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~/dnsniffer/issuers/amazon·rank #6

▸ How many domains does Amazon secure?

2,564,877

active domains whose current TLS certificate was issued by Amazon, as of - 1.08% of all attributed domains.

# rank #6 of all CAs# all records held: 2,963,367# subdomains: 2,411,720# intermediates: 34# Germany, United States
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~/issuers/amazon/history·active domains
2,564,877
domains secured by Amazon on 2026-10-15 · ▲ +1,505,454 (+142.10%) since 2025-06-30
878.8K1.35M1.81M2.28M2.75M2025-06-30: 1,059,423 active2025-07-31: 1,699,354 active2025-08-31: 1,720,013 active2025-09-30: 1,730,327 active2025-10-31: 1,730,327 active2025-11-30: 1,730,327 active2025-12-31: 1,960,459 active2026-01-31: 2,042,472 active2026-02-28: 2,042,472 active2026-03-31: 2,042,472 active2026-04-30: 2,296,320 active2026-05-31: 2,370,574 active2026-06-30: 2,447,882 active2026-07-31: 2,520,380 active2026-08-31: 2,520,368 active2026-09-01: 2,522,026 active2026-09-02: 2,527,341 active2026-09-03: 2,431,697 active2026-09-04: 2,417,835 active2026-09-05: 2,419,674 active2026-09-06: 2,420,319 active2026-09-07: 2,414,106 active2026-09-08: 2,419,917 active2026-09-09: 2,426,354 active2026-09-10: 2,428,702 active2026-09-11: 2,432,076 active2026-09-12: 2,432,425 active2026-09-13: 2,436,007 active2026-09-14: 2,438,205 active2026-09-15: 2,444,829 active2026-09-16: 2,451,178 active2026-09-17: 2,452,604 active2026-09-18: 2,450,222 active2026-09-19: 2,450,246 active2026-09-20: 2,451,900 active2026-09-21: 2,453,829 active2026-09-22: 2,459,650 active2026-09-23: 2,466,330 active2026-09-24: 2,500,059 active2026-09-25: 2,501,676 active2026-09-26: 2,501,760 active2026-09-27: 2,504,708 active2026-09-28: 2,508,094 active2026-09-29: 2,511,889 active2026-09-30: 2,518,393 active2026-10-01: 2,520,652 active2026-10-02: 2,520,283 active2026-10-03: 2,520,112 active2026-10-04: 2,521,094 active2026-10-05: 2,524,062 active2026-10-06: 2,529,694 active2026-10-07: 2,536,494 active2026-10-08: 2,538,548 active2026-10-09: 2,541,091 active2026-10-10: 2,542,240 active2026-10-11: 2,546,745 active2026-10-12: 2,549,767 active2026-10-13: 2,555,007 active2026-10-14: 2,563,027 active2026-10-15: 2,564,877 active2025-06-302026-10-15

# y-axis starts at 878.8K, 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
▲ +4.91%
+120,048 domains
90 days
▲ +4.78%
+116,995 domains
1 year
▲ +48.23%
+834,550 domains
# intermediate CAs
Intermediate certificate authorities operating under Amazon, with the number of active domains each currently secures.
intermediatecountrydomains
Amazon RSA 2048 M04-1,207,049
Amazon RSA 2048 M01United States1,193,716
Amazon RSA 2048 M03United States58,025
Amazon RSA 2048 M02United States57,596
Amazon RSA 2048 S21United States6,990
Amazon RSA 2048 S20United States6,794
Amazon RSA 2048 S18United States6,500
Amazon RSA 2048 S19United States6,378
Amazon RSA 2048 S24United States5,771
Amazon RSA 2048 S25United States5,689
Amazon RSA 2048 S22United States5,077
Amazon RSA 2048 S23United States5,066
Amazon RSA 2048 EU S01Germany38
Amazon RSA 2048 EU S00Germany36
Amazon RSA 2048 S06United States21
Amazon RSA 2048 S10United States15
Amazon RSA 2048 S17United States15
Amazon RSA 2048 S09United States14
Amazon RSA 2048 S15United States14
Amazon RSA 2048 S13United States13
Amazon RSA 2048 S08United States12
Amazon RSA 2048 S12United States12
Amazon RSA 2048 S07United States10
Amazon RSA 2048 S11United States9
Amazon RSA 2048 S14United States9
Amazon RSA 2048 S16United States8
Amazon RSA 2048 EU M01Germany0
Amazon RSA 4096 M03United States0
Amazon RSA 4096 M01United States0
Amazon RSA 2048 M06United States0
Amazon RSA 2048 M05United States0
Amazon RSA 4096 M02United States0
Amazon RSA 4096 M04United States0
AmazonUnited States0
# faq
? How many domains does Amazon secure?
Amazon is the certificate authority for 2,564,877 active domains as of October 15, 2026 - 1.08% of every domain DNSniffer can attribute to an issuer.
? Is Amazon gaining or losing market share?
The number of domains secured by Amazon has grown by 48.23% over the last year (+834,550 domains).
? Which intermediate CAs does Amazon sign from?
We have seen 34 intermediates under Amazon, the busiest being “Amazon RSA 2048 M04” with 1,207,049 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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