perpendicularity.dev - dns.ninja

`perpendicularity.dev`

DNSSEC	⚠️ Not signed
A	64.44.90.170^{🇺🇸 NEXEON-164.44.88.0/21 Nexeon route.}
		PTR	`d`
NS	`cris.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cca^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ca^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cris.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ca^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cris.ns.cloudflare.com`
		A	108.162.195.202^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
		A	162.159.44.202^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
		A	172.64.35.202^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
NS	`sima.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ade^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0de^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sima.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20de^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sima.ns.cloudflare.com`
		A	108.162.192.222^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	172.64.32.222^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	173.245.58.222^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c29::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f26.1e100.net`
		A	142.250.31.26^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 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	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.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	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`apple-domain=7svYxrAGE1hqXmdb`
TXT	`google-site-verification=emWgkfGu81-15TWZcm55wynlfEzxrUD9jbI6zkbERnE`
TXT	`v=spf1 include:icloud.com include:_spf.google.com ~all`
SOA	`cris.ns.cloudflare.com`dns@cloudflare.com serial=2409868931

`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)

Subdomains

audiobookshelf.perpendicularity.dev

calibre-web.perpendicularity.dev

Same first word

perpendicularity.net

perpendicularity.dev

DNS History

8 records (8 active, 0 former)

●NScris.ns.cloudflare.com2026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

●NSsima.ns.cloudflare.com2026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

●MXalt3.aspmx.l.google.com2026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

●MXalt4.aspmx.l.google.com2026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

●MXaspmx.l.google.com2026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

●A64.44.90.1702026-02-15 → 2026-07-23 · 2 obs

● 2026-02-15 19:33:36
● 2026-07-23 21:16:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
perpendicularity.dev	cris.ns.cloudflare.com, sima.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.222

NS records: cris.ns.cloudflare.com, sima.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for perpendicularity.dev (unsigned zone)

⏱️ Timing

Total: 1363ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`64.44.90.170`
NS	2	`cris.ns.cloudflare.com, sima.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`apple-domain=7svYxrAGE1hqXmdb, google-site-verification=emWgkfGu81-15TW...`
SOA	1	`cris.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

perpendicularity.dev is the parent domain of audiobookshelf.perpendicularity.dev and calibre-web.perpendicularity.dev.

IP Addresses

perpendicularity.dev points to a single IP number: 64.44.90.170.

us-sa.secureconnect.me is an example of another host name that shares IP numbers with perpendicularity.dev.

Name Servers

perpendicularity.dev has two authoritative name servers — cris.ns.cloudflare.com and sima.ns.cloudflare.com.

perpendicularity.dev shares its name server setup with other domains, including teo.me, adrcooper.com, skedastic.com and two others.

perpendicularity.dev shares at least some of its name servers with other domains, including kssaps.com, editor.run, centralduties.com and two others.

These name servers are frequently paired with the name servers jamie.ns.cloudflare.com, sloan.ns.cloudflare.com and owen.ns.cloudflare.com.

Host names with 6 IP numbers:

cris.ns.cloudflare.com points to 108.162.195.202, 162.159.44.202, 172.64.35.202 and 3 other IP addresses.

sima.ns.cloudflare.com points to 108.162.192.222, 172.64.32.222, 173.245.58.222 and 3 other IP addresses.

Mail Servers

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

perpendicularity.dev shares mail servers — at least in part — with other domains, including deliveroo.ie, basatt.com, whichrealestateagent.com and two others.

These mail servers are frequently paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx3.googlemail.com and aspmx2.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com resolves to 142.250.31.26 and 2607:f8b0:4004:c29::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a.

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

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1a.