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~/dnsniffer/issuers/cloudflare·rank #70

▸ How many domains does Cloudflare secure?

2,423

active domains whose current TLS certificate was issued by Cloudflare, as of - 0.00% of all attributed domains.

# rank #70 of all CAs ▼ 14 in 30d# all records held: 5,482# subdomains: 0# intermediates: 2# United States
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~/issuers/cloudflare/history·active domains
2,423
domains secured by Cloudflare on 2026-10-15 · ▲ +1,947 (+409.03%) since 2025-06-30
01.6K3.1K4.7K6.2K2025-06-30: 476 active2025-07-31: 5,284 active2025-08-31: 5,339 active2025-09-30: 5,358 active2025-10-31: 5,358 active2025-11-30: 5,358 active2025-12-31: 5,541 active2026-01-31: 5,569 active2026-02-28: 5,569 active2026-03-31: 5,569 active2026-04-30: 5,613 active2026-05-31: 5,613 active2026-06-30: 5,613 active2026-07-31: 5,613 active2026-08-31: 5,613 active2026-09-01: 5,603 active2026-09-02: 5,598 active2026-09-03: 5,591 active2026-09-04: 5,570 active2026-09-05: 5,014 active2026-09-06: 4,772 active2026-09-07: 4,417 active2026-09-08: 4,217 active2026-09-09: 3,885 active2026-09-10: 3,635 active2026-09-11: 3,311 active2026-09-12: 3,196 active2026-09-13: 3,193 active2026-09-14: 3,184 active2026-09-15: 3,094 active2026-09-16: 2,750 active2026-09-17: 2,437 active2026-09-18: 2,288 active2026-09-19: 2,086 active2026-09-20: 2,060 active2026-09-21: 2,050 active2026-09-22: 2,049 active2026-09-23: 2,038 active2026-09-24: 2,931 active2026-09-25: 2,930 active2026-09-26: 2,924 active2026-09-27: 2,921 active2026-09-28: 2,481 active2026-09-29: 2,475 active2026-09-30: 2,474 active2026-10-01: 2,473 active2026-10-02: 2,467 active2026-10-03: 2,461 active2026-10-04: 2,457 active2026-10-05: 2,454 active2026-10-06: 2,451 active2026-10-07: 2,448 active2026-10-08: 2,435 active2026-10-09: 2,433 active2026-10-10: 2,431 active2026-10-11: 2,431 active2026-10-12: 2,430 active2026-10-13: 2,428 active2026-10-14: 2,425 active2026-10-15: 2,423 active2025-06-302026-10-15

# y-axis starts at 0, not zero - domain counts move by fractions of a percent a day. Dashed segments are estimated: reconstructed from certificate first-seen dates before daily snapshots began, not measured on the day.

# change over time
30 days
▼ -21.69%
-671 domains
90 days
▼ -56.83%
-3,190 domains
1 year
▼ -54.78%
-2,935 domains
# intermediate CAs
Intermediate certificate authorities operating under Cloudflare, with the number of active domains each currently secures.
intermediatecountrydomains
Cloudflare TLS Issuing RSA CA 1-2,412
Cloudflare TLS Issuing ECC CA 1United States11
# faq
? How many domains does Cloudflare secure?
Cloudflare is the certificate authority for 2,423 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is Cloudflare gaining or losing market share?
The number of domains secured by Cloudflare has shrunk by 54.78% over the last year (-2,935 domains).
? Which intermediate CAs does Cloudflare sign from?
We have seen 2 intermediates under Cloudflare, the busiest being “Cloudflare TLS Issuing RSA CA 1” with 2,412 domains. The full list, with per-intermediate counts, is on this page.
? Where does this number come from?
DNSniffer ingests Certificate Transparency logs continuously and records the issuer of the most recent certificate seen for each domain, then snapshots the per-issuer count once a day. It measures how much of the live web a CA currently secures, not how many certificates it has issued over its lifetime.
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