api.linear.app - dns.ninja

`api.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
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

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: #10,847

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DNS History

10 records (4 active, 6 former)

●A104.18.40.452026-03-07 → 2026-07-01 · 3 obs

○ 2020-01-31 11:22:50
● 2026-03-07 14:20:30
● 2026-07-01 11:32:12

○A104.26.10.1892020-01-31 → 2020-01-31 · 3 obs

● 2020-01-31 11:22:50
○ 2026-03-07 14:20:30
○ 2026-07-01 11:32:12

○A104.26.11.1892020-01-31 → 2020-01-31 · 3 obs

● 2020-01-31 11:22:50
○ 2026-03-07 14:20:30
○ 2026-07-01 11:32:12

●A172.64.147.2112026-03-07 → 2026-07-01 · 3 obs

○ 2020-01-31 11:22:50
● 2026-03-07 14:20:30
● 2026-07-01 11:32:12

○A2606:4700:20::681a:abd2020-01-31 → 2020-01-31 · 3 obs

● 2020-01-31 11:22:50
○ 2026-03-07 14:20:30
○ 2026-07-01 11:32:12

○A2606:4700:20::681a:bbd2020-01-31 → 2020-01-31 · 3 obs

● 2020-01-31 11:22:50
○ 2026-03-07 14:20:30
○ 2026-07-01 11:32:12

○A2606:4700:4400::ac40:93d32026-03-07 → 2026-06-15 · 5 obs

○ 2020-01-31 11:22:50
● 2026-03-07 14:20:30
● 2026-06-15 17:31:52
○ 2026-06-19 11:30:56
○ 2026-07-01 11:32:12

●A2606:4700:440a::ac40:93d32026-06-19 → 2026-07-01 · 3 obs

○ 2026-06-15 17:31:52
● 2026-06-19 11:30:56
● 2026-07-01 11:32:12

○A2a06:98c1:3100::6812:282d2026-03-07 → 2026-06-15 · 5 obs

○ 2020-01-31 11:22:50
● 2026-03-07 14:20:30
● 2026-06-15 17:31:52
○ 2026-06-19 11:30:56
○ 2026-07-01 11:32:12

●A2a06:98c1:3105::6812:282d2026-06-19 → 2026-07-01 · 3 obs

○ 2026-06-15 17:31:52
● 2026-06-19 11:30:56
● 2026-07-01 11:32:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	10 records
linear.app	zara.ns.cloudflare.com, tim.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.145

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: 476ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.18.40.45, 172.64.147.211`
AAAA	2	`2a06:98c1:3105::6812:282d, 2606:4700:440a::ac40:93d3`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld2.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...)

Analysis

IP Addresses

api.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.

e.bryant.com, diabetes.ascensia.ie.cdn.cloudflare.net, staging.myevolutionconnex.bryant.com and two other host names share IP numbers with api.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` ⭐
NS	`zara.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
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=2408354220