concentricvariableflow.com - dns.ninja

`concentricvariableflow.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:c2e5^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:14f5^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.20.245^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.194.229^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`miguel.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c5f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miguel.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c35f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`miguel.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:235f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`miguel.ns.cloudflare.com`
		A	108.162.195.95^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miguel.ns.cloudflare.com`
		A	162.159.44.95^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miguel.ns.cloudflare.com`
		A	172.64.35.95^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miguel.ns.cloudflare.com`
NS	`monroe.ns.cloudflare.com`
		A	2606:4700:50::a29f:2699^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c299^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`monroe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2299^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`monroe.ns.cloudflare.com`
		A	108.162.194.153^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
		A	162.159.38.153^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
		A	172.64.34.153^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
MX	`expint.concentric-pumps.co.uk` ⭐
MX	`mail.concentric.co.uk`⁽¹⁰⁾
		A	138.68.116.54^{🇬🇧 DIGITALOCEAN138.68.116.0/22 DigitalOcean}
MX	`relay2.bt.net`⁽¹⁵⁾
MX	`relay3.bt.net`⁽²⁰⁾
TXT	`v=spf1 ip4:81.27.96.0/20 -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.20.245, 172.67.194.229
		IPv6 hints	2606:4700:3031::ac43:c2e5, 2606:4700:3033::6815:14f5
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=119, name=cloudflare-ech.com
SOA	`miguel.ns.cloudflare.com`dns@cloudflare.com serial=2410195527

`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=1786527459

Same first word

concentricvariableflow.com

DNS History

22 records (10 active, 12 former)

●NSmiguel.ns.cloudflare.com2026-02-19 → 2026-08-12 · 3 obs

○ 2017-05-15 02:46:36
● 2026-02-19 17:03:10
● 2026-08-12 09:43:22

●NSmonroe.ns.cloudflare.com2026-02-19 → 2026-08-12 · 3 obs

○ 2017-05-15 02:46:36
● 2026-02-19 17:03:10
● 2026-08-12 09:43:22

○NSns.inetc.net2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 18:55:42
○ 2015-07-10 15:16:40
○ 2026-08-12 09:43:22

○NSns1.nameservers.co.uk2015-07-10 → 2017-05-15 · 5 obs

○ 2008-03-15 18:55:42
● 2015-07-10 15:16:40
● 2017-05-15 02:46:36
○ 2026-02-19 17:03:10
○ 2026-08-12 09:43:22

○NSns2.inetc.net2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 18:55:42
○ 2015-07-10 15:16:40
○ 2026-08-12 09:43:22

○NSns2.nameservers.co.uk2015-07-10 → 2017-05-15 · 5 obs

○ 2008-03-15 18:55:42
● 2015-07-10 15:16:40
● 2017-05-15 02:46:36
○ 2026-02-19 17:03:10
○ 2026-08-12 09:43:22

●MXexpint.concentric-pumps.co.uk2008-03-15 → 2026-08-12 · 2 obs

● 2008-03-15 18:55:42
● 2026-08-12 09:43:22

●MXmail.concentric.co.uk2008-03-15 → 2026-08-12 · 2 obs

● 2008-03-15 18:55:42
● 2026-08-12 09:43:22

●MXrelay2.bt.net2008-03-15 → 2026-08-12 · 2 obs

● 2008-03-15 18:55:42
● 2026-08-12 09:43:22

●MXrelay3.bt.net2008-03-15 → 2026-08-12 · 2 obs

● 2008-03-15 18:55:42
● 2026-08-12 09:43:22

●A104.21.20.2452026-02-19 → 2026-08-12 · 8 obs

○ 2017-05-15 02:46:36
● 2026-02-19 17:03:10
● 2026-03-22 15:27:26
○ 2026-05-13 16:06:30
● 2026-05-23 13:20:06
● 2026-06-16 01:18:24
○ 2026-06-21 17:56:46
● 2026-08-12 09:43:22

●A172.67.194.2292026-02-19 → 2026-08-12 · 8 obs

○ 2017-05-15 02:46:36
● 2026-02-19 17:03:10
● 2026-03-22 15:27:26
○ 2026-05-13 16:06:30
● 2026-05-23 13:20:06
● 2026-06-16 01:18:24
○ 2026-06-21 17:56:46
● 2026-08-12 09:43:22

○A188.114.96.02026-05-13 → 2026-06-21 · 6 obs

○ 2026-03-22 15:27:26
● 2026-05-13 16:06:30
○ 2026-05-23 13:20:06
○ 2026-06-16 01:18:24
● 2026-06-21 17:56:46
○ 2026-08-12 09:43:22

○A188.114.97.02026-05-13 → 2026-06-21 · 6 obs

○ 2026-03-22 15:27:26
● 2026-05-13 16:06:30
○ 2026-05-23 13:20:06
○ 2026-06-16 01:18:24
● 2026-06-21 17:56:46
○ 2026-08-12 09:43:22

○A2606:4700:3030::ac43:c2e52026-02-19 → 2026-06-16 · 8 obs

○ 2017-05-15 02:46:36
● 2026-02-19 17:03:10
● 2026-03-22 15:27:26
○ 2026-05-13 16:06:30
● 2026-05-23 13:20:06
● 2026-06-16 01:18:24
○ 2026-06-21 17:56:46
○ 2026-08-12 09:43:22

●A2606:4700:3031::ac43:c2e52026-08-12 → 2026-08-12 · 2 obs

○ 2026-06-21 17:56:46
● 2026-08-12 09:43:22

●A2606:4700:3033::6815:14f52026-08-12 → 2026-08-12 · 2 obs

○ 2026-06-21 17:56:46
● 2026-08-12 09:43:22

○A2606:4700:3034::6815:14f52026-02-19 → 2026-06-16 · 8 obs

○ 2017-05-15 02:46:36
● 2026-02-19 17:03:10
● 2026-03-22 15:27:26
○ 2026-05-13 16:06:30
● 2026-05-23 13:20:06
● 2026-06-16 01:18:24
○ 2026-06-21 17:56:46
○ 2026-08-12 09:43:22

○A2a06:98c1:3120::2026-05-13 → 2026-06-21 · 6 obs

○ 2026-03-22 15:27:26
● 2026-05-13 16:06:30
○ 2026-05-23 13:20:06
○ 2026-06-16 01:18:24
● 2026-06-21 17:56:46
○ 2026-08-12 09:43:22

○A2a06:98c1:3121::2026-05-13 → 2026-06-21 · 6 obs

○ 2026-03-22 15:27:26
● 2026-05-13 16:06:30
○ 2026-05-23 13:20:06
○ 2026-06-16 01:18:24
● 2026-06-21 17:56:46
○ 2026-08-12 09:43:22

○A81.27.106.1292015-07-10 → 2017-05-15 · 5 obs

○ 2008-03-15 18:55:42
● 2015-07-10 15:16:40
● 2017-05-15 02:46:36
○ 2026-02-19 17:03:10
○ 2026-08-12 09:43:22

○A81.27.111.1012008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 18:55:42
○ 2015-07-10 15:16:40
○ 2026-08-12 09:43:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net...	-
concentricvariableflow.com	monroe.ns.cloudflare.com, miguel.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:162.159.38.153

NS records: monroe.ns.cloudflare.com, miguel.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for concentricvariableflow.com (unsigned zone)

⏱️ Timing

Total: 152ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.194.229, 104.21.20.245`
AAAA	2	`2606:4700:3031::ac43:c2e5, 2606:4700:3033::6815:14f5`
NS	2	`miguel.ns.cloudflare.com, monroe.ns.cloudflare.com`
MX	4	`expint.concentric-pumps.co.uk (pri: 0), mail.concentric.co.uk (pri: 10)...`
TXT	1	`v=spf1 ip4:81.27.96.0/20 -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`miguel.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

concentricvariableflow.com has four IP addresses: 104.21.20.245, 172.67.194.229, 2606:4700:3031::ac43:c2e5 and 2606:4700:3033::6815:14f5.

89win.top, brccsb3.designedinthecloud.com, zenicablog.com and two other host names share IP numbers with concentricvariableflow.com.

Name Servers

Two name servers handle the delegation for concentricvariableflow.com: miguel.ns.cloudflare.com and monroe.ns.cloudflare.com.

concentricvariableflow.com uses the same name servers as several other domains — among them costaswfl.com, medialcs.com, concentricab.com and two more.

concentricvariableflow.com partially shares its NS delegation with several other domains, including hardrockhotelperth.com, kinoni.ru, crystal-av.com and two others.

These name servers regularly co-occur with the name servers chad.ns.cloudflare.com, dayana.ns.cloudflare.com and guss.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

miguel.ns.cloudflare.com resolves to 108.162.195.95, 162.159.44.95 and 172.64.35.95 among others, with 3 other IP addresses in total.

monroe.ns.cloudflare.com resolves to 108.162.194.153, 162.159.38.153 and 172.64.34.153 among others, with 3 other IP addresses in total.

Mail Servers

Four mail servers handle email for concentricvariableflow.com: relay2.bt.net, relay3.bt.net, expint.concentric-pumps.co.uk and mail.concentric.co.uk.

concentricvariableflow.com has at least partial mail server overlap with other domains such as infantgrapevine.co.uk, eastmidlands.trainsfares.co.uk, fcc.trainsfares.co.uk and two more.

These mail servers commonly co-occur with mail servers relay1.bt.net, mailhost.firstimage.net, mailgw.siemens.co.uk and 4 others.

Hosts with just one IP address:

The hostname mail.concentric.co.uk resolves to 138.68.116.54.