`constructcalcs.com`

DNSSEC	⚠️ Not signed
A	5.45.79.16^{🇳🇱 SCALAXY-AS5.45.76.0/22}
NS	`srv0292.ispiria.net` ⭐
NS	`ns1.example.com` ⚠️ Not in parent delegation
NS	`ns1.holdcenter.com` ⚠️ Not in zone NS records
NS	`ns2.example.com` ⚠️ Not in parent delegation
NS	`ns2.holdcenter.com` ⚠️ Not in zone NS records
MX	`mail.constructcalcs.com`⁽²⁰⁾
		A	fd07:c784:49fb:0:225:90ff:fe46:6472
		A	5.45.79.16^{🇳🇱 SCALAXY-AS5.45.76.0/22}
TXT	`v=spf1 ip4:5.45.79.16 a mx ~all`
SOA	`srv0292.ispiria.net`root@example.com 2023-07-28 #2

`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=1776128457

Subdomains

mail.constructcalcs.com

Same first word

constructcalcs.com

DNS History

14 records (7 active, 7 former)

●NSns1.example.com2026-03-18 → 2026-04-14 · 3 obs

○ 2018-08-11 04:35:58
● 2026-03-18 06:57:00
● 2026-04-14 01:30:48

●NSns1.holdcenter.com2018-08-11 → 2026-04-14 · 3 obs

○ 2017-01-28 11:48:18
● 2018-08-11 04:35:58
● 2026-04-14 01:30:48

●NSns2.example.com2026-03-18 → 2026-04-14 · 3 obs

○ 2018-08-11 04:35:58
● 2026-03-18 06:57:00
● 2026-04-14 01:30:48

●NSns2.holdcenter.com2018-08-11 → 2026-04-14 · 3 obs

○ 2017-01-28 11:48:18
● 2018-08-11 04:35:58
● 2026-04-14 01:30:48

○NSns69.domaincontrol.com2015-07-04 → 2017-01-28 · 4 obs

● 2015-07-04 13:19:54
● 2017-01-28 11:48:18
○ 2018-08-11 04:35:58
○ 2026-04-14 01:30:48

○NSns70.domaincontrol.com2015-07-04 → 2017-01-28 · 4 obs

● 2015-07-04 13:19:54
● 2017-01-28 11:48:18
○ 2018-08-11 04:35:58
○ 2026-04-14 01:30:48

○NSserver.domain.com2018-08-11 → 2018-08-11 · 4 obs

○ 2017-01-28 11:48:18
● 2018-08-11 04:35:58
○ 2026-03-18 06:57:00
○ 2026-04-14 01:30:48

●NSsrv0292.ispiria.net2026-03-18 → 2026-04-14 · 3 obs

○ 2018-08-11 04:35:58
● 2026-03-18 06:57:00
● 2026-04-14 01:30:48

●MXmail.constructcalcs.com2018-08-11 → 2026-04-14 · 3 obs

○ 2017-01-28 11:48:18
● 2018-08-11 04:35:58
● 2026-04-14 01:30:48

○MXmailstore1.secureserver.net2015-07-04 → 2017-01-28 · 4 obs

● 2015-07-04 13:19:54
● 2017-01-28 11:48:18
○ 2018-08-11 04:35:58
○ 2026-04-14 01:30:48

○MXsmtp.secureserver.net2015-07-04 → 2017-01-28 · 4 obs

● 2015-07-04 13:19:54
● 2017-01-28 11:48:18
○ 2018-08-11 04:35:58
○ 2026-04-14 01:30:48

○A37.1.207.1602018-08-11 → 2018-08-11 · 4 obs

○ 2017-01-28 11:48:18
● 2018-08-11 04:35:58
○ 2026-03-18 06:57:00
○ 2026-04-14 01:30:48

●A5.45.79.162026-03-18 → 2026-04-14 · 3 obs

○ 2018-08-11 04:35:58
● 2026-03-18 06:57:00
● 2026-04-14 01:30:48

○A50.63.196.482015-07-04 → 2017-01-28 · 4 obs

● 2015-07-04 13:19:54
● 2017-01-28 11:48:18
○ 2018-08-11 04:35:58
○ 2026-04-14 01:30:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
constructcalcs.com	ns1.holdcenter.com, ns2.holdcenter.com	2 records

✅ Authoritative Response

Server:5.45.79.16

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for constructcalcs.com (unsigned zone)

⏱️ Timing

Total: 230ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`5.45.79.16`
NS	2	`ns1.example.com, ns2.example.com`
MX	2	`mail.constructcalcs.com (pri: 10), mail.constructcalcs.com (pri: 20)`
TXT	1	`v=spf1 ip4:5.45.79.16 a mx ~all`
SOA	1	`srv0292.ispiria.net root.example.com`

📌 Glue Records Collected

Total: 2

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

Analysis

Hierarchy

constructcalcs.com is parent of mail.constructcalcs.com.

IP Addresses

constructcalcs.com points to a single IP: 5.45.79.16.

Other host names, for instance mail.guesstheemoji-movies-answers.com, holdcenter.com, guesstheemoji-movies-answers.com, bestpickr.com and parkovka.com share IP numbers with constructcalcs.com.

Name Servers

constructcalcs.com is delegated to five name servers: ns1.example.com, ns2.example.com, ns1.holdcenter.com, ns2.holdcenter.com and srv0292.ispiria.net.

constructcalcs.com at least partially shares its name servers with other domains, for instance diplom-ivanovo.ru, 1win5509.ru, pokervip.ru, vavada-uwqk.top and ewnc.info.

These name servers are commonly used with srv0592.inferno.name, ns1.firstvds.ru, ns2.firstvds.ru, ns3.zomro.com, ns1.zomro.net, ns2.zomro.ru, ns4.zomro.su, ns1.nocsu.com, ns2.nocsu.com and server109.servera.info.

Mail Servers

constructcalcs.com is served by a single mail server, mail.constructcalcs.com.

Hostname mail.constructcalcs.com resolves to two IPs: fd07:c784:49fb:0:225:90ff:fe46:6472 and 5.45.79.16.

constructcalcs.com - robtex.com