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~/dnsniffer/issuers/internet2·rank #78

▸ How many domains does Internet2 secure?

1,770

active domains whose current TLS certificate was issued by Internet2, as of - 0.00% of all attributed domains.

# rank #78 of all CAs ▲ 3 in 30d# all records held: 1,804# subdomains: 4,707# intermediates: 6# United States
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~/issuers/internet2/history·active domains
1,770
domains secured by Internet2 on 2026-10-15 · ▲ +633 (+55.67%) since 2025-06-30
1.1K1.3K1.5K1.6K1.8K2025-06-30: 1,137 active2025-07-31: 1,214 active2025-08-31: 1,214 active2025-09-30: 1,214 active2025-10-31: 1,214 active2025-11-30: 1,214 active2025-12-31: 1,219 active2026-01-31: 1,221 active2026-02-28: 1,221 active2026-03-31: 1,221 active2026-04-30: 1,227 active2026-05-31: 1,230 active2026-06-30: 1,235 active2026-07-31: 1,240 active2026-08-31: 1,245 active2026-09-01: 1,265 active2026-09-02: 1,298 active2026-09-03: 1,321 active2026-09-04: 1,325 active2026-09-05: 1,334 active2026-09-06: 1,282 active2026-09-07: 1,251 active2026-09-08: 1,253 active2026-09-09: 1,327 active2026-09-10: 1,332 active2026-09-11: 1,365 active2026-09-12: 1,376 active2026-09-13: 1,324 active2026-09-14: 1,303 active2026-09-15: 1,359 active2026-09-16: 1,386 active2026-09-17: 1,433 active2026-09-18: 1,442 active2026-09-19: 1,457 active2026-09-20: 1,414 active2026-09-21: 1,403 active2026-09-22: 1,468 active2026-09-23: 1,506 active2026-09-24: 1,529 active2026-09-25: 1,530 active2026-09-26: 1,528 active2026-09-27: 1,471 active2026-09-28: 1,463 active2026-09-29: 1,544 active2026-09-30: 1,585 active2026-10-01: 1,604 active2026-10-02: 1,599 active2026-10-03: 1,612 active2026-10-04: 1,537 active2026-10-05: 1,514 active2026-10-06: 1,585 active2026-10-07: 1,639 active2026-10-08: 1,693 active2026-10-09: 1,688 active2026-10-10: 1,680 active2026-10-11: 1,619 active2026-10-12: 1,584 active2026-10-13: 1,675 active2026-10-14: 1,701 active2026-10-15: 1,770 active2025-06-302026-10-15

# y-axis starts at 1.1K, 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
▲ +30.24%
+411 domains
90 days
▲ +43.32%
+535 domains
1 year
▲ +45.80%
+556 domains
# intermediate CAs
Intermediate certificate authorities operating under Internet2, with the number of active domains each currently secures.
intermediatecountrydomains
InCommon Intermediate CA - OVG2CUnited States989
InCommon RSA Server CA 2United States390
InCommon Intermediate CA - DVG2CUnited States380
InCommon RSA IGTF Server CA 4United States5
InCommon RSA IGTF Server CA 3United States4
InCommon Intermediate CA - EVG2CUnited States2
# faq
? How many domains does Internet2 secure?
Internet2 is the certificate authority for 1,770 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is Internet2 gaining or losing market share?
The number of domains secured by Internet2 has grown by 45.80% over the last year (+556 domains).
? Which intermediate CAs does Internet2 sign from?
We have seen 6 intermediates under Internet2, the busiest being “InCommon Intermediate CA - OVG2C” with 989 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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