🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`agentcontextguide.dev`

DNSSEC	⚠️ Not signed
NS	`jarred.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c7e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c37e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jarred.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:237e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jarred.ns.cloudflare.com`
		A	108.162.195.126^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
		A	162.159.44.126^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
		A	172.64.35.126^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
NS	`ophelia.ns.cloudflare.com`
		A	2606:4700:50::a29f:26f8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ophelia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2f8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ophelia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22f8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ophelia.ns.cloudflare.com`
		A	108.162.194.248^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ophelia.ns.cloudflare.com`
		A	162.159.38.248^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ophelia.ns.cloudflare.com`
		A	172.64.34.248^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ophelia.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c06::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f26.1e100.net`
		A	2607:f8b0:4004:c06::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f27.1e100.net`
		A	2607:f8b0:4004:c07::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f26.1e100.net`
		A	2607:f8b0:4004:c07::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f27.1e100.net`
		A	64.233.180.26^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f26.1e100.net`
			PTR	`pe-in-f26.1e100.net`
		A	142.251.163.26^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f26.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
		A	142.251.179.27^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f27.1e100.net`
TXT	`google-site-verification=Osb1DLtpi6Uwda8m2SYmEqas55EqL41zrK09dTkcRnw`
TXT	`v=spf1 include:_spf.google.com ~all`
SOA	`jarred.ns.cloudflare.com`dns@cloudflare.com serial=2418377566

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

agentcontextguide.com

agentcontextguide.dev

Previous names

Next names

DNS History

3 records (3 active, 0 former)

●NSjarred.ns.cloudflare.com2026-10-24 → 2026-11-07 · 2 obs

● 2026-10-24 12:44:16
● 2026-11-07 14:38:58

●NSophelia.ns.cloudflare.com2026-10-24 → 2026-11-07 · 2 obs

● 2026-10-24 12:44:16
● 2026-11-07 14:38:58

●MXsmtp.google.com2026-10-27 → 2026-11-07 · 2 obs

● 2026-10-27 06:09:40
● 2026-11-07 14:38:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
agentcontextguide.dev	ophelia.ns.cloudflare.com, jarred.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.248

NS records: ophelia.ns.cloudflare.com, jarred.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for agentcontextguide.dev (unsigned zone)

⏱️ Timing

Total: 803ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`jarred.ns.cloudflare.com, ophelia.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=Osb1DLtpi6Uwda8, v=spf1 include:_spf.google.com ~all`
SOA	1	`jarred.ns.cloudflare.com dns.cloudflare.`

Analysis

Name Servers

agentcontextguide.dev uses two name servers for its delegation: jarred.ns.cloudflare.com and ophelia.ns.cloudflare.com.

agentcontextguide.dev has the same name server delegation as a number of other domains, such as vuralbeyaz.shop, nordhaven.site, freeaiagentbooks.dev and two more.

agentcontextguide.dev partially shares its NS delegation with several other domains, including superhanabi99-amp.pages.dev, 07106.my, margaret-taylor-795.pages.dev and two others.

These name servers regularly co-occur with the name servers tom.ns.cloudflare.com, nancy.ns.cloudflare.com and kristin.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

Hostname jarred.ns.cloudflare.com directs to 108.162.195.126, 162.159.44.126 and 172.64.35.126 along with 3 other IP addresses.

Hostname ophelia.ns.cloudflare.com directs to 108.162.194.248, 162.159.38.248 and 172.64.34.248 along with 3 other IP addresses.

Mail Servers

agentcontextguide.dev routes its mail through a single mail server, smtp.google.com.

agentcontextguide.dev has the same mail server arrangement as a number of other domains, for example teacherssretirementsupportsolutions.org, buhleattorneys.co.bw, theprimepetale.com and two more.

The MX records for agentcontextguide.dev are at least partially shared with other domains, such as crtravel.com.co, finagroupinternational.com, advanciblemedia.com and fantaredazione.it.

smtp.google.com directs to 9 IP numbers, including 64.233.180.26, 142.251.163.26 and 142.251.163.27, along with 6 other.

agentcontextguide.dev - robtex.com