recursion.us - dns.ninja

`recursion.us`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:b661^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:53df^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.83.223^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.182.97^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`buck.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b4e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c14e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`buck.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:214e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`buck.ns.cloudflare.com`
		A	108.162.193.78^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
		A	172.64.33.78^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
		A	173.245.59.78^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
NS	`vera.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a93^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c093^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vera.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2093^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vera.ns.cloudflare.com`
		A	108.162.192.147^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	172.64.32.147^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	173.245.58.147^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c07::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f26.1e100.net`
		A	172.253.63.26^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f26.1e100.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::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	`aspmx2.googlemail.com`⁽¹⁰⁾
		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	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`amazonses:xGg0bhUx5enDgz1naugXIFviKcJGQMz62fufFGZ/nMs=`
TXT	`google-site-verification=dooeyvhLUDNJauhmMBYfUZLhnowmf5m_Q1gXvkzGM2w`
TXT	`google-site-verification=yWGpbgUzBW5raqDs878kUyV-eemjCnYdCYvQcqHXzM8`
TXT	`v=spf1 a mx include:spf.mtasv.net ~all`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`v=spf1 include:servers.mcsv.net ?all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.83.223, 172.67.182.97
		IPv6 hints	2606:4700:3032::ac43:b661, 2606:4700:3037::6815:53df
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=194, name=cloudflare-ech.com
SOA	`buck.ns.cloudflare.com`dns@cloudflare.com serial=2407112254

`us`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.cctld.us` ⭐
	NS	`b.cctld.us`
	NS	`f.cctld.us`
	NS	`k.cctld.us`
	NS	`m.cctld.us`
	NS	`n.cctld.us`
	NS	`w.cctld.us`
	NS	`x.cctld.us`
	NS	`y.cctld.us`
	SOA	`a.cctld.us`admin@tldns.godaddy serial=1782697079

Same first word

recursion.tv

recursion.tk

recursion.at

recursion.in

recursion.eu

recursion.org

recursion.cn

recursion.ca

recursion.us

recursion.com

recursion.es

recursion.ru

recursion.space

recursion.nl

recursion.dk

recursion.net

Similar names

DNS History

24 records (11 active, 13 former)

●NSbuck.ns.cloudflare.com2026-02-23 → 2026-06-29 · 3 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-06-29 02:15:24

○NSns1.sedoparking.com2018-10-07 → 2018-10-07 · 4 obs

○ 2017-01-27 09:09:42
● 2018-10-07 09:09:44
○ 2026-02-23 22:06:22
○ 2026-06-29 02:15:24

○NSns1.shopco.com2015-07-25 → 2017-01-27 · 4 obs

● 2015-07-25 07:22:42
● 2017-01-27 09:09:42
○ 2018-10-07 09:09:44
○ 2026-06-29 02:15:24

○NSns2.sedoparking.com2018-10-07 → 2018-10-07 · 4 obs

○ 2017-01-27 09:09:42
● 2018-10-07 09:09:44
○ 2026-02-23 22:06:22
○ 2026-06-29 02:15:24

●NSvera.ns.cloudflare.com2026-02-23 → 2026-06-29 · 3 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-06-29 02:15:24

●MXalt1.aspmx.l.google.com2026-02-23 → 2026-06-29 · 3 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-06-29 02:15:24

●MXalt2.aspmx.l.google.com2026-02-23 → 2026-06-29 · 3 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-06-29 02:15:24

●MXaspmx.l.google.com2026-02-23 → 2026-06-29 · 3 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-06-29 02:15:24

●MXaspmx2.googlemail.com2026-02-23 → 2026-06-29 · 3 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-06-29 02:15:24

●MXaspmx3.googlemail.com2026-02-23 → 2026-06-29 · 3 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-06-29 02:15:24

○MXlocalhost2018-10-07 → 2018-10-07 · 4 obs

○ 2017-01-27 09:09:42
● 2018-10-07 09:09:44
○ 2026-02-23 22:06:22
○ 2026-06-29 02:15:24

○MXmx.recursion.us.cust.b.hostedemail.com2015-07-25 → 2017-01-27 · 4 obs

● 2015-07-25 07:22:42
● 2017-01-27 09:09:42
○ 2018-10-07 09:09:44
○ 2026-06-29 02:15:24

●A104.21.83.2232026-02-23 → 2026-06-29 · 11 obs

○ 2018-10-07 09:09:44
● 2026-02-23 22:06:22
● 2026-03-07 06:19:36
○ 2026-03-08 13:16:42
● 2026-03-09 17:35:28
○ 2026-03-21 12:36:44
● 2026-03-29 11:49:12
● 2026-04-03 04:32:06
○ 2026-04-03 22:06:12
● 2026-04-04 21:10:22
● 2026-06-29 02:15:24

●A172.67.182.972026-02-23 → 2026-06-29 · 11 obs

○A188.114.96.02026-03-08 → 2026-04-03 · 9 obs

○ 2026-03-07 06:19:36
● 2026-03-08 13:16:42
○ 2026-03-09 17:35:28
● 2026-03-21 12:36:44
○ 2026-03-29 11:49:12
○ 2026-04-03 04:32:06
● 2026-04-03 22:06:12
○ 2026-04-04 21:10:22
○ 2026-06-29 02:15:24

○A188.114.97.02026-03-08 → 2026-04-03 · 9 obs

●A2606:4700:3032::ac43:b6612026-06-23 → 2026-06-29 · 3 obs

○ 2026-06-03 02:06:12
● 2026-06-23 18:57:30
● 2026-06-29 02:15:24

○A2606:4700:3033::ac43:b6612026-02-23 → 2026-06-03 · 13 obs

○A2606:4700:3035::6815:53df2026-02-23 → 2026-06-03 · 13 obs

●A2606:4700:3037::6815:53df2026-06-23 → 2026-06-29 · 3 obs

○ 2026-06-03 02:06:12
● 2026-06-23 18:57:30
● 2026-06-29 02:15:24

○A2a06:98c1:3120::2026-03-08 → 2026-04-03 · 9 obs

○A2a06:98c1:3121::2026-03-08 → 2026-04-03 · 9 obs

○A64.99.64.322015-07-25 → 2017-01-27 · 4 obs

● 2015-07-25 07:22:42
● 2017-01-27 09:09:42
○ 2018-10-07 09:09:44
○ 2026-06-29 02:15:24

○A72.52.4.1192018-10-07 → 2018-10-07 · 4 obs

○ 2017-01-27 09:09:42
● 2018-10-07 09:09:44
○ 2026-02-23 22:06:22
○ 2026-06-29 02:15:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	x.cctld.us, b.cctld.us, n.cctld.us, m.cctld.us...	-
recursion.us	buck.ns.cloudflare.com, vera.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.147

NS records: buck.ns.cloudflare.com, vera.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for recursion.us (unsigned zone)

⏱️ Timing

Total: 1172ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.83.223, 172.67.182.97`
AAAA	2	`2606:4700:3032::ac43:b661, 2606:4700:3037::6815:53df`
NS	2	`buck.ns.cloudflare.com, vera.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...`
TXT	6	`amazonses:xGg0bhUx5enDgz1naugXIFviKcJGQM, google-site-verification=dooeyvhLUDNJauh...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`buck.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

recursion.us has four IP addresses: 104.21.83.223, 172.67.182.97, 2606:4700:3032::ac43:b661 and 2606:4700:3037::6815:53df.

hayfjz.com, undergroundi.com, casinoparty.nl plus two other host names have IP numbers in common with recursion.us.

Name Servers

recursion.us is served by two delegated name servers, buck.ns.cloudflare.com and vera.ns.cloudflare.com.

The name server configuration of recursion.us is shared with other domains, for instance delegao.moe, ipv6.sx, skipper1314.workers.dev and two others.

recursion.us shares at least some of its name servers with other domains, including curiouslab.io, med247.net, opjhl.online and two others.

Hosts with 6 IP addresses each:

buck.ns.cloudflare.com carries IP addresses 108.162.193.78, 172.64.33.78 and 173.245.59.78, with 3 other addresses beyond those.

vera.ns.cloudflare.com carries IP addresses 108.162.192.147, 172.64.32.147 and 173.245.58.147, with 3 other addresses beyond those.

Mail Servers

Mail for recursion.us is handled by five mail servers, namely aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

At least some of the mail servers used by recursion.us are shared with other domains: tedikoleva.com, backtoathens.gr, tesar-pokryvac.cz and two others among them.

These mail servers are often deployed together with alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx2.googlemail.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1a.

aspmx.l.google.com maps to two IP addresses — 172.253.63.26 and 2607:f8b0:4004:c07::1a.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1a.

These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 2800:3f0:4003:c0f::1b IP addresses.

These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 108.177.123.27 IP addresses.

These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 2a00:1450:400b:c02::1a IP addresses.