`grsysb.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:96ca^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:5b^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.0.91^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.150.202^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`grannbo.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2696^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grannbo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c296^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`grannbo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2296^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`grannbo.ns.cloudflare.com`
		A	108.162.194.150^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grannbo.ns.cloudflare.com`
		A	162.159.38.150^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grannbo.ns.cloudflare.com`
		A	172.64.34.150^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grannbo.ns.cloudflare.com`
NS	`isaac.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bb1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isaac.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`isaac.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`isaac.ns.cloudflare.com`
		A	108.162.193.177^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isaac.ns.cloudflare.com`
		A	172.64.33.177^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isaac.ns.cloudflare.com`
		A	173.245.59.177^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isaac.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.0.91, 172.67.150.202
		IPv6 hints	2606:4700:3030::ac43:96ca, 2606:4700:3031::6815:5b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=241, name=cloudflare-ech.com
SOA	`grannbo.ns.cloudflare.com`dns@cloudflare.com serial=2409770465

`com`

	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=1785473912

Same first word

grsysb.com

Similar names

bgrsys.com

rbgsys.com

sygrsb.com

DNS History

19 records (6 active, 13 former)

○NSdns31.hichina.com2015-05-30 → 2016-09-17 · 4 obs

● 2015-05-30 08:42:18
● 2016-09-17 17:11:20
○ 2019-01-11 04:40:28
○ 2026-07-31 05:09:56

○NSdns32.hichina.com2015-05-30 → 2016-09-17 · 4 obs

● 2015-05-30 08:42:18
● 2016-09-17 17:11:20
○ 2019-01-11 04:40:28
○ 2026-07-31 05:09:56

○NSexpire1.gname-dns.com2026-03-28 → 2026-07-31 · 2 obs

○ 2026-03-28 08:06:36
○ 2026-07-31 05:09:56

○NSexpire2.gname-dns.com2026-03-28 → 2026-07-31 · 2 obs

○ 2026-03-28 08:06:36
○ 2026-07-31 05:09:56

●NSgrannbo.ns.cloudflare.com2026-06-22 → 2026-07-31 · 3 obs

○ 2026-03-30 15:42:38
● 2026-06-22 05:33:28
● 2026-07-31 05:09:56

●NSisaac.ns.cloudflare.com2026-06-22 → 2026-07-31 · 3 obs

○ 2026-03-30 15:42:38
● 2026-06-22 05:33:28
● 2026-07-31 05:09:56

○NSjuming.dnsdun.com2019-01-11 → 2019-01-11 · 4 obs

○ 2016-09-17 17:11:20
● 2019-01-11 04:40:28
○ 2026-03-28 08:06:36
○ 2026-07-31 05:09:56

○NSjuming.dnsdun.net2019-01-11 → 2019-01-11 · 4 obs

○ 2016-09-17 17:11:20
● 2019-01-11 04:40:28
○ 2026-03-28 08:06:36
○ 2026-07-31 05:09:56

○NSns1.sgaddress.net2026-03-28 → 2026-03-30 · 5 obs

○ 2019-01-11 04:40:28
● 2026-03-28 08:06:36
● 2026-03-30 15:42:38
○ 2026-06-22 05:33:28
○ 2026-07-31 05:09:56

○NSns2.sgaddress.net2026-03-28 → 2026-03-30 · 5 obs

○ 2019-01-11 04:40:28
● 2026-03-28 08:06:36
● 2026-03-30 15:42:38
○ 2026-06-22 05:33:28
○ 2026-07-31 05:09:56

○MXmxbiz1.qq.com2015-05-30 → 2016-09-17 · 4 obs

● 2015-05-30 08:42:18
● 2016-09-17 17:11:20
○ 2019-01-11 04:40:28
○ 2026-07-31 05:09:56

○MXmxbiz2.qq.com2015-05-30 → 2016-09-17 · 4 obs

● 2015-05-30 08:42:18
● 2016-09-17 17:11:20
○ 2019-01-11 04:40:28
○ 2026-07-31 05:09:56

●A104.21.0.912026-06-22 → 2026-07-31 · 3 obs

○ 2026-03-28 08:06:36
● 2026-06-22 05:33:28
● 2026-07-31 05:09:56

●A172.67.150.2022026-06-22 → 2026-07-31 · 3 obs

○ 2026-03-28 08:06:36
● 2026-06-22 05:33:28
● 2026-07-31 05:09:56

○A23.110.59.432019-01-11 → 2019-01-11 · 4 obs

○ 2016-09-17 17:11:20
● 2019-01-11 04:40:28
○ 2026-03-28 08:06:36
○ 2026-07-31 05:09:56

●A2606:4700:3030::ac43:96ca2026-06-22 → 2026-07-31 · 3 obs

○ 2026-03-28 08:06:36
● 2026-06-22 05:33:28
● 2026-07-31 05:09:56

●A2606:4700:3031::6815:5b2026-06-22 → 2026-07-31 · 3 obs

○ 2026-03-28 08:06:36
● 2026-06-22 05:33:28
● 2026-07-31 05:09:56

○A61.191.50.1102015-05-30 → 2016-09-17 · 4 obs

● 2015-05-30 08:42:18
● 2016-09-17 17:11:20
○ 2019-01-11 04:40:28
○ 2026-07-31 05:09:56

○CNAMEexp.gs-cdn.com2026-03-28 → 2026-07-31 · 2 obs

○ 2026-03-28 08:06:36
○ 2026-07-31 05:09:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, m.gtld-servers.net, h.gtld-servers.net, k.gtld-servers.net...	-
grsysb.com	isaac.ns.cloudflare.com, grannbo.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.177

NS records: isaac.ns.cloudflare.com, grannbo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grsysb.com (unsigned zone)

⏱️ Timing

Total: 163ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.150.202, 104.21.0.91`
AAAA	2	`2606:4700:3030::ac43:96ca, 2606:4700:3031::6815:5b`
NS	2	`grannbo.ns.cloudflare.com, isaac.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`grannbo.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (isaac.ns.cloudflare.com, isaac.ns.cloudflare.com, isaac.ns.cloudflare.com...)

Analysis

IP Addresses

grsysb.com resolves to four IP addresses: 104.21.0.91, 172.67.150.202, 2606:4700:3030::ac43:96ca and 2606:4700:3031::6815:5b.

www.nursesfornurses.com.au, andrewpetersonjewellery.com, dlhtakalar.org plus two other host names have IP numbers in common with grsysb.com.

Name Servers

The NS records for grsysb.com delegate to grannbo.ns.cloudflare.com and isaac.ns.cloudflare.com.

The name server configuration of grsysb.com is shared with other domains, for instance wisdommom.com, v2alia8.com, sdok.no and two others.

grsysb.com shares at least some of its name servers with other domains, including ayuntamientovirtualpr.com.mx, ikhlc0q1nzg8.today, 7-baxterbet28.com and two others.

These name servers are frequently paired with the name servers dexter.ns.cloudflare.com and norm.ns.cloudflare.com.

Hosts with 6 IP addresses each:

grannbo.ns.cloudflare.com maps to 108.162.194.150, 162.159.38.150, 172.64.34.150 and 3 additional IP addresses.

isaac.ns.cloudflare.com maps to 108.162.193.177, 172.64.33.177, 173.245.59.177 and 3 additional IP addresses.

grsysb.com - robtex.com

grsysb.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`grsysb.com`

`com`