`runningcourses.com`

DNSSEC	⚠️ Not signed
A	207.148.248.143^{🇺🇸 EIG-29873207.148.248.0/24}
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=1785774957

Same first word

runningcourses.com

DNS History

13 records (3 active, 10 former)

○NSdns1.name-services.com2015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 09:42:22
○ 2015-12-05 17:22:10
○ 2026-08-03 16:55:00

○NSdns2.name-services.com2015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 09:42:22
○ 2015-12-05 17:22:10
○ 2026-08-03 16:55:00

○NSdns3.name-services.com2015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 09:42:22
○ 2015-12-05 17:22:10
○ 2026-08-03 16:55:00

○NSdns4.name-services.com2015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 09:42:22
○ 2015-12-05 17:22:10
○ 2026-08-03 16:55:00

○NSdns5.name-services.com2015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 09:42:22
○ 2015-12-05 17:22:10
○ 2026-08-03 16:55:00

●NSns.buydomains.com2017-03-16 → 2026-08-03 · 3 obs

○ 2016-07-15 15:04:24
● 2017-03-16 21:09:54
● 2026-08-03 16:55:00

○NSns1.afternic.com2015-12-05 → 2016-07-15 · 5 obs

○ 2015-08-18 09:42:22
● 2015-12-05 17:22:10
● 2016-07-15 15:04:24
○ 2017-03-16 21:09:54
○ 2026-08-03 16:55:00

●NSthis-domain-for-sale.com2026-04-03 → 2026-08-03 · 3 obs

○ 2017-03-16 21:09:54
● 2026-04-03 03:12:42
● 2026-08-03 16:55:00

○MXp.nsm.ctmail.com2015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 09:42:22
○ 2015-12-05 17:22:10
○ 2026-08-03 16:55:00

○A141.8.225.1242017-03-16 → 2017-03-16 · 4 obs

○ 2016-07-15 15:04:24
● 2017-03-16 21:09:54
○ 2020-03-09 01:51:36
○ 2026-08-03 16:55:00

○A184.168.221.1042015-12-05 → 2016-07-15 · 5 obs

○ 2015-08-18 09:42:22
● 2015-12-05 17:22:10
● 2016-07-15 15:04:24
○ 2017-03-16 21:09:54
○ 2026-08-03 16:55:00

●A207.148.248.1432020-03-09 → 2026-08-03 · 3 obs

○ 2017-03-16 21:09:54
● 2020-03-09 01:51:36
● 2026-08-03 16:55:00

○A64.74.223.342015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 09:42:22
○ 2015-12-05 17:22:10
○ 2026-08-03 16:55:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
runningcourses.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 runningcourses.com (unsigned zone)

⏱️ Timing

Total: 3049ms | 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

IP Addresses

runningcourses.com resolves to one IP address: 207.148.248.143.

apfs.net, givecomfort.com, melonmate.com and two other host names share IP numbers with runningcourses.com.

Name Servers

DNS delegation for runningcourses.com points to two name servers: this-domain-for-sale.com and ns.buydomains.com.

runningcourses.com uses the same name servers as several other domains — among them retractableroofing.com, earlsworld.com, ketium.com and two more.

runningcourses.com has partial name server overlap with other domains, including georgiacoaching.com.

Both this-domain-for-sale.com and ns.buydomains.com have a single IP address, 52.20.26.87, and share it.

Host names pointing to 52.20.26.87 IP addresses: this-domain-for-sale.com and ns.buydomains.com.

runningcourses.com - robtex.com