`sysusr.com`

DNSSEC	⚠️ Not signed
A	149.28.200.104^{🇺🇸 AS-VULTR149.28.192.0/19 Vultr Assigned Prefix}
		PTR	`149.28.200.104.vultrusercontent.com`
NS	`kevin.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bbf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1bf^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kevin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21bf^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kevin.ns.cloudflare.com`
		A	108.162.193.191^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
		A	172.64.33.191^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
		A	173.245.59.191^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kevin.ns.cloudflare.com`
NS	`lara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a80^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c080^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2080^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lara.ns.cloudflare.com`
		A	108.162.192.128^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
		A	172.64.32.128^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
		A	173.245.58.128^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lara.ns.cloudflare.com`
MX	`mx1.feishu.cn` ⭐
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.feishu.cn`⁽⁵⁾
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
MX	`mx3.feishu.cn`⁽¹⁰⁾
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`v=spf1 +include:_netblocks.m.feishu.cn -all`
TXT	`verification-code-site-App_feishu=Qg3cNHm38E3iO4ugjuiV`
SOA	`kevin.ns.cloudflare.com`dns@cloudflare.com serial=2399078723

`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=1774587847

Same first word

sysusr.com

Similar names

sursys.com

syruss.com

sursys.ru

russys.ru

DNS History

15 records (6 active, 9 former)

○NSdns1.registrar-servers.com2019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

○NSdns2.registrar-servers.com2019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

●NSkevin.ns.cloudflare.com2026-03-27 → 2026-03-27 · 2 obs

○ 2019-03-06 16:40:42
● 2026-03-27 05:18:12

●NSlara.ns.cloudflare.com2026-03-27 → 2026-03-27 · 2 obs

○ 2019-03-06 16:40:42
● 2026-03-27 05:18:12

○MXeforward1.registrar-servers.com2019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

○MXeforward2.registrar-servers.com2019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

○MXeforward3.registrar-servers.com2019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

○MXeforward4.registrar-servers.com2019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

○MXeforward5.registrar-servers.com2019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

●MXmx1.feishu.cn2026-03-27 → 2026-03-27 · 2 obs

○ 2019-03-06 16:40:42
● 2026-03-27 05:18:12

●MXmx2.feishu.cn2026-03-27 → 2026-03-27 · 2 obs

○ 2019-03-06 16:40:42
● 2026-03-27 05:18:12

●MXmx3.feishu.cn2026-03-27 → 2026-03-27 · 2 obs

○ 2019-03-06 16:40:42
● 2026-03-27 05:18:12

●A149.28.200.1042026-03-27 → 2026-03-27 · 2 obs

○ 2019-03-06 16:40:42
● 2026-03-27 05:18:12

○A192.64.119.2172019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

○A207.148.91.1132019-03-06 → 2019-03-06 · 2 obs

● 2019-03-06 16:40:42
○ 2026-03-27 05:18:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, g.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net...	-
sysusr.com	lara.ns.cloudflare.com, kevin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.128

NS records: lara.ns.cloudflare.com, kevin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sysusr.com (unsigned zone)

⏱️ Timing

Total: 183ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`149.28.200.104`
NS	2	`kevin.ns.cloudflare.com, lara.ns.cloudflare.com`
MX	3	`mx1.feishu.cn (pri: 1), mx3.feishu.cn (pri: 10)...`
TXT	2	`v=spf1 +include:_netblocks.m.feishu.cn -, verification-code-site-App_feishu=Qg3cNH`
SOA	1	`kevin.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

sysusr.com points to a single IP: 149.28.200.104.

Name Servers

Two name servers kevin.ns.cloudflare.com and lara.ns.cloudflare.com handle delegation for sysusr.com.

sysusr.com uses the same name server setup as other domains, for example jamesmorrell.com, democracyforsale.net, victoriangreens.org, davidshoebridge.org.au and kulart.ru.

sysusr.com partially shares name servers with other domains; examples include blackradicalimagination.com, galeriaespana.cz, castleblinds.net, boonit.nl and mahya.com.

These name servers are often used with the name servers jeff.ns.cloudflare.com and dina.ns.cloudflare.com.

Host names with six IP numbers: kevin.ns.cloudflare.com points to: 2606:4700:58::adf5:3bbf, 2803:f800:50::6ca2:c1bf, 2a06:98c1:50::ac40:21bf, 108.162.193.191, 172.64.33.191 and 173.245.59.191; lara.ns.cloudflare.com points to: 2606:4700:50::adf5:3a80, 2803:f800:50::6ca2:c080, 2a06:98c1:50::ac40:2080, 108.162.192.128, 172.64.32.128 and 173.245.58.128.

Mail Servers

sysusr.com is handled by three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

sysusr.com shares some mail servers with other domains, at least partially, such as coscene.cn, briocean.com, wukongsch.net, zrhealth.com and tarab.cloud.