`institchesbook.com`

DNSSEC	⚠️ Not signed
A	68.66.224.47^{🇺🇸 A2HOSTING68.66.224.0/20 A2 Hosting, Inc.}
		PTR	`az1-ss23.a2hosting.com`
NS	`ns1.a2hosting.com` ⭐ ⚠️ Not in parent delegation
		A	13.248.158.180^{🇺🇸 Amazon13.248.144.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns2.a2hosting.com` ⚠️ Not in parent delegation
		A	75.2.118.134^{🇺🇸 Amazon75.2.112.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
NS	`ns3.a2hosting.com`
		A	76.223.26.245^{🇺🇸 Amazon76.223.16.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns4.a2hosting.com`
		A	99.83.147.209^{🇺🇸 Amazon99.83.144.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
MX	`mail.institchesbook.com` ⭐
		A	68.66.224.47^{🇺🇸 A2HOSTING68.66.224.0/20 A2 Hosting, Inc.}
			PTR	`az1-ss23.a2hosting.com`
TXT	`v=spf1 +a +mx +ip4:68.66.224.47 include:spf.a2hosting.com ~all`
SOA	`ns1.a2hosting.com`root@az1-ss23.a2hosting.com 2026-03-06 #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=1774391212

Previously MX for

mail.institchesbook.com

institchesbook.com

Subdomains

mail.institchesbook.com

autodiscover.institchesbook.com

Same first word

institchesbook.com

DNS History

12 records (6 active, 6 former)

●NSns1.a2hosting.com2026-02-28 → 2026-03-24 · 3 obs

○ 2017-03-20 08:57:52
● 2026-02-28 03:11:06
● 2026-03-24 22:27:50

○NSns1.mednet-tech.com2015-08-20 → 2016-07-15 · 4 obs

● 2015-08-20 00:29:20
● 2016-07-15 04:03:30
○ 2017-03-20 08:57:52
○ 2026-03-24 22:27:50

●NSns2.a2hosting.com2026-02-28 → 2026-03-24 · 3 obs

○ 2017-03-20 08:57:52
● 2026-02-28 03:11:06
● 2026-03-24 22:27:50

○NSns2.mednet-tech.com2015-08-20 → 2016-07-15 · 4 obs

● 2015-08-20 00:29:20
● 2016-07-15 04:03:30
○ 2017-03-20 08:57:52
○ 2026-03-24 22:27:50

●NSns3.a2hosting.com2017-03-20 → 2026-03-24 · 3 obs

○ 2016-07-15 04:03:30
● 2017-03-20 08:57:52
● 2026-03-24 22:27:50

○NSns3.mednet-tech.com2015-08-20 → 2016-07-15 · 4 obs

● 2015-08-20 00:29:20
● 2016-07-15 04:03:30
○ 2017-03-20 08:57:52
○ 2026-03-24 22:27:50

●NSns4.a2hosting.com2017-03-20 → 2026-03-24 · 3 obs

○ 2016-07-15 04:03:30
● 2017-03-20 08:57:52
● 2026-03-24 22:27:50

○MXinstitchesbook.com2017-03-20 → 2020-02-26 · 5 obs

○ 2016-07-15 04:03:30
● 2017-03-20 08:57:52
● 2020-02-26 04:51:00
○ 2026-02-28 03:11:06
○ 2026-03-24 22:27:50

●MXmail.institchesbook.com2015-08-20 → 2026-03-24 · 6 obs

● 2015-08-20 00:29:20
● 2016-07-15 04:03:30
○ 2017-03-20 08:57:52
○ 2020-02-26 04:51:00
● 2026-02-28 03:11:06
● 2026-03-24 22:27:50

●A68.66.224.472026-02-28 → 2026-03-24 · 3 obs

○ 2020-02-26 04:51:00
● 2026-02-28 03:11:06
● 2026-03-24 22:27:50

○A75.98.175.1232017-03-20 → 2020-02-26 · 5 obs

○ 2016-07-15 04:03:30
● 2017-03-20 08:57:52
● 2020-02-26 04:51:00
○ 2026-02-28 03:11:06
○ 2026-03-24 22:27:50

○A76.12.61.1242015-08-20 → 2016-07-15 · 4 obs

● 2015-08-20 00:29:20
● 2016-07-15 04:03:30
○ 2017-03-20 08:57:52
○ 2026-03-24 22:27:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
institchesbook.com	ns3.a2hosting.com, ns4.a2hosting.com	2 records

✅ Authoritative Response

Server:76.223.26.245

NS records: ns3.a2hosting.com, ns4.a2hosting.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for institchesbook.com (unsigned zone)

⏱️ Timing

Total: 111ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`68.66.224.47`
NS	4	`ns1.a2hosting.com, ns3.a2hosting.com...`
MX	1	`mail.institchesbook.com (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:68.66.224.47 include:`
SOA	1	`ns1.a2hosting.com root.az1-ss23.a2hostin`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.a2hosting.com, ns4.a2hosting.com)

Analysis

Hierarchy

institchesbook.com is a parent of mail.institchesbook.com and autodiscover.institchesbook.com.

IP Addresses

institchesbook.com points to IP number: 68.66.224.47.

Other host names such as hsaccess.org, autodiscover.aroundtheworldineasyways.com, mrtimsworkshop.com, mail.ts3cine.com and nemesisbistro.com share IPs with institchesbook.com.

Name Servers

institchesbook.com is delegated to four name servers: ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com and ns4.a2hosting.com.

institchesbook.com at least partially shares name servers with other domains, for instance soupandbread.net, atlasconsultinginc.com, dtoconsult.com, speakernetwork.com and diasporacentretrust.org.

Host names with one IP number:

ns1.a2hosting.com points to 13.248.158.180.

ns2.a2hosting.com points to 75.2.118.134.

ns3.a2hosting.com points to 76.223.26.245.

ns4.a2hosting.com points to 99.83.147.209.

Mail Servers

institchesbook.com is handled by a single mail server, mail.institchesbook.com.

mail.institchesbook.com points to a single IP: 68.66.224.47.

institchesbook.com - robtex.com