ap.walkingbass.com

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.hostround.com, ns1.hostround.com)

Analysis

Mail Server Role

The MX record for lessonmanager.com points back to lessonmanager.com — it is its own mail server.

IP Addresses

lessonmanager.com directs to two IP numbers, 23.145.80.21 and 2602:fd9e:1::21

Among the host names that share IP numbers with lessonmanager.com are mahjjong777.online, mechanicalengineeringblog.com, www.tieline.com and two others.

Name Servers

lessonmanager.com has three name servers — ns1.hostround.com, ns2.hostround.com and ns3.hostround.com.

lessonmanager.com partially shares its NS delegation with several other domains, including firewish.com, dia-afrique.org, projectaccess.co and two others.

These name servers are regularly seen alongside eu-ns.hostround.com and us-ns.hostround.com as name servers.

Each of the three hostnames points to exactly one IP address: ns1.hostround.com points to 45.77.111.166, ns2.hostround.com points to 192.25.14.90 and ns3.hostround.com points to 23.145.80.40.

Mail Servers

The MX record for lessonmanager.com points to a single mail server: lessonmanager.com.

The host lessonmanager.com resolves to 23.145.80.21 and 2602:fd9e:1::21 — two IP addresses.