fcos.dev - dns.ninja

`fcos.dev`

DNSSEC	⚠️ Not signed
NS	`isla.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a77^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c077^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`isla.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2077^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`isla.ns.cloudflare.com`
		A	108.162.192.119^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
		A	172.64.32.119^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
		A	173.245.58.119^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
NS	`phil.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b89^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`phil.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c189^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`phil.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2189^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`phil.ns.cloudflare.com`
		A	108.162.193.137^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`phil.ns.cloudflare.com`
		A	172.64.33.137^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`phil.ns.cloudflare.com`
		A	173.245.59.137^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`phil.ns.cloudflare.com`
MX	`mx2.zoho.com` ⭐
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽²⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
TXT	`v=spf1 include:one.zoho.com include:_spf.mx.cloudflare.net ~all`
TXT	`zoho-verification=zb17629770.zmverify.zoho.com`
SOA	`isla.ns.cloudflare.com`dns@cloudflare.com serial=2410409572

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Subdomains

uptime.fcos.dev

Same first word

fcos.uk

fcos.ie

fcos.ru

fcos.club

fcos.gov.uk

fcos.ch

fcos.org

fcos.dev

fcos.eu

fcos.com

fcos.app

fcos.de

fcos.jp

Similar names

osfc.ie

ofsc.ru

sofc.org

csfo.de

fosc.co.jp

focs.info

cofs.us

scfo.se

sofc.com.cn

sfco.it

scof.ru

scfo.org

fcso.it

sfoc.org

scof.ch

cofs.ru

fcso.us

cfso.org

focs.ca

ocfs.co.uk

cofs.fr

fsco.co.uk

osfc.com

csof.fr

ofsc.org

focs.ru

cfos.eu

sofc.cn

sfoc.de

fsoc.ru

cofs.com.br

fcso.net

cosf.ch

sfco.co.uk

fsco.fm

fosc.be

cfos.today

sofc.nl

scfo.co.il

fosc.net

sofc.es

scof.de

scof.pt

fsco.com.pk

sfco.de

ofcs.net

focs.co.jp

ofcs.org

fsco.hk

csof.net

sfco.es

cosf.ru

sofc.jp

scof.academy

fsco.eu

csof.com

focs.de

fosc.org.uk

cfos.tv

oscf.net

fsco.io

ofcs.top

osfc.io

fsoc.hu

focs.com

fsco.net

ocsf.or.th

sofc.pl

focs.com.br

focs.org.br

cfos.co.kr

fosc.de

sfco.eu

fcso.org

osfc.net

csfo.be

fosc.it

cosf.org

cofs.org

osfc.ac.uk

sofc.fr

ocfs.com

focs.eu

fsoc.vn

cfos.de

focs.org

sofc.dk

focs.kr

fsco.ru

fosc.jp

ofcs.report

cfso.net

ofcs.ru

ocfs.nl

fosc.gr

DNS History

8 records (5 active, 3 former)

●NSisla.ns.cloudflare.com2026-03-06 → 2026-07-24 · 2 obs

● 2026-03-06 04:19:40
● 2026-07-24 23:50:38

●NSphil.ns.cloudflare.com2026-03-06 → 2026-07-24 · 2 obs

● 2026-03-06 04:19:40
● 2026-07-24 23:50:38

●MXmx.zoho.com2026-05-14 → 2026-07-24 · 3 obs

○ 2026-05-07 22:06:28
● 2026-05-14 14:26:16
● 2026-07-24 23:50:38

●MXmx2.zoho.com2026-05-14 → 2026-07-24 · 3 obs

○ 2026-05-07 22:06:28
● 2026-05-14 14:26:16
● 2026-07-24 23:50:38

●MXmx3.zoho.com2026-05-14 → 2026-07-24 · 3 obs

○ 2026-05-07 22:06:28
● 2026-05-14 14:26:16
● 2026-07-24 23:50:38

○MXroute1.mx.cloudflare.net2026-03-06 → 2026-05-07 · 4 obs

● 2026-03-06 04:19:40
● 2026-05-07 22:06:28
○ 2026-05-14 14:26:16
○ 2026-07-24 23:50:38

○MXroute2.mx.cloudflare.net2026-03-06 → 2026-05-07 · 4 obs

● 2026-03-06 04:19:40
● 2026-05-07 22:06:28
○ 2026-05-14 14:26:16
○ 2026-07-24 23:50:38

○MXroute3.mx.cloudflare.net2026-03-06 → 2026-05-07 · 4 obs

● 2026-03-06 04:19:40
● 2026-05-07 22:06:28
○ 2026-05-14 14:26:16
○ 2026-07-24 23:50:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
fcos.dev	isla.ns.cloudflare.com, phil.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.137

NS records: isla.ns.cloudflare.com, phil.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fcos.dev (unsigned zone)

⏱️ Timing

Total: 887ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`isla.ns.cloudflare.com, phil.ns.cloudflare.com`
MX	3	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 20)...`
TXT	2	`v=spf1 include:one.zoho.com include:_spf, zoho-verification=zb17629770.zmverify.zo`
SOA	1	`isla.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

fcos.dev is the parent zone for uptime.fcos.dev.

Name Servers

fcos.dev is delegated to two name servers: isla.ns.cloudflare.com and phil.ns.cloudflare.com.

fcos.dev shares its name server setup with other domains, including paperphile.in, rrys5.com, douyu001.com and two others.

fcos.dev partially shares its NS delegation with several other domains, including aqualife.com.mx, laks.com, adnecto.biz and two others.

These name servers often co-occur with the name servers sue.ns.cloudflare.com.

Host names with 6 IP numbers:

isla.ns.cloudflare.com resolves to 108.162.192.119, 172.64.32.119, 173.245.58.119 and 3 other IP addresses.

phil.ns.cloudflare.com resolves to 108.162.193.137, 172.64.33.137, 173.245.59.137 and 3 other IP addresses.

Mail Servers

fcos.dev uses three mail servers — mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

fcos.dev shares mail servers — at least in part — with other domains, including coolsensecenterspa.com, clickwitty.com, verdyyong.com and two others.

mx2.zoho.com resolves to 136.143.183.44, while mx3.zoho.com and mx.zoho.com both resolve to 204.141.43.44.

mx3.zoho.com and mx.zoho.com are host names that each point to 204.141.43.44 IP addresses.