`optimumfiber.sbs`

DNSSEC	⚠️ Not signed
A	104.21.94.129^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.136.77^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`katja.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2635^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c235^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`katja.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2235^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`katja.ns.cloudflare.com`
		A	108.162.194.53^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
		A	162.159.38.53^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
		A	172.64.34.53^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
NS	`mark.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b82^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mark.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c182^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mark.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2182^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mark.ns.cloudflare.com`
		A	108.162.193.130^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mark.ns.cloudflare.com`
		A	172.64.33.130^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mark.ns.cloudflare.com`
		A	173.245.59.130^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mark.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.94.129, 172.67.136.77
SOA	`katja.ns.cloudflare.com`dns@cloudflare.com serial=2395311540

`sbs`

	DNSSEC	⚠️ Not signed
	NS	`ns0.centralnic.net` ⭐
	NS	`a.nic.sbs`
	NS	`b.nic.sbs`
	NS	`c.nic.sbs`
	NS	`d.nic.sbs`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1774669155

⚠️ On DNS blocklist: tif

Same first word

optimumfiber.net

optimumfiber.sbs

optimumfiber.com

DNS History

4 records (4 active, 0 former)

●NSkatja.ns.cloudflare.com2026-03-23 → 2026-03-28 · 2 obs

● 2026-03-23 13:04:28
● 2026-03-28 04:10:28

●NSmark.ns.cloudflare.com2026-03-23 → 2026-03-28 · 2 obs

● 2026-03-23 13:04:28
● 2026-03-28 04:10:28

●A104.21.94.1292026-03-23 → 2026-03-28 · 2 obs

● 2026-03-23 13:04:28
● 2026-03-28 04:10:28

●A172.67.136.772026-03-23 → 2026-03-28 · 2 obs

● 2026-03-23 13:04:28
● 2026-03-28 04:10:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
sbs	a.nic.sbs, b.nic.sbs, c.nic.sbs, d.nic.sbs	8 records
optimumfiber.sbs	katja.ns.cloudflare.com, mark.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.53

NS records: katja.ns.cloudflare.com, mark.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for optimumfiber.sbs (unsigned zone)

⏱️ Timing

Total: 432ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.94.129, 172.67.136.77`
NS	2	`katja.ns.cloudflare.com, mark.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`katja.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a.nic.sbs, b.nic.sbs, c.nic.sbs...)

Analysis

IP Addresses

optimumfiber.sbs resolves to two IP numbers: 104.21.94.129 and 172.67.136.77.

Other host names, for instance www.sepakbola.com, m2.coach, florendira.club, moneysmaker.online and seapot.net share IP numbers with optimumfiber.sbs.

Name Servers

optimumfiber.sbs has two name servers: katja.ns.cloudflare.com and mark.ns.cloudflare.com.

optimumfiber.sbs shares the same name server setup as other domains, for example hi-tec.com, magnumboots.com, hi-tecessentials.com, hadithportal.com and universityproducts.com.

optimumfiber.sbs shares some name servers with other domains, for example ihwbd.com, blocktrack.net, swimasl.com, getclearskies.com and zayedali.com.

These name servers are commonly used together with princess.ns.cloudflare.com and yadiel.ns.cloudflare.com.

Host names with six IP numbers: katja.ns.cloudflare.com points to: 2606:4700:50::a29f:2635, 2803:f800:50::6ca2:c235, 2a06:98c1:50::ac40:2235, 108.162.194.53, 162.159.38.53 and 172.64.34.53; mark.ns.cloudflare.com points to: 2606:4700:58::adf5:3b82, 2803:f800:50::6ca2:c182, 2a06:98c1:50::ac40:2182, 108.162.193.130, 172.64.33.130 and 173.245.59.130.

optimumfiber.sbs - robtex.com