developer.calendly.com - dns.ninja

developer.calendly.com

DNSSEC⚠️ Not signed
A2606:4700:4403::ac40:9251🇺🇸 Cloudflare2606:4700:4403::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:440d::6812:29af🇺🇸 Cloudflare2606:4700:440d::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.18.41.175Cloudflare104.18.41.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.64.146.81🇺🇸 Cloudflare172.64.146.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.18.41.175, 172.64.146.81
IPv6 hints2606:4700:4403::ac40:9251, 2606:4700:440d::6812:29af

calendly.com

DNSSEC🔒 Signed (DS record present)
A2606:4700:4403::ac40:9251🇺🇸 Cloudflare2606:4700:4403::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:440d::6812:29af🇺🇸 Cloudflare2606:4700:440d::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.18.41.175Cloudflare104.18.41.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.64.146.81🇺🇸 Cloudflare172.64.146.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NShope.ns.cloudflare.com ⭐
NSroan.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(20)
MXalt2.aspmx.l.google.com(20)
MXaspmx2.googlemail.com(30)
MXaspmx3.googlemail.com(30)
TXT06FB0F4CCD
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TXTTAILSCALE-nNYYC0vC9TISAvboCaQA
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HTTPSHTTP/2 ✓ hints match
IPv4 hints104.18.41.175, 172.64.146.81
IPv6 hints2606:4700:4403::ac40:9251, 2606:4700:440d::6812:29af
SOAhope.ns.cloudflare.comdns@cloudflare.com serial=2407941332
WOT: SAFE (61/100)
rank #139 globally
rank #89 in the tld

calendly.com

calendly.comis the official website of Calendly, a cloud-based scheduling automation platform designed to simplify the booking of appointments and meetings. The service and domain are operated by Calendly, LLC.

Key facts

  • Owner / operator: Calendly, LLC
  • TLD:.com— gTLD
  • Primary purpose: corporate website and scheduling platform
  • Status: active

History

YearEvent
2013Founded by Tope Awotona in Atlanta, Georgia.
2021Raised $350 million in funding, achieving a valuation of $3 billion.
2022Acquired Prelude to expand scheduling workflows for recruiting.
🔒 HSTS Preload (+subdomains)
Semrush Rank:#5,128 Keywords:99,870 Traffic:470,539/mo
WOT: SAFE (65/100)
📈 Tranco rank: #375
calendly.com - Tranco Rank (30d: ↑+20)372375380385390395396May 17May 27Jun 6Jun 16Jun 25Rank#394#374

Calendly - Online Scheduling Platform

Calendly is a leading online appointment scheduling software that eliminates the back-and-forth of finding meeting times. Users share their Calendly link, and invitees can book available time slots directly from their calendar. The platform serves millions of users worldwide, from individual professionals to enterprise teams.

Key Features

  • Automated scheduling - Syncs with Google, Outlook, Office 365, and iCloud calendars
  • Customizable availability - Set buffer times, meeting limits, and working hours
  • Team scheduling - Round-robin assignments, collective meetings, and pooled availability
  • Integrations - Connects with Zoom, Salesforce, HubSpot, Slack, and 100+ other tools
  • Workflow automation - Automated reminders, follow-ups, and routing

Company Background

Founded in 2013, Calendly reached a $3 billion+ valuation by 2021. The company has expanded beyond simple scheduling into a broader platform, acquiring Prelude in 2022 to enhance recruiting capabilities. Calendly competes with scheduling features from Zoom, Google, Microsoft, and newer entrants like Supercal.

Technical Infrastructure

TypeDetails
DNSCloudflare (hope.ns.cloudflare.com, roan.ns.cloudflare.com)
CDN/HostingCloudflare
IPv4104.18.41.175, 172.64.146.81
IPv62606:4700:4402::6812:29af, 2a06:98c1:3107::ac40:9251
EmailGoogle Workspace (aspmx.l.google.com)
DNSSECSigned and validated
Global Rank#148 (Tranco #420)

Same first word

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DNS History

6 records (4 active, 2 former)

A104.18.41.175172.64.146.812606:4700:4403::ac40:92512606:4700:440d::6812:29af2606:4700:4402::6812:29af2a06:98c1:3107::ac40:9251
●A104.18.41.1752026-03-01 → 2026-06-27 · 2 obs
● 2026-03-01 21:42:42
● 2026-06-27 19:35:00
●A172.64.146.812026-03-01 → 2026-06-27 · 2 obs
● 2026-03-01 21:42:42
● 2026-06-27 19:35:00
○A2606:4700:4402::6812:29af2026-03-01 → 2026-03-01 · 3 obs
● 2026-03-01 21:42:42
○ 2026-06-20 20:27:46
○ 2026-06-27 19:35:00
●A2606:4700:4403::ac40:92512026-06-20 → 2026-06-27 · 3 obs
○ 2026-03-01 21:42:42
● 2026-06-20 20:27:46
● 2026-06-27 19:35:00
●A2606:4700:440d::6812:29af2026-06-20 → 2026-06-27 · 3 obs
○ 2026-03-01 21:42:42
● 2026-06-20 20:27:46
● 2026-06-27 19:35:00
○A2a06:98c1:3107::ac40:92512026-03-01 → 2026-03-01 · 3 obs
● 2026-03-01 21:42:42
○ 2026-06-20 20:27:46
○ 2026-06-27 19:35:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, k.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net...-
calendly.comhope.ns.cloudflare.com, roan.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.226

NS records: hope.ns.cloudflare.com, roan.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 302ms | Queries: -

📄 Records

TypeCountSample Data
A2172.64.146.81, 104.18.41.175
AAAA22606:4700:440d::6812:29af, 2606:4700:4403::ac40:9251
HTTPS1{"priority":1,"target":".","alpn":["h2"]

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

developer.calendly.com resolves to four IP addresses: 104.18.41.175, 172.64.146.81, 2606:4700:4403::ac40:9251 and 2606:4700:440d::6812:29af.

Two other host names, along with navispherevision.com, jordansmithofficial.com and www-homefurniture-ca.kibocloud.com, also share IP numbers with developer.calendly.com.