Hosting check
Who hosts heroku.com?
heroku.com is hosted on WordPress.com. DNS by NS1. Email by Google Workspace.
Checked 14 Oct 2026 at 12:40 UTC
Server
Anycast: nearest of many locations
192.0.66.110
Automattic, Inc · AS2635
🇺🇸San Francisco, United States
Checks
5 of 6 checks pass
Warnings are worth a look, but nothing is broken.
Hosting provider
High confidence
WordPress.com
PlatformA known platform or a plain hosting network answered, so the host is certain.
- Platform
Runs the site. The platform rents its servers from the network below.
- Network
Owns the IP address that answered our lookup.
How we know
1 signal- NetworkAS2635WordPress.com
IP & network
192.0.66.110 · San Francisco
- IP address
- 192.0.66.110
- Network
- Automattic, IncAS2635 · hosting
- Route
- 192.0.66.0/24
- Location
- San Francisco, California, United StatesAnycast: where our lookup landed
- Timezone
- America/Los_Angeles
This is an anycast address: many locations announce it, and each visitor reaches the nearest one. The location above is only where our lookup landed.
Coordinates, postal code and company
Geolocation describes the network's registered location, not a street address. For a data center IP the postal code and coordinates are approximate.
- Coordinates
- 37.7749,-122.4194
- Postal code
- 94102
- Country code
- US
DNS records
17 records in 6 types
- A
1 record
IPv4 addresses the name points to
- 192.0.66.110
- AAAA
1 record
IPv6 addresses the name points to
- 2a04:fa87:fffd::c000:426e
- NS
8 records
Nameservers that answer for the zone
- dns1.p01.nsone.net
- dns2.p01.nsone.net
- dns3.p01.nsone.net
- dns4.p01.nsone.net
- ns01.herokudns.net
- ns02.herokudns.net
- ns03.herokudns.net
- ns04.herokudns.net
- MX
1 record
Mail servers, lowest priority first
- 1 smtp.google.com
- SOA
1 record
Zone authority: primary nameserver, admin mailbox and timers
- dns1.p04.nsone.net hostmaster.nsone.net 1661184191 3600 600 604800 450
- TXT
5 records
1 SPF policy, 3 ownership proofs, 1 other
- 36fded18-0a5e-4a1f-b182-d2e4cfb54606
- google-site-verification=0lwG2NjL9452N97Edm9qR-fw8FyHVWarr4WKwWKIoSA
- google-site-verification=8HRJpo1MsC3G8GZpZiEWM5yXbzFB8NKa38O6ZjuTc-w
- google-site-verification=uk9Ibe3zvPE8drXYiXzryAr19xY3fdyBeEkBp5fkiZY
- v=spf1 ip4:167.89.4.18 include:_spf.google.com include:mailgun.org include:aspmx.pardot.com exists:%{i}._spf.corp.salesforce.com ~all
SSL certificate
- Status
- Valid certificateTrusted by browsers and covers heroku.com. Expires in 52 days.
- Issuer
- Let's Encrypt (YE1)
- Common name
- heroku.com
- Protocol
- TLSv1.3
- Valid from
- September 7, 2026 at 06:03 AM UTC
- Valid to
- December 6, 2026 at 06:03 AM UTCExpires in 52 days
Covered hostnames
2 names- heroku.com
- www.heroku.com
Certificate chain
5 certificatesheroku.com
Server certificate · Issued by Let's Encrypt (YE1) · Valid to 06 Dec 2026
Let's Encrypt (YE1)
Intermediate · Issued by ISRG (Root YE) · Valid to 02 Sept 2028
ISRG (Root YE)
Intermediate · Issued by Internet Security Research Group (ISRG Root X2) · Valid to 02 Sept 2032
Internet Security Research Group (ISRG Root X2)
Intermediate · Issued by Internet Security Research Group (ISRG Root X1) · Valid to 02 Sept 2032
Internet Security Research Group (ISRG Root X1)
Root · Valid to 04 Jun 2035
Serial number and fingerprints
- Serial number
- 052939EA6145C2AA74C4BCFEFA480A28175F
- SHA-256
- 6F:85:37:BF:3D:A4:62:5E:F6:53:5F:87:3F:92:2D:16:D5:3F:8A:45:5A:2F:54:AB:BF:B5:9F:9F:17:C9:0C:4B
- SHA-1
- F6:0A:76:B7:41:78:4A:E3:0A:AF:1C:8C:67:77:71:51:87:4F:C3:E8
Domain registration
Registered 15 Jun 2007
Expires in 243 daysRegistration data for heroku.com, from the registry's RDAP or WHOIS service.
- Registrar
- MarkMonitor Inc.IANA ID 292
- Registrant
- Salesforce, Inc.US
- Registered
- 15 Jun 200719 years, 3 months old
- Expires
- 15 Jun 2027Expires in 243 days
- Last updated
- 30 Mar 2026
- DNSSEC
- Unsigned
- Abuse email
- abusecomplaints@markmonitor.com
- Abuse phone
- +1.2086851750
Status
Nameservers
8 nameservers- dns1.p01.nsone.net
- dns2.p01.nsone.net
- dns3.p01.nsone.net
- dns4.p01.nsone.net
- ns01.herokudns.net
- ns02.herokudns.net
- ns03.herokudns.net
- ns04.herokudns.net
Build your site on WordPress.com
This site is built on WordPress.com. You can build your own site there too.
WordPress.com
Managed WordPress hosting from Automattic, with plans from free to business.
Affiliate link: we may earn a commission at no cost to you.
Run this lookup from code
The API returns this result as JSON. The free plan includes 100 API calls per month.
curl "https://hostingchecker.online/api/v1/check?query=heroku.com" \
-H "Authorization: Bearer YOUR_API_KEY"Similar sites
Other popular sites on WordPress.com
Popular sites that WordPress.com serves too, from the domains we check every day.
Related guides
Learn more from the blog
Step-by-step guides on reading and using these results.
Where Is This Website Hosted? How to Find Out (5 Methods)
How to find where a website is hosted: a hosting checker, DNS, IP and ASN lookups, WHOIS/RDAP and response headers. Includes three worked examples with real output for a Cloudflare, a Vercel and a Hostinger site.
Website Server Location: How to Find Where a Server Is Located
Find a website's server location: the country, city and data center where its server is located. Use an IP lookup, dig and ipinfo, response headers, traceroute or WHOIS, and learn why anycast and CDNs change the answer.
How to Monitor Website Hosting Changes With dig, cron and an API
Monitor website hosting changes with a short shell script: record a domain's DNS records, IP network and detected providers on a cron schedule, and get a diff when anything changes. Uses dig, curl and the Hosting Checker API.
Free lookup tool
Find out who hosts any website
Enter a domain or IP to uncover hosting details, DNS records, and server location.