`certuscore.com`

DNSSEC	⚠️ Not signed
A	198.202.211.1^{🇺🇸 CLOUDFLARESPECTRUM198.202.211.0/24 Webflow}
NS	`jaxson.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cdd^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaxson.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3dd^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jaxson.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23dd^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jaxson.ns.cloudflare.com`
		A	108.162.195.221^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaxson.ns.cloudflare.com`
		A	162.159.44.221^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaxson.ns.cloudflare.com`
		A	172.64.35.221^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaxson.ns.cloudflare.com`
NS	`sarah.ns.cloudflare.com`
		A	2606:4700:50::a29f:26da^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sarah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2da^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sarah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22da^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sarah.ns.cloudflare.com`
		A	108.162.194.218^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sarah.ns.cloudflare.com`
		A	162.159.38.218^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sarah.ns.cloudflare.com`
		A	172.64.34.218^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sarah.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f26.1e100.net`
		A	142.250.31.27^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=WeZlI5WCiOoKhS1vLaIqiU-5ruZuXUWNJPxWmMBP5HE`
TXT	`v=spf1 include:_spf.google.com -all`
SOA	`jaxson.ns.cloudflare.com`dns@cloudflare.com serial=2405423889

`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=1784070592

Same first word

certuscore.com

Similar names

ctresource.com.sg

coursecert.com

DNS History

8 records (8 active, 0 former)

●NSjaxson.ns.cloudflare.com2026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

●NSsarah.ns.cloudflare.com2026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

●MXalt1.aspmx.l.google.com2026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

●MXalt2.aspmx.l.google.com2026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

●MXalt3.aspmx.l.google.com2026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

●MXalt4.aspmx.l.google.com2026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

●MXaspmx.l.google.com2026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

●A198.202.211.12026-06-03 → 2026-07-14 · 2 obs

● 2026-06-03 05:50:06
● 2026-07-14 23:18:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
certuscore.com	sarah.ns.cloudflare.com, jaxson.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.218

NS records: sarah.ns.cloudflare.com, jaxson.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certuscore.com (unsigned zone)

⏱️ Timing

Total: 290ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`198.202.211.1`
NS	2	`jaxson.ns.cloudflare.com, sarah.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=WeZlI5WCiOoKhS1, v=spf1 include:_spf.google.com -all`
SOA	1	`jaxson.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

certuscore.com points to a single IP number: 198.202.211.1.

Additional host names — iws-hi.com, aiido.com, hansadata.com and two others — share IP numbers with certuscore.com.

Name Servers

The NS records for certuscore.com delegate to jaxson.ns.cloudflare.com and sarah.ns.cloudflare.com.

certuscore.com shares its name server setup with other domains, including map-idevice.online, livemap-device.app, wondr.io and two others.

The name servers of certuscore.com overlap at least partially with those of other domains — among them lisaemarkmd.com, access.sb, axz.co.uk and two more.

These name servers are frequently paired with the name servers tricia.ns.cloudflare.com, agustin.ns.cloudflare.com, melinda.ns.cloudflare.com and two others.

Host names with 6 IP numbers:

jaxson.ns.cloudflare.com maps to 108.162.195.221, 162.159.44.221, 172.64.35.221 and 3 additional IP addresses.

sarah.ns.cloudflare.com maps to 108.162.194.218, 162.159.38.218, 172.64.34.218 and 3 additional IP addresses.

Mail Servers

Five mail servers handle certuscore.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

certuscore.com shares mail servers — at least in part — with other domains, including vnreview.vn, mightyhouseconstruction.com, eltivi.com and two others.

These mail servers are frequently used alongside mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other.

Host names with two IP numbers:

The A records for aspmx.l.google.com return 142.250.31.27 and 2607:f8b0:4004:c1b::1a.

The A records for alt1.aspmx.l.google.com return 108.177.123.26 and 2800:3f0:4003:c0f::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1a.

The A records for alt3.aspmx.l.google.com return 192.178.223.26 and 2a00:1450:4009:c0f::1a.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1a.