`readchallenge.com`

DNSSEC	⚠️ Not signed
A	207.148.248.143^{🇺🇸 EIG-29873207.148.248.0/24}
		PTR	`ip-207-148-248-143.defastlink.net`
NS	`ns.buydomains.com` ⚠️ Not in zone NS records
		A	52.20.26.87^{🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix}
			PTR	`ec2-52-20-26-87.compute-1.amazonaws.com`
NS	`this-domain-for-sale.com` ⚠️ Not in zone NS records
		A	52.20.26.87^{🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix}
			PTR	`ec2-52-20-26-87.compute-1.amazonaws.com`

`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=1771291435

Subdomains

mail.readchallenge.com

Same first word

readchallenge.com

DNS History

20 records (3 active, 17 former)

○NSns-cloud-b1.googledomains.com2015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○NSns-cloud-b2.googledomains.com2015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○NSns-cloud-b3.googledomains.com2015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○NSns-cloud-b4.googledomains.com2015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

●NSns.buydomains.com2017-03-25 → 2026-03-23 · 3 obs

○ 2016-07-21 17:56:28
● 2017-03-25 22:11:48
● 2026-03-23 14:50:54

●NSthis-domain-for-sale.com2026-02-26 → 2026-03-23 · 3 obs

○ 2017-03-25 22:11:48
● 2026-02-26 08:11:14
● 2026-03-23 14:50:54

○MXalt1.gmr-smtp-in.l.google.com2015-11-19 → 2016-02-27 · 4 obs

● 2015-11-19 16:36:14
● 2016-02-27 14:22:38
○ 2016-07-21 17:56:28
○ 2026-03-23 14:50:54

○MXalt2.gmr-smtp-in.l.google.com2015-11-19 → 2016-02-27 · 4 obs

● 2015-11-19 16:36:14
● 2016-02-27 14:22:38
○ 2016-07-21 17:56:28
○ 2026-03-23 14:50:54

○MXalt3.gmr-smtp-in.l.google.com2015-11-19 → 2016-02-27 · 4 obs

● 2015-11-19 16:36:14
● 2016-02-27 14:22:38
○ 2016-07-21 17:56:28
○ 2026-03-23 14:50:54

○MXalt4.gmr-smtp-in.l.google.com2015-11-19 → 2016-02-27 · 4 obs

● 2015-11-19 16:36:14
● 2016-02-27 14:22:38
○ 2016-07-21 17:56:28
○ 2026-03-23 14:50:54

○MXgmr-smtp-in.l.google.com2015-11-19 → 2016-02-27 · 4 obs

● 2015-11-19 16:36:14
● 2016-02-27 14:22:38
○ 2016-07-21 17:56:28
○ 2026-03-23 14:50:54

○A2001:4860:4802:32::152015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○A2001:4860:4802:34::152015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○A2001:4860:4802:36::152015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○A2001:4860:4802:38::152015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

●A207.148.248.1432017-03-25 → 2026-03-23 · 3 obs

○ 2016-07-21 17:56:28
● 2017-03-25 22:11:48
● 2026-03-23 14:50:54

○A216.239.32.212015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○A216.239.34.212015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○A216.239.36.212015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

○A216.239.38.212015-11-19 → 2016-07-21 · 4 obs

● 2015-11-19 16:36:14
● 2016-07-21 17:56:28
○ 2017-03-25 22:11:48
○ 2026-03-23 14:50:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
readchallenge.com	ns.buydomains.com, this-domain-for-sale.com	2 records

✅ Authoritative Response

Server:52.4.207.204

NS records: ns.buydomains.com, this-domain-for-sale.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for readchallenge.com (unsigned zone)

⏱️ Timing

Total: 3530ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`207.148.248.143`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.buydomains.com, this-domain-for-sale.com)

Analysis

Hierarchy

mail.readchallenge.com has readchallenge.com as its parent.

IP Addresses

readchallenge.com maps to IP address 207.148.248.143.

Other host names, for instance classicdecorations.com, isdesign.net, ns2.webjaguars.com, mhmaintenance.com and sabrecommunications.com share IP numbers with readchallenge.com.

Name Servers

Two name servers this-domain-for-sale.com and ns.buydomains.com are delegated to readchallenge.com.

readchallenge.com uses the same name server configuration as other domains, such as covenantconcepts.com, padlockcover.com, imagetranslation.com, sardiniabest.com and altd.org.

readchallenge.com shares name servers with other domains at least partially, for instance vyna.net and terminalcom.com.

Hostnames with one IP number:

this-domain-for-sale.com points to 52.20.26.87

ns.buydomains.com points to 52.20.26.87

Hostnames pointing to 52.20.26.87: this-domain-for-sale.com, ns.buydomains.com

readchallenge.com - robtex.com