flexstack.com - dns.ninja

`flexstack.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:3669^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:8a30^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.54.105^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.138.48^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`noah.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b85^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c185^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`noah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2185^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`noah.ns.cloudflare.com`
		A	108.162.193.133^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
		A	172.64.33.133^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
		A	173.245.59.133^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
NS	`sara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a90^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c090^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2090^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sara.ns.cloudflare.com`
		A	108.162.192.144^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	172.64.32.144^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	173.245.58.144^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c0b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f26.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.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::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.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	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=3DSPow9QjwnKlbN3P2HFJT__n0IyAS3ES63wUm5i-Rs`
TXT	`google-site-verification=twpUvy2TD4CmxrbhdPRokY2httgaCDWz1i4TljcPOCc`
TXT	`v=spf1 include:_spf.google.com include:sendgrid.net -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.54.105, 172.67.138.48
		IPv6 hints	2606:4700:3030::6815:3669, 2606:4700:3033::ac43:8a30
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=178, name=cloudflare-ech.com
SOA	`noah.ns.cloudflare.com`dns@cloudflare.com serial=2405648972

`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=1782865191

Subdomains

api.flexstack.com

Same first word

flexstack.nl

flexstack.eu

flexstack.com

DNS History

23 records (11 active, 12 former)

●NSnoah.ns.cloudflare.com2026-02-20 → 2026-07-01 · 3 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-07-01 00:48:44

○NSns1.domaindiscover.com2015-06-19 → 2019-12-30 · 4 obs

● 2015-06-19 07:47:32
● 2019-12-30 13:10:42
○ 2026-02-20 20:47:24
○ 2026-07-01 00:48:44

○NSns2.domaindiscover.com2015-06-19 → 2019-12-30 · 4 obs

● 2015-06-19 07:47:32
● 2019-12-30 13:10:42
○ 2026-02-20 20:47:24
○ 2026-07-01 00:48:44

●NSsara.ns.cloudflare.com2026-02-20 → 2026-07-01 · 3 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-07-01 00:48:44

●MXalt1.aspmx.l.google.com2026-02-20 → 2026-07-01 · 3 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-07-01 00:48:44

●MXalt2.aspmx.l.google.com2026-02-20 → 2026-07-01 · 3 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-07-01 00:48:44

●MXalt3.aspmx.l.google.com2026-02-20 → 2026-07-01 · 3 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-07-01 00:48:44

●MXalt4.aspmx.l.google.com2026-02-20 → 2026-07-01 · 3 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-07-01 00:48:44

●MXaspmx.l.google.com2026-02-20 → 2026-07-01 · 3 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-07-01 00:48:44

○MXmx1.daemonmail.net2015-06-19 → 2019-12-30 · 4 obs

● 2015-06-19 07:47:32
● 2019-12-30 13:10:42
○ 2026-02-20 20:47:24
○ 2026-07-01 00:48:44

○MXmx2.daemonmail.net2015-06-19 → 2019-12-30 · 4 obs

● 2015-06-19 07:47:32
● 2019-12-30 13:10:42
○ 2026-02-20 20:47:24
○ 2026-07-01 00:48:44

●A104.21.54.1052026-02-20 → 2026-07-01 · 6 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-04-04 00:42:22
○ 2026-04-04 18:10:58
● 2026-05-31 16:16:24
● 2026-07-01 00:48:44

●A172.67.138.482026-02-20 → 2026-07-01 · 6 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-04-04 00:42:22
○ 2026-04-04 18:10:58
● 2026-05-31 16:16:24
● 2026-07-01 00:48:44

○A188.114.96.02026-04-04 → 2026-04-04 · 4 obs

○ 2026-04-04 00:42:22
● 2026-04-04 18:10:58
○ 2026-05-31 16:16:24
○ 2026-07-01 00:48:44

○A188.114.97.02026-04-04 → 2026-04-04 · 4 obs

○ 2026-04-04 00:42:22
● 2026-04-04 18:10:58
○ 2026-05-31 16:16:24
○ 2026-07-01 00:48:44

○A216.104.165.172015-06-19 → 2019-12-30 · 4 obs

● 2015-06-19 07:47:32
● 2019-12-30 13:10:42
○ 2026-02-20 20:47:24
○ 2026-07-01 00:48:44

○A216.104.165.772015-06-19 → 2019-12-30 · 4 obs

● 2015-06-19 07:47:32
● 2019-12-30 13:10:42
○ 2026-02-20 20:47:24
○ 2026-07-01 00:48:44

●A2606:4700:3030::6815:36692026-07-01 → 2026-07-01 · 3 obs

○ 2026-06-13 23:22:02
● 2026-07-01 00:48:42
● 2026-07-01 00:48:44

●A2606:4700:3033::ac43:8a302026-07-01 → 2026-07-01 · 3 obs

○ 2026-06-13 23:22:02
● 2026-07-01 00:48:42
● 2026-07-01 00:48:44

○A2606:4700:3035::ac43:8a302026-02-20 → 2026-06-13 · 8 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-04-04 00:42:22
○ 2026-04-04 18:10:58
● 2026-05-31 16:16:24
● 2026-06-13 23:22:02
○ 2026-07-01 00:48:42
○ 2026-07-01 00:48:44

○A2606:4700:3036::6815:36692026-02-20 → 2026-06-13 · 8 obs

○ 2019-12-30 13:10:42
● 2026-02-20 20:47:24
● 2026-04-04 00:42:22
○ 2026-04-04 18:10:58
● 2026-05-31 16:16:24
● 2026-06-13 23:22:02
○ 2026-07-01 00:48:42
○ 2026-07-01 00:48:44

○A2a06:98c1:3120::2026-04-04 → 2026-04-04 · 4 obs

○ 2026-04-04 00:42:22
● 2026-04-04 18:10:58
○ 2026-05-31 16:16:24
○ 2026-07-01 00:48:44

○A2a06:98c1:3121::2026-04-04 → 2026-04-04 · 4 obs

○ 2026-04-04 00:42:22
● 2026-04-04 18:10:58
○ 2026-05-31 16:16:24
○ 2026-07-01 00:48:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
flexstack.com	noah.ns.cloudflare.com, sara.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.133

NS records: noah.ns.cloudflare.com, sara.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flexstack.com (unsigned zone)

⏱️ Timing

Total: 178ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.138.48, 104.21.54.105`
AAAA	2	`2606:4700:3033::ac43:8a30, 2606:4700:3030::6815:3669`
NS	2	`noah.ns.cloudflare.com, sara.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`google-site-verification=3DSPow9QjwnKlbN, google-site-verification=twpUvy2TD4Cmxrb...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`noah.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

flexstack.com is the parent zone for api.flexstack.com.

IP Addresses

flexstack.com has four IP addresses: 104.21.54.105, 172.67.138.48, 2606:4700:3030::6815:3669 and 2606:4700:3033::ac43:8a30.

Among the host names that share IP numbers with flexstack.com are centreville-md.opendi.us, latham-ny.opendi.us, ardmore-al.opendi.us and two others.

Name Servers

flexstack.com uses two name servers for its delegation: noah.ns.cloudflare.com and sara.ns.cloudflare.com.

flexstack.com has the same name server delegation as a number of other domains, such as clasiguia.com.pa, hcsnz.com, lifeboat.com and two more.

flexstack.com partially shares its NS delegation with several other domains, including eamann.com, healthlabspharm.com, 1286210.com and two others.

These name servers are regularly seen alongside jule.ns.cloudflare.com and annalise.ns.cloudflare.com as name servers.

Host names resolving to 6 IP numbers:

Hostname noah.ns.cloudflare.com directs to 108.162.193.133, 172.64.33.133 and 173.245.59.133 along with 3 other IP addresses.

Hostname sara.ns.cloudflare.com directs to 108.162.192.144, 172.64.32.144 and 173.245.58.144 along with 3 other IP addresses.

Mail Servers

Mail for flexstack.com is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

flexstack.com shares at least some of its mail servers with other domains — for example hseinstitute.com, ns500671.ns500731.ns500742.ns500704.ns500704.ns500742.ns500742.ns500705.ns500671.ns500671.ns500671.ns500649.tenderladiesbz.com, ns500699.ns500699.ns500693.ns500699.ns500734.ns500734.ns500693.ns500699.ns500699.ns500588.ns500693.ns500632.ns500632.ns500578.ns500110.dtrkdll.com and two more.

It is common to find these mail servers paired with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 more.

Hosts with two IP numbers each:

aspmx.l.google.com directs traffic to 64.233.180.27 and 2607:f8b0:4004:c0b::1a.

alt1.aspmx.l.google.com directs traffic to 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com directs traffic to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com directs traffic to 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com directs traffic to 172.253.157.27 and 2a00:1450:400c:c23::1a.