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~/dnsniffer/issuers/microsec·rank #101

▸ How many domains does Microsec secure?

523

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

# rank #101 of all CAs ▲ 1 in 30d# all records held: 534# subdomains: 102# intermediates: 10# Hungary
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~/issuers/microsec/history·active domains
523
domains secured by Microsec on 2026-10-14 · ▲ +423 (+423.00%) since 2025-06-30
48.28181.89315.5449.11582.722025-06-30: 100 active2025-07-31: 389 active2025-08-31: 389 active2025-09-30: 395 active2025-10-31: 395 active2025-11-30: 395 active2025-12-31: 402 active2026-01-31: 416 active2026-02-28: 416 active2026-03-31: 416 active2026-04-30: 427 active2026-05-31: 428 active2026-06-30: 429 active2026-07-31: 429 active2026-08-31: 429 active2026-09-01: 429 active2026-09-02: 428 active2026-09-03: 427 active2026-09-04: 429 active2026-09-05: 430 active2026-09-06: 419 active2026-09-07: 405 active2026-09-08: 404 active2026-09-09: 409 active2026-09-10: 411 active2026-09-11: 423 active2026-09-12: 425 active2026-09-13: 424 active2026-09-14: 424 active2026-09-15: 429 active2026-09-16: 436 active2026-09-17: 439 active2026-09-18: 439 active2026-09-19: 446 active2026-09-20: 444 active2026-09-21: 444 active2026-09-22: 447 active2026-09-23: 447 active2026-09-24: 525 active2026-09-25: 531 active2026-09-26: 525 active2026-09-27: 523 active2026-09-28: 522 active2026-09-29: 520 active2026-09-30: 517 active2026-10-01: 524 active2026-10-02: 521 active2026-10-03: 521 active2026-10-04: 520 active2026-10-05: 517 active2026-10-06: 517 active2026-10-07: 517 active2026-10-08: 516 active2026-10-09: 515 active2026-10-10: 519 active2026-10-11: 517 active2026-10-12: 516 active2026-10-13: 520 active2026-10-14: 523 active2025-06-302026-10-14

# y-axis starts at 48.28, 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
▲ +23.35%
+99 domains
90 days
▲ +21.91%
+94 domains
1 year
▲ +32.41%
+128 domains
# intermediate CAs
Intermediate certificate authorities operating under Microsec, with the number of active domains each currently secures.
intermediatecountrydomains
e-Szigno RSA OV TLS CA 2026Hungary232
e-Szigno SSL CA 2014Hungary178
e-Szigno RSA OV TLS CA 2025Hungary105
Qualified e-Szigno TLS CA 2018Hungary6
e-Szigno RSA DV TLS CA 2026Hungary1
e-Szigno RSA Qualified TLS CA 2026Hungary1
Advanced Class 3 e-Szigno CA 2009Hungary0
Class2 e-Szigno SSL CA 2016Hungary0
Online e-Szigno SSL CA 2016Hungary0
e-Szigno RSA DV TLS CA 2025Hungary0
# faq
? How many domains does Microsec secure?
Microsec is the certificate authority for 523 active domains as of October 14, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is Microsec gaining or losing market share?
The number of domains secured by Microsec has grown by 32.41% over the last year (+128 domains).
? Which intermediate CAs does Microsec sign from?
We have seen 10 intermediates under Microsec, the busiest being “e-Szigno RSA OV TLS CA 2026” with 232 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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