`professional-standards.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:1f5a^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:b028^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.31.90^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.176.40^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`david.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b98^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`david.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c198^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`david.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2198^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`david.ns.cloudflare.com`
		A	108.162.193.152^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`david.ns.cloudflare.com`
		A	172.64.33.152^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`david.ns.cloudflare.com`
		A	173.245.59.152^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`david.ns.cloudflare.com`
NS	`lina.ns.cloudflare.com`
		A	2606:4700:50::adf5:3abb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0bb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20bb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lina.ns.cloudflare.com`
		A	108.162.192.187^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	172.64.32.187^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	173.245.58.187^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.31.90, 172.67.176.40
		IPv6 hints	2606:4700:3030::6815:1f5a, 2606:4700:3034::ac43:b028
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=74, name=cloudflare-ech.com
SOA	`david.ns.cloudflare.com`dns@cloudflare.com serial=2401759006

`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=1778625971

Same first word

professional-standards.com

professional-standards.net

Similar names

randstad-professionals.de

randstad-professionals.be

DNS History

12 records (6 active, 6 former)

●NSdavid.ns.cloudflare.com2026-04-29 → 2026-05-12 · 3 obs

○ 2017-03-30 18:53:44
● 2026-04-29 04:59:48
● 2026-05-12 23:07:04

●NSlina.ns.cloudflare.com2026-04-29 → 2026-05-12 · 3 obs

○ 2017-03-30 18:53:44
● 2026-04-29 04:59:48
● 2026-05-12 23:07:04

○NSns75.domaincontrol.com2015-08-18 → 2017-03-30 · 4 obs

● 2015-08-18 22:54:24
● 2017-03-30 18:53:44
○ 2026-04-29 04:59:48
○ 2026-05-12 23:07:04

○NSns76.domaincontrol.com2015-08-18 → 2017-03-30 · 4 obs

● 2015-08-18 22:54:24
● 2017-03-30 18:53:44
○ 2026-04-29 04:59:48
○ 2026-05-12 23:07:04

○MXmailstore1.secureserver.net2015-08-18 → 2017-03-30 · 4 obs

● 2015-08-18 22:54:24
● 2017-03-30 18:53:44
○ 2026-04-29 04:59:48
○ 2026-05-12 23:07:04

○MXsmtp.secureserver.net2015-08-18 → 2017-03-30 · 4 obs

● 2015-08-18 22:54:24
● 2017-03-30 18:53:44
○ 2026-04-29 04:59:48
○ 2026-05-12 23:07:04

●A104.21.31.902026-04-29 → 2026-05-12 · 3 obs

○ 2017-03-30 18:53:44
● 2026-04-29 04:59:48
● 2026-05-12 23:07:04

●A172.67.176.402026-04-29 → 2026-05-12 · 3 obs

○ 2017-03-30 18:53:44
● 2026-04-29 04:59:48
● 2026-05-12 23:07:04

○A173.201.216.982015-08-18 → 2015-08-18 · 3 obs

● 2015-08-18 22:54:24
○ 2015-12-11 07:40:48
○ 2026-05-12 23:07:04

○A184.168.221.352015-12-11 → 2017-03-30 · 5 obs

○ 2015-08-18 22:54:24
● 2015-12-11 07:40:48
● 2017-03-30 18:53:44
○ 2026-04-29 04:59:48
○ 2026-05-12 23:07:04

●A2606:4700:3030::6815:1f5a2026-04-29 → 2026-05-12 · 3 obs

○ 2017-03-30 18:53:44
● 2026-04-29 04:59:48
● 2026-05-12 23:07:04

●A2606:4700:3034::ac43:b0282026-04-29 → 2026-05-12 · 3 obs

○ 2017-03-30 18:53:44
● 2026-04-29 04:59:48
● 2026-05-12 23:07:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, e.gtld-servers.net, k.gtld-servers.net, g.gtld-servers.net...	-
professional-standards.com	david.ns.cloudflare.com, lina.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.187

NS records: david.ns.cloudflare.com, lina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for professional-standards.com (unsigned zone)

⏱️ Timing

Total: 288ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.176.40, 104.21.31.90`
AAAA	2	`2606:4700:3034::ac43:b028, 2606:4700:3030::6815:1f5a`
NS	2	`david.ns.cloudflare.com, lina.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`david.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

professional-standards.com resolves to four IPs: 2606:4700:3030::6815:1f5a, 2606:4700:3034::ac43:b028, 104.21.31.90 and 172.67.176.40.

Other host names such as ovakopi.com, ns.it-001.com, duijntax.com, 123kid.club and trapplanet.com share IP numbers with professional-standards.com.

Name Servers

professional-standards.com is delegated to two name servers: david.ns.cloudflare.com and lina.ns.cloudflare.com.

professional-standards.com uses the same name server setup as other domains, including rxdqxb.surf, xfivecdn.com, safeandsanitaryhomes.org, nexusera.com and bigbentortosa.com.

At least part of the name servers for professional-standards.com are shared with other domains, for instance dgiusa.com, martin-helmich.de, karadar.org, marilu.com.br and screwanchoring.com.

These name servers are often used together with joyce.ns.cloudflare.com, simon.ns.cloudflare.com and sevki.ns.cloudflare.com.

Host names with six IP numbers:

david.ns.cloudflare.com points to: 2606:4700:58::adf5:3b98, 2803:f800:50::6ca2:c198, 2a06:98c1:50::ac40:2198, 108.162.193.152, 172.64.33.152 and 173.245.59.152.

lina.ns.cloudflare.com points to: 2606:4700:50::adf5:3abb, 2803:f800:50::6ca2:c0bb, 2a06:98c1:50::ac40:20bb, 108.162.192.187, 172.64.32.187 and 173.245.58.187.

professional-standards.com - robtex.com