`r4.fo`

DNSSEC	🔒 Signed (DS record present)
A	141.148.239.114^{🇳🇱 ORACLE-OCI-31898141.148.224.0/19 OCI}
NS	`bart.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b47^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bart.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c147^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bart.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2147^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bart.ns.cloudflare.com`
		A	108.162.193.71^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.33.71^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.59.71^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`elsa.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a6f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elsa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elsa.ns.cloudflare.com`
		A	108.162.192.111^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	172.64.32.111^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	173.245.58.111^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
MX	`mx01.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
MX	`mx02.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
TXT	`apple-domain=AU673n7NBD1cFdO7`
TXT	`v=spf1 include:icloud.com -all`
SOA	`bart.ns.cloudflare.com`dns@cloudflare.com serial=2409076542

`fo`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.nic.fo`
	NS	`b.nic.fo`
	NS	`c.nic.fo`
	NS	`d.nic.fo`
	NS	`mimi.nic.fo`
	NS	`xn--gurun-jta.nic.fo`
	TXT	`whois: whois.nic.fo`
	TXT	`remarks: Registration information: http://www.nic.fo/`
	TXT	`organisation: FO Council`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1784730061

Same first word

r4.biz

r4.fo

r4.be

r4.com.es

r4.com.br

r4.net.br

r4.no

r4.fr

r4.com.pl

r4.chat

r4.ru

r4.se

r4.nl

r4.hu

r4.cc

r4.cl

r4.com.au

r4.dk

r4.eu

r4.io

r4.net

r4.lt

r4.ai

r4.com

r4.ee

r4.de

r4.co.kr

Similar names

4r.hu

4r.com.br

4r.su

4r.no

4r.de

4r.dk

4r.ru

4r.ms

4r.ma

4r.foundation

4r.nl

4r.eu

4r.com.hk

4r.by

4r.pl

4r.fr

4r.ai

4r.ro

4r.be

4r.cz

4r.ws

4r.lv

4r.org

4r.com

DNS History

5 records (5 active, 0 former)

●NSbart.ns.cloudflare.com2026-05-04 → 2026-07-22 · 2 obs

● 2026-05-04 22:11:54
● 2026-07-22 14:51:16

●NSelsa.ns.cloudflare.com2026-05-04 → 2026-07-22 · 2 obs

● 2026-05-04 22:11:54
● 2026-07-22 14:51:16

●MXmx01.mail.icloud.com2026-05-04 → 2026-07-22 · 2 obs

● 2026-05-04 22:11:54
● 2026-07-22 14:51:16

●MXmx02.mail.icloud.com2026-05-04 → 2026-07-22 · 2 obs

● 2026-05-04 22:11:54
● 2026-07-22 14:51:16

●A141.148.239.1142026-05-04 → 2026-07-22 · 2 obs

● 2026-05-04 22:11:54
● 2026-07-22 14:51:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
fo	a.nic.fo, b.nic.fo, c.nic.fo, d.nic.fo...	12 records
r4.fo	bart.ns.cloudflare.com, elsa.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.71

NS records: bart.ns.cloudflare.com, elsa.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1645ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`141.148.239.114`
NS	2	`bart.ns.cloudflare.com, elsa.ns.cloudflare.com`
MX	2	`mx01.mail.icloud.com (pri: 10), mx02.mail.icloud.com (pri: 10)`
TXT	2	`apple-domain=AU673n7NBD1cFdO7, v=spf1 include:icloud.com -all`
SOA	1	`bart.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.fo, b.nic.fo, c.nic.fo...)

Analysis

IP Addresses

r4.fo directs to one IP number, which is 141.148.239.114.

Name Servers

The NS records for r4.fo delegate to bart.ns.cloudflare.com and elsa.ns.cloudflare.com.

r4.fo has the same name server delegation as a number of other domains, such as simc1.com, cadex.com, benxeyewear.com and two more.

There is at least partial name server overlap between r4.fo and other domains — nodeposit.ai, yorkit.ca, kentarchives.org.uk and two more among them.

These name servers frequently co-occur with the name servers hera.ns.cloudflare.com and trace.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

bart.ns.cloudflare.com maps to 108.162.193.71, 172.64.33.71, 173.245.59.71 and 3 additional IP addresses.

elsa.ns.cloudflare.com maps to 108.162.192.111, 172.64.32.111, 173.245.58.111 and 3 additional IP addresses.

Mail Servers

The MX records for r4.fo point to two mail servers: mx01.mail.icloud.com and mx02.mail.icloud.com.

r4.fo has the same mail server arrangement as a number of other domains, for example gorelik.us, maibaum.org, squibphotography.co.uk and two more.

Host names resolving to 6 IP numbers:

mx01.mail.icloud.com maps to 17.42.251.62, 17.56.9.31, 17.57.152.5 and 3 additional IP addresses.

mx02.mail.icloud.com maps to 17.42.251.62, 17.56.9.31, 17.57.152.5 and 3 additional IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.42.251.62 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.56.9.31 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.152.5 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.154.33 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.155.25 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.156.30 IP addresses.