Hosting check
Who hosts backblaze.com?
backblaze.com is behind Cloudflare, which hides the origin host. DNS by Cloudflare. Email by Proofpoint.
Checked 14 Oct 2026 at 11:40 UTC
Server
Anycast: nearest of many locations
104.17.5.3
Cloudflare, Inc. · AS13335
🇺🇸San Francisco, United States
Checks
7 of 7 checks pass
Nothing needs attention.
Hosting provider
Low confidence
Cloudflare
CDNOrigin host hidden. A CDN answers for this site and hides the origin server, so the real host is not visible from outside.
- CDN
Cloudflarecloudflare.com
Answers every request and forwards it to an origin server it does not reveal. The IP address below belongs to the CDN.
- Network
Owns the IP address that answered our lookup.
How we know
3 signals- NetworkAS13335Cloudflare
- Headercf-ray: a4a64edf0c1d723d-HELCloudflare
- Headerserver: cloudflareCloudflare
IP & network
104.17.5.3 · San Francisco
- IP address
- 104.17.5.3
- Network
- Cloudflare, Inc.AS13335 · hosting
- Route
- 104.17.0.0/20
- 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
- 37.7621,-122.3971
- Postal code
- 94107
- Country code
- US
DNS records
37 records in 7 types
- A
2 records
IPv4 addresses the name points to
- 104.17.5.3
- 104.17.6.3
- AAAA
2 records
IPv6 addresses the name points to
- 2606:4700::6811:503
- 2606:4700::6811:603
- NS
2 records
Nameservers that answer for the zone
- kirk.ns.cloudflare.com
- dolly.ns.cloudflare.com
- MX
2 records
Mail servers, lowest priority first
- 10 mxa-00807701.gslb.pphosted.com
- 10 mxb-00807701.gslb.pphosted.com
- CAA
10 records
Certificate authorities allowed to issue certificates
- 0 issue "comodoca.com"
- 0 issue "digicert.com; cansignhttpexchanges=yes"
- 0 issue "letsencrypt.org"
- 0 issue "pki.goog; cansignhttpexchanges=yes"
- 0 issue "ssl.com"
- 0 issuewild "comodoca.com"
- 0 issuewild "digicert.com; cansignhttpexchanges=yes"
- 0 issuewild "letsencrypt.org"
- 0 issuewild "pki.goog; cansignhttpexchanges=yes"
- 0 issuewild "ssl.com"
- SOA
1 record
Zone authority: primary nameserver, admin mailbox and timers
- dolly.ns.cloudflare.com dns.cloudflare.com 2417393593 10000 2400 604800 1800
- TXT
18 records
1 SPF policy, 13 ownership proofs, 4 other
- cdn.webflow.com
- jbUc6od99XEXvSgXm3x8fEogcBA
- ZOOM_verify_Ron95oipJms9tk66npIAXu
- apple-domain-verification=5ruC0k2u5Lq01vRE
SSL certificate
- Status
- Valid certificateTrusted by browsers and covers backblaze.com. Expires in 89 days.
- Issuer
- Let's Encrypt (YE1)
- Common name
- backblaze.com
- Protocol
- TLSv1.3
- Valid from
- October 13, 2026 at 03:12 PM UTC
- Valid to
- January 11, 2027 at 03:12 PM UTCExpires in 89 days
Covered hostnames
2 names- backblaze.com
- www.tng.backblaze.com
Certificate chain
5 certificatesbackblaze.com
Server certificate · Issued by Let's Encrypt (YE1) · Valid to 11 Jan 2027
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
- 05CB13A71D7EBFF6E0B6EBB1861A3568ADE0
- SHA-256
- 3C:31:A2:8D:F2:9F:A3:7D:94:9B:0C:5C:74:69:C1:CD:27:45:BF:67:91:09:97:32:5C:EE:DD:CE:05:FD:44:B1
- SHA-1
- C1:99:28:E5:FA:E4:0C:88:4C:CE:E9:71:B7:E1:FA:9A:A0:7B:19:12
Domain registration
Registered 02 Apr 2007
Expires in 170 daysRegistration data for backblaze.com, from the registry's RDAP or WHOIS service.
- Registrar
- Cloudflare, Inc.IANA ID 1910
- Registrant country
- US
- Registered
- 02 Apr 200719 years, 6 months old
- Expires
- 02 Apr 2027Expires in 170 days
- Last updated
- 03 Mar 2026
- DNSSEC
- Signed
- Abuse email
- registrar-abuse@cloudflare.com
- Abuse phone
- +1.6503198930
Nameservers
2 nameservers- dolly.ns.cloudflare.com
- kirk.ns.cloudflare.com
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Run this lookup from code
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curl "https://hostingchecker.online/api/v1/check?query=backblaze.com" \
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