linear.app - dns.ninja

`linear.app`

DNSSEC	⚠️ Not signed
A	2606:4700:440a::ac40:93d3^{🇺🇸 Cloudflare2606:4700:440a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2a06:98c1:3105::6812:282d^{🇺🇸 Cloudflare2a06:98c1:3105::/48} ✓ In HTTPS hints
A	104.18.40.45^{Cloudflare104.18.40.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.64.147.211^{🇺🇸 Cloudflare172.64.147.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`tim.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b91^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tim.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c191^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tim.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2191^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tim.ns.cloudflare.com`
		A	108.162.193.145^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tim.ns.cloudflare.com`
		A	172.64.33.145^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tim.ns.cloudflare.com`
		A	173.245.59.145^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tim.ns.cloudflare.com`
NS	`zara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a94^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c094^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`zara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2094^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`zara.ns.cloudflare.com`
		A	108.162.192.148^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zara.ns.cloudflare.com`
		A	172.64.32.148^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zara.ns.cloudflare.com`
		A	173.245.58.148^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zara.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c29::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f27.1e100.net`
		A	173.194.45.27^{🇺🇸 Google173.194.0.0/16}
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
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}
TXT	`MS=ms43041516`
TXT	`ZOOM_verify_r(0x534578)Bwd4QT2vT9dfq9-UrA`
TXT	`_qcd9zztuukbep051izx2pjssdl6yae2`
TXT	`anthropic-domain-verification-7emk8z=c8SuvlXPqgxzVcvjsiQ00cLfO`
TXT	`apple-domain-verification=zVdJnsxkD6nX5XCL`
TXT	`cursor-domain-verification-jkgerh=fYGswH2He0dJj0DekVjoNvFKi`
TXT	`docusign=9bc6c7a7-fde1-48af-bcc3-11f14e980549`
TXT	`domain-verification=0b7a143e64a100eeb18d7e29c53d3bcf83746f87607ac1f1b6aef8802...`
TXT	`google-site-verification=-TwiLtawzz8QlL_LZlkuGibc6klzAuD0DfgytD0TM0g`
TXT	`google-site-verification=4am7F1KUGPoMFePO3xuz4Eek80WH7im3c9UeedE10pA`
TXT	`google-site-verification=mFdMlamOogHV4U7WGNYRd55OvljoEx7M_wgpb7zHzfo`
TXT	`launchdarkly-domain-verification=f702791b-ddb9-496f-80f1-df7499632973`
TXT	`linear-domain-verification=391958`
TXT	`mongodb-site-verification=DkQRVTZWWUX0i14d4YZd(0x6469634b)0SF4Qc1L`
TXT	`notion-domain-verification=WyZnKX70mlPP1r1HchqL7re1MjaYo5c2F2Cy2R2z3XD`
TXT	`notion-domain-verification=YflTDyf5nncjFK4D85Nsh38ufawi0ExsoOTUzXu9NpT`
TXT	`openai-domain-verification=dv-cF94uxiJMGTKa374p6jJD0zU`
TXT	`rippling-domain-verification=806196fd264819a7`
TXT	`slack-domain-verification=n9BI0EJf0vSJO9ugqYmWNJ5xbOOVQnnTirCGbRZK`
TXT	`stripe-verification=6EC2FC42DC487CF290EEEE12F5DEE9914E0186EF7BF33C1B6AEB7DD8B...`
TXT	`v=MCPv1; k=ed25519; p=kK/pbugEO5TjSy0dXhqbUMJ0v+5eCO8osDkDeccICp4=`
TXT	`v=spf1 include:_spf.google.com include:spf.mtasv.net include:44092442.spf10.h...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.18.40.45, 172.64.147.211
		IPv6 hints	2606:4700:440a::ac40:93d3, 2a06:98c1:3105::6812:282d
SOA	`tim.ns.cloudflare.com`dns@cloudflare.com serial=2408253643

`app`

	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=101427

rank #24366 globally
rank #28 in the tld

linear.app

linear.appis the official website and web application of Linear, a project-management and issue-tracking tool built for software development teams. The company is operated by Linear Inc., founded in San Francisco.

Key facts

Owner / operator: Linear Inc.
TLD:.app— gTLD (Google registry; HSTS-preloaded, HTTPS enforced)
Primary purpose: Corporate website and hosted SaaS application for software project management and issue tracking
Status: active

History

Year	Event
2019	Linear Inc. founded by Karri Saarinen, Jori Lallo, and Tuomas Artman
2020	Product exits private beta and launches publicly
2021	Series A funding round (~$35 M, led by Sequoia Capital)

Related domains

app.linear.app— the authenticated web app interface (subdomain of the same domain)
api.linear.app— public GraphQL API endpoint used by integrations and the official SDK

📈 Tranco rank: #10,835
🔒 HSTS Preload (+subdomains)

Subdomains

public.linear.app

zendesk-integration.linear.app

constellation.linear.app

releases.linear.app

webassets.linear.app

s.linear.app

sync.linear.app

mcp.linear.app

e.linear.app

www.linear.app

static.linear.app

client-api.linear.app

origin-static.linear.app

api.linear.app

uploads.linear.app

Same first word

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linear.life

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DNS History

12 records (10 active, 2 former)

●NStim.ns.cloudflare.com2026-02-17 → 2026-06-30 · 2 obs

● 2026-02-17 10:37:14
● 2026-06-30 20:04:24

●NSzara.ns.cloudflare.com2026-02-17 → 2026-06-30 · 2 obs

● 2026-02-17 10:37:14
● 2026-06-30 20:04:24

●MXalt1.aspmx.l.google.com2026-02-17 → 2026-06-30 · 5 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-30 20:04:24

●MXalt2.aspmx.l.google.com2026-02-17 → 2026-06-30 · 5 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-30 20:04:24

●MXalt3.aspmx.l.google.com2026-02-17 → 2026-06-30 · 5 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-30 20:04:24

●MXaspmx.l.google.com2026-02-17 → 2026-06-30 · 5 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-30 20:04:24

●A104.18.40.452026-02-17 → 2026-06-30 · 5 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-30 20:04:24

●A172.64.147.2112026-02-17 → 2026-06-30 · 5 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-30 20:04:24

○A2606:4700:4400::ac40:93d32026-02-17 → 2026-06-16 · 7 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-16 16:24:44
○ 2026-06-27 04:05:28
○ 2026-06-30 20:04:24

●A2606:4700:440a::ac40:93d32026-06-27 → 2026-06-30 · 3 obs

○ 2026-06-16 16:24:44
● 2026-06-27 04:05:28
● 2026-06-30 20:04:24

○A2a06:98c1:3100::6812:282d2026-02-17 → 2026-06-16 · 7 obs

● 2026-02-17 10:37:14
● 2026-06-05 22:09:08
○ 2026-06-07 20:03:02
● 2026-06-08 03:42:18
● 2026-06-16 16:24:44
○ 2026-06-27 04:05:28
○ 2026-06-30 20:04:24

●A2a06:98c1:3105::6812:282d2026-06-27 → 2026-06-30 · 3 obs

○ 2026-06-16 16:24:44
● 2026-06-27 04:05:28
● 2026-06-30 20:04:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld5.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	-
linear.app	zara.ns.cloudflare.com, tim.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.148

NS records: zara.ns.cloudflare.com, tim.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linear.app (unsigned zone)

⏱️ Timing

Total: 1031ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.147.211, 104.18.40.45`
AAAA	2	`2a06:98c1:3105::6812:282d, 2606:4700:440a::ac40:93d3`
NS	2	`tim.ns.cloudflare.com, zara.ns.cloudflare.com`
MX	4	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	22	`MS=ms43041516, ZOOM_verify_r(0x534578)Bwd4QT2vT9dfq9-UrA...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`tim.ns.cloudflare.com dns.cloudflare.com`

Analysis

Hierarchy

Among the subdomains of linear.app are public.linear.app, zendesk-integration.linear.app, constellation.linear.app, releases.linear.app, webassets.linear.app and a few other host names.

IP Addresses

linear.app points to the four IP addresses 104.18.40.45, 172.64.147.211, 2606:4700:440a::ac40:93d3 and 2a06:98c1:3105::6812:282d.

bryant.com, familiaere-amyloidose.de.cdn.cloudflare.net, static.4-u-h-f.com and two other host names share IP numbers with linear.app.

Name Servers

Two name servers handle the delegation for linear.app: tim.ns.cloudflare.com and zara.ns.cloudflare.com.

linear.app uses the same name servers as several other domains — among them stickcal.com, linearstatus.com, notarysoftware.com and two more.

There is at least partial name server overlap between linear.app and other domains — ad84d6.com, claningame.com, hendriksmachines.be and two more among them.

These name servers are routinely deployed together with the name servers adrian.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

tim.ns.cloudflare.com resolves to 108.162.193.145, 172.64.33.145 and 173.245.59.145 among others, with 3 other IP addresses in total.

zara.ns.cloudflare.com resolves to 108.162.192.148, 172.64.32.148 and 173.245.58.148 among others, with 3 other IP addresses in total.

Mail Servers

The four mail servers for linear.app are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com.

linear.app has at least partial mail server overlap with other domains such as mosaique.co.uk, pocketknifesoftware.com, opi.re.it and two more.

These mail servers are routinely found in combination with the mail servers alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

All four hostnames — aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com — resolve to two IP numbers apiece: aspmx.l.google.com to 173.194.45.27 and 2607:f8b0:4004:c29::1b; alt1.aspmx.l.google.com to 108.177.123.26 and 2800:3f0:4003:c0f::1a; alt2.aspmx.l.google.com to 172.253.116.26 and 2a00:1450:400b:c02::1b; alt3.aspmx.l.google.com to 192.178.223.27 and 2a00:1450:4009:c0f::1b.