`fcbackoffice.net`

DNSSEC	⚠️ Not signed
A	104.21.56.11^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.175.172^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`courtney.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2682^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c282^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`courtney.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2282^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`courtney.ns.cloudflare.com`
		A	108.162.194.130^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	162.159.38.130^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	172.64.34.130^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
NS	`dave.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b6d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dave.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dave.ns.cloudflare.com`
		A	108.162.193.109^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
		A	172.64.33.109^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
		A	173.245.59.109^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
HTTPS	HTTP/2 ✓ hints match
		IPv4	104.21.56.11, 172.67.175.172
SOA	`courtney.ns.cloudflare.com`dns@cloudflare.com serial=2397306976

`net`

	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=1771291465

⚠️ On DNS blocklist: tif

Same first word

fcbackoffice.net

fcbackoffice.com

DNS History

4 records (4 active, 0 former)

●NScourtney.ns.cloudflare.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 02:19:24
● 2026-03-24 09:56:08

●NSdave.ns.cloudflare.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 02:19:24
● 2026-03-24 09:56:08

●A104.21.56.112026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 02:19:24
● 2026-03-24 09:56:08

●A172.67.175.1722026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 02:19:24
● 2026-03-24 09:56:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
fcbackoffice.net	dave.ns.cloudflare.com, courtney.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.109

NS records: dave.ns.cloudflare.com, courtney.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fcbackoffice.net (unsigned zone)

⏱️ Timing

Total: 353ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.56.11, 172.67.175.172`
NS	2	`courtney.ns.cloudflare.com, dave.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`courtney.ns.cloudflare.com dns.cloudflar`

Analysis

IP Addresses

fcbackoffice.net has two IP numbers: 104.21.56.11 and 172.67.175.172.

Other host names, for instance euogo.com, etcsimjj.vip, webmail.soilsupporting.com, zoomfans.com and donboscoschoolbd.com share IP numbers with fcbackoffice.net.

Name Servers

fcbackoffice.net's delegation uses two name servers: courtney.ns.cloudflare.com and dave.ns.cloudflare.com.

fcbackoffice.net uses the same name server setup as other domains, such as viagra-canada.com, insuremyliferight.com, etopal.com, fcbackoffice.com and guideblogging.com.

fcbackoffice.net at least partially shares name servers with other domains, including hanbaoqiuduiguanfangwangzhan.net.cn, microgrup.com, endpointprotector.com, exifmap.com and hothookups.com.au.

These name servers are often used with mimi.ns.cloudflare.com and dana.ns.cloudflare.com.

Host names with six IP numbers:

courtney.ns.cloudflare.com points to 2606:4700:50::a29f:2682, 2803:f800:50::6ca2:c282, 2a06:98c1:50::ac40:2282, 108.162.194.130, 162.159.38.130 and 172.64.34.130.

dave.ns.cloudflare.com points to 2606:4700:58::adf5:3b6d, 2803:f800:50::6ca2:c16d, 2a06:98c1:50::ac40:216d, 108.162.193.109, 172.64.33.109 and 173.245.59.109.

fcbackoffice.net - robtex.com