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~/dnsniffer/issuers/shanghai-huandu-info-tech·rank #51

▸ How many domains does Shanghai Huandu Info Tech secure?

4,074

active domains whose current TLS certificate was issued by Shanghai Huandu Info Tech, as of - 0.00% of all attributed domains.

# rank #51 of all CAs# all records held: 4,198# subdomains: 40# intermediates: 4# China
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~/issuers/shanghai-huandu-info-tech/history·active domains
4,074
domains secured by Shanghai Huandu Info Tech on 2026-10-15 · ▲ +2,530 (+163.86%) since 2025-06-30
1.2K2.0K2.8K3.6K4.4K2025-06-30: 1,544 active2025-07-31: 2,501 active2025-08-31: 2,553 active2025-09-30: 2,571 active2025-10-31: 2,571 active2025-11-30: 2,571 active2025-12-31: 3,126 active2026-01-31: 3,223 active2026-02-28: 3,223 active2026-03-31: 3,223 active2026-04-30: 3,379 active2026-05-31: 3,415 active2026-06-30: 3,471 active2026-07-31: 3,565 active2026-08-31: 3,565 active2026-09-01: 3,568 active2026-09-02: 3,572 active2026-09-03: 3,582 active2026-09-04: 3,570 active2026-09-05: 3,587 active2026-09-06: 3,476 active2026-09-07: 3,418 active2026-09-08: 3,454 active2026-09-09: 3,473 active2026-09-10: 3,484 active2026-09-11: 3,506 active2026-09-12: 3,528 active2026-09-13: 3,532 active2026-09-14: 3,542 active2026-09-15: 3,570 active2026-09-16: 3,586 active2026-09-17: 3,598 active2026-09-18: 3,627 active2026-09-19: 3,644 active2026-09-20: 3,656 active2026-09-21: 3,666 active2026-09-22: 3,680 active2026-09-23: 3,692 active2026-09-24: 3,909 active2026-09-25: 3,925 active2026-09-26: 3,929 active2026-09-27: 3,932 active2026-09-28: 3,944 active2026-09-29: 3,965 active2026-09-30: 3,983 active2026-10-01: 3,991 active2026-10-02: 3,989 active2026-10-03: 3,986 active2026-10-04: 3,986 active2026-10-05: 3,986 active2026-10-06: 3,986 active2026-10-07: 3,985 active2026-10-08: 3,990 active2026-10-09: 4,006 active2026-10-10: 4,022 active2026-10-11: 4,024 active2026-10-12: 4,023 active2026-10-13: 4,042 active2026-10-14: 4,060 active2026-10-15: 4,074 active2025-06-302026-10-15

# y-axis starts at 1.2K, 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
▲ +14.12%
+504 domains
90 days
▲ +17.37%
+603 domains
1 year
▲ +58.46%
+1,503 domains
# intermediate CAs
Intermediate certificate authorities operating under Shanghai Huandu Info Tech, with the number of active domains each currently secures.
intermediatecountrydomains
KeepTrust DV TLS RSA CA G1China2,323
KeepTrust DV TLS RSA CA G2China1,427
KeepTrust OV TLS RSA CA G1China254
KeepTrust OV TLS RSA CA G2China70
# faq
? How many domains does Shanghai Huandu Info Tech secure?
Shanghai Huandu Info Tech is the certificate authority for 4,074 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is Shanghai Huandu Info Tech gaining or losing market share?
The number of domains secured by Shanghai Huandu Info Tech has grown by 58.46% over the last year (+1,503 domains).
? Which intermediate CAs does Shanghai Huandu Info Tech sign from?
We have seen 4 intermediates under Shanghai Huandu Info Tech, the busiest being “KeepTrust DV TLS RSA CA G1” with 2,323 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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