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▸ How many domains does 联通智慧安全科技有限公司 secure?

23,498

active domains whose current TLS certificate was issued by 联通智慧安全科技有限公司, as of - 0.01% of all attributed domains.

# rank #26 of all CAs# all records held: 23,876# subdomains: 618# intermediates: 33# China, Taiwan
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~/issuers/unknown/history·active domains
23,498
domains secured by 联通智慧安全科技有限公司 on 2026-10-15 · ▲ +12,808 (+119.81%) since 2025-06-30
8.9K13.5K18.1K22.8K27.4K2025-06-30: 10,690 active2025-07-31: 16,951 active2025-08-31: 17,003 active2025-09-30: 17,041 active2025-10-31: 17,041 active2025-11-30: 17,041 active2025-12-31: 22,734 active2026-01-31: 23,611 active2026-02-28: 23,611 active2026-03-31: 23,611 active2026-04-30: 24,482 active2026-05-31: 24,720 active2026-06-30: 24,927 active2026-07-31: 25,094 active2026-08-31: 25,093 active2026-09-01: 25,108 active2026-09-02: 25,162 active2026-09-03: 25,124 active2026-09-04: 25,111 active2026-09-05: 25,126 active2026-09-06: 25,097 active2026-09-07: 25,094 active2026-09-08: 25,142 active2026-09-09: 25,194 active2026-09-10: 25,232 active2026-09-11: 25,107 active2026-09-12: 25,063 active2026-09-13: 25,057 active2026-09-14: 25,059 active2026-09-15: 25,064 active2026-09-16: 25,088 active2026-09-17: 25,107 active2026-09-18: 25,112 active2026-09-19: 25,132 active2026-09-20: 25,132 active2026-09-21: 25,160 active2026-09-22: 25,134 active2026-09-23: 25,135 active2026-09-24: 25,575 active2026-09-25: 25,573 active2026-09-26: 25,578 active2026-09-27: 25,590 active2026-09-28: 25,574 active2026-09-29: 25,569 active2026-09-30: 25,554 active2026-10-01: 25,468 active2026-10-02: 25,412 active2026-10-03: 25,357 active2026-10-04: 25,320 active2026-10-05: 25,320 active2026-10-06: 25,299 active2026-10-07: 25,250 active2026-10-08: 25,114 active2026-10-09: 24,874 active2026-10-10: 24,616 active2026-10-11: 24,370 active2026-10-12: 24,074 active2026-10-13: 23,814 active2026-10-14: 23,616 active2026-10-15: 23,498 active2025-06-302026-10-15

# y-axis starts at 8.9K, 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
▼ -6.25%
-1,566 domains
90 days
▼ -5.73%
-1,429 domains
1 year
▲ +37.89%
+6,457 domains
# intermediate CAs
Intermediate certificate authorities operating under 联通智慧安全科技有限公司, with the number of active domains each currently secures.
intermediatecountrydomains
Xcc Trust OV SSL CAChina9,234
TLC DV TLS CAChina6,814
宝塔 DV TLS RSA CA 2025China4,391
Xinnet DV SSLChina1,578
cnTrus OV SSL CAChina308
宝塔 DV TLS CAChina262
纳网 RSA Domain Validation Secure Server CAChina212
SanFront DV TLS RSA CA G2China162
Xinnet OV SSLChina98
政府伺服器數位憑證管理中心 - G1Taiwan75
SanFront OV TLS RSA CA G2China64
Xinnet OV TLS RSA CA G2China55
Xinnet DV TLS RSA CA G2China51
时代互联 RSA DV SSL CAChina38
ZwTrus DV SSL CAChina38
纳网 RSA Extended Validation Secure Server CAChina31
ZwTrus OV SSL CAChina26
纳网 RSA Organization Validation Secure Server CAChina22
宝塔 TLS RSA CA 2025China19
TLC OV TLS CAChina13
TLC RSA DV SSL CA 2China2
时代互联 RSA OV SSL CAChina2
ZwTrus EV SSL CAChina2
TLC EV TLS CAChina1
CHINA UNICOM DV TLS RSA CA 2026China0
CHINA UNICOM OV TLS RSA CA 2026China0
时代互联 RSA EV SSL CAChina0
cerschool OV TLS RSA CA G1China0
SanFront DV TLS RSA CA G1China0
SanFront OV TLS RSA CA G1China0
FJCA ECC OV SSL CAChina0
ZDNS RSA DV SSL CAChina0
上海锐成信息科技有限公司 OV CAChina0
# faq
? How many domains does 联通智慧安全科技有限公司 secure?
联通智慧安全科技有限公司 is the certificate authority for 23,498 active domains as of October 15, 2026 - 0.01% of every domain DNSniffer can attribute to an issuer.
? Is 联通智慧安全科技有限公司 gaining or losing market share?
The number of domains secured by 联通智慧安全科技有限公司 has grown by 37.89% over the last year (+6,457 domains).
? Which intermediate CAs does 联通智慧安全科技有限公司 sign from?
We have seen 33 intermediates under 联通智慧安全科技有限公司, the busiest being “Xcc Trust OV SSL CA” with 9,234 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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