`rtrcourse.org`

DNSSEC	⚠️ Not signed
A	192.64.119.233^{🇺🇸 NAMCHEAP-PH192.64.119.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
NS	`dns1.registrar-servers.com` ⭐
		A	2610:a1:1024::200^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
		A	156.154.132.200^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
NS	`dns2.registrar-servers.com`
		A	2610:a1:1025::200^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
		A	156.154.133.200^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
MX	`eforward1.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward2.registrar-servers.com` ⭐
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward3.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward4.registrar-servers.com`⁽¹⁵⁾
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward5.registrar-servers.com`⁽²⁰⁾
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com ~all`
SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1738001762

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1774530124

Same first word

rtrcourse.org

DNS History

8 records (8 active, 0 former)

●NSdns1.registrar-servers.com2026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

●NSdns2.registrar-servers.com2026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

●MXeforward1.registrar-servers.com2026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

●MXeforward2.registrar-servers.com2026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

●MXeforward3.registrar-servers.com2026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

●MXeforward4.registrar-servers.com2026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

●MXeforward5.registrar-servers.com2026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

●A192.64.119.2332026-02-15 → 2026-03-26 · 2 obs

● 2026-02-15 19:48:12
● 2026-03-26 13:25:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
rtrcourse.org	dns1.registrar-servers.com, dns2.registrar-servers.com	-

✅ Authoritative Response

Server:156.154.133.200

NS records: dns1.registrar-servers.com, dns2.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtrcourse.org (unsigned zone)

⏱️ Timing

Total: 513ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`192.64.119.233`
NS	2	`dns1.registrar-servers.com, dns2.registrar-servers.com`
MX	5	`eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10...`
TXT	1	`v=spf1 include:spf.efwd.registrar-server`
SOA	1	`dns1.registrar-servers.com hostmaster.re`

Analysis

IP Addresses

rtrcourse.org points to a single IP: 192.64.119.233.

Other host names, for instance heritagecs.ca, animesonlinegg.com, timexdate.com, medolon.com and soymestizo.com share IP numbers with rtrcourse.org.

Name Servers

Two name servers dns1.registrar-servers.com and dns2.registrar-servers.com handle delegation for rtrcourse.org.

rtrcourse.org uses the same name server setup as other domains, for example nickskithreevalleys.co.uk, elif-key.com, onlineprofitrevolution.com, buicore.com and inukakenya.org.

rtrcourse.org shares name servers with other domains at least partially, for instance infotothepeople.com, glympsegroups.com and schematic.org.

These name servers are commonly used with dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.

Host names with two IP numbers:

dns1.registrar-servers.com points to: 2610:a1:1024::200 and 156.154.132.200

dns2.registrar-servers.com points to: 2610:a1:1025::200 and 156.154.133.200

Mail Servers

Five mail servers handle rtrcourse.org: eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com, eforward4.registrar-servers.com and eforward5.registrar-servers.com.

rtrcourse.org shares some mail servers with other domains, at least partially, such as writingjobz.com, compurol.com, zohor.co, visualicious.com and mysecops.com.