`mainframeexpo.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`
SOA	`ns.buydomains.com`hostmaster@buydomains.com 2015-07-13 #19

`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

Same first word

mainframeexpo.com

DNS History

5 records (3 active, 2 former)

●NSns.buydomains.com2015-08-10 → 2026-03-23 · 2 obs

● 2015-08-10 20:20:10
● 2026-03-23 05:07:28

●NSthis-domain-for-sale.com2026-03-23 → 2026-03-23 · 2 obs

○ 2015-08-10 20:20:10
● 2026-03-23 05:07:28

○A141.8.225.1242015-12-16 → 2016-07-12 · 5 obs

○ 2015-08-10 20:20:10
● 2015-12-16 08:38:56
● 2016-07-12 16:30:30
○ 2017-03-19 11:05:08
○ 2026-03-23 05:07:28

●A207.148.248.1432017-03-19 → 2026-03-23 · 3 obs

○ 2016-07-12 16:30:30
● 2017-03-19 11:05:08
● 2026-03-23 05:07:28

○A50.63.202.1042015-08-10 → 2015-08-10 · 3 obs

● 2015-08-10 20:20:10
○ 2015-12-16 08:38:56
○ 2026-03-23 05:07:28

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:52.20.26.87

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mainframeexpo.com (unsigned zone)

⏱️ Timing

Total: 165ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`207.148.248.143`
SOA	1	`ns.buydomains.com hostmaster.buydomains.`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

mainframeexpo.com resolves to a single IP: 207.148.248.143.

Other host names, for instance coolsettings.com, openroadadventures.com, developpee.com, phonedit.com and budgetbuilt.com share IP numbers with mainframeexpo.com.

Name Servers

mainframeexpo.com has two name servers: this-domain-for-sale.com and ns.buydomains.com.

mainframeexpo.com shares the same name server setup as other domains, for example caninecritters.com, giprotect.com, ceramicfresh.com, pajamadeals.com and hivebooster.com.

mainframeexpo.com shares name servers with other domains to some extent, for example transcendentdesign.com and measuredsteps.com.

Host names with one IP number:

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

ns.buydomains.com points to: 52.20.26.87

Names pointing to 52.20.26.87: this-domain-for-sale.com and ns.buydomains.com

mainframeexpo.com - robtex.com