`ac-knowledge.net`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:206^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:306^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:45e8^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.2.6^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.3.6^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.69.232^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`john.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bb9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`john.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`john.ns.cloudflare.com`
		A	108.162.193.185^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	172.64.33.185^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	173.245.59.185^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
NS	`pat.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a8b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c08b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`pat.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:208b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`pat.ns.cloudflare.com`
		A	108.162.192.139^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
		A	172.64.32.139^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
		A	173.245.58.139^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
TXT	`i4cp0lbkfi2m69hgcd4a6o3huh`
TXT	`v=spf1 include:spf.smtp2go.com ?all`
HTTPS	HTTP/2 ✓ hints match
		IPv4	104.26.2.6, 104.26.3.6, 172.67.69.232
		IPv6	2606:4700:20::681a:206, 2606:4700:20::681a:306, 2606:4700:20::ac43:45e8
SOA	`john.ns.cloudflare.com`dns@cloudflare.com serial=2397937300

`net`

	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=1771291465

Subdomains

www.ac-knowledge.net

Same first word

ac-knowledge.net

DNS History

15 records (8 active, 7 former)

●NSjohn.ns.cloudflare.com2026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

○NSns10.dnsmadeeasy.com2015-07-04 → 2016-08-19 · 4 obs

● 2015-07-04 12:58:42
● 2016-08-19 09:37:32
○ 2026-02-17 02:01:12
○ 2026-03-24 12:50:54

○NSns11.dnsmadeeasy.com2015-07-04 → 2016-08-19 · 4 obs

● 2015-07-04 12:58:42
● 2016-08-19 09:37:32
○ 2026-02-17 02:01:12
○ 2026-03-24 12:50:54

○NSns12.dnsmadeeasy.com2015-07-04 → 2016-08-19 · 4 obs

● 2015-07-04 12:58:42
● 2016-08-19 09:37:32
○ 2026-02-17 02:01:12
○ 2026-03-24 12:50:54

○NSns13.dnsmadeeasy.com2015-07-04 → 2016-08-19 · 4 obs

● 2015-07-04 12:58:42
● 2016-08-19 09:37:32
○ 2026-02-17 02:01:12
○ 2026-03-24 12:50:54

○NSns14.dnsmadeeasy.com2015-07-04 → 2016-08-19 · 4 obs

● 2015-07-04 12:58:42
● 2016-08-19 09:37:32
○ 2026-02-17 02:01:12
○ 2026-03-24 12:50:54

○NSns15.dnsmadeeasy.com2015-07-04 → 2016-08-19 · 4 obs

● 2015-07-04 12:58:42
● 2016-08-19 09:37:32
○ 2026-02-17 02:01:12
○ 2026-03-24 12:50:54

●NSpat.ns.cloudflare.com2026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

●A104.26.2.62026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

●A104.26.3.62026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

●A172.67.69.2322026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

●A2606:4700:20::681a:2062026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

●A2606:4700:20::681a:3062026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

●A2606:4700:20::ac43:45e82026-02-17 → 2026-03-24 · 3 obs

○ 2016-08-19 09:37:32
● 2026-02-17 02:01:12
● 2026-03-24 12:50:54

○A86.51.174.1542015-07-04 → 2016-08-19 · 4 obs

● 2015-07-04 12:58:42
● 2016-08-19 09:37:32
○ 2026-02-17 02:01:12
○ 2026-03-24 12:50:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
ac-knowledge.net	john.ns.cloudflare.com, pat.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.185

NS records: john.ns.cloudflare.com, pat.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ac-knowledge.net (unsigned zone)

⏱️ Timing

Total: 446ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.2.6, 104.26.3.6...`
AAAA	3	`2606:4700:20::681a:206, 2606:4700:20::681a:306...`
NS	2	`john.ns.cloudflare.com, pat.ns.cloudflare.com`
TXT	2	`i4cp0lbkfi2m69hgcd4a6o3huh, v=spf1 include:spf.smtp2go.com ?all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`john.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

ac-knowledge.net is parent of www.ac-knowledge.net.

IP Addresses

ac-knowledge.net maps to six IP numbers: 2606:4700:20::681a:206, 2606:4700:20::681a:306, 2606:4700:20::ac43:45e8, 104.26.2.6, 104.26.3.6 and 172.67.69.232.

Other host names, for instance www.mountainaircabins.com, lwshuku.info.cenjiasu.com, www.1ev.app, presentkort.netticket.fi and www.card-plus.net share IP numbers with ac-knowledge.net.

Name Servers

ac-knowledge.net's delegation is to two name servers john.ns.cloudflare.com and pat.ns.cloudflare.com.

ac-knowledge.net shares the same name server configuration as other domains, such as naseej.com, svev.no, ca-dlib.org, coreupdates.com and dawgyg.com.

ac-knowledge.net at least partially shares its name servers with other domains, for instance 66686.com, thequickerkitchen.com, pinnacletripmaster.live, gunaydinbursa.net and michelruc.com.

These name servers are commonly used alongside princess.ns.cloudflare.com and stella.ns.cloudflare.com.

Host names with six IP numbers:

john.ns.cloudflare.com points to: 2606:4700:58::adf5:3bb9, 2803:f800:50::6ca2:c1b9, 2a06:98c1:50::ac40:21b9, 108.162.193.185, 172.64.33.185 and 173.245.59.185.

pat.ns.cloudflare.com points to: 2606:4700:50::adf5:3a8b, 2803:f800:50::6ca2:c08b, 2a06:98c1:50::ac40:208b, 108.162.192.139, 172.64.32.139 and 173.245.58.139.

ac-knowledge.net - robtex.com

ac-knowledge.net

net

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

`ac-knowledge.net`

`net`