# COMODO Certification Authority root certificate (Sectigo, SHA-256 1A0D2044)

> COMODO Certification Authority is a root CA certificate operated by Sectigo (RSA 2048, valid until 2030-12-31, SHA-256 1A0D2044). As of the latest CCADB data it is trusted for TLS server authentication by 1 of 4 major root stores: Microsoft.

Source: https://ssl.sh/roots/sectigo-comodo-ca-1a0d2044/
Last updated: 2026-11-10

COMODO Certification Authority is a root CA certificate operated by Sectigo (RSA 2048, valid until 2030-12-31, SHA-256 1A0D2044). As of the latest CCADB data it is trusted for TLS server authentication by 1 of 4 major root stores: Microsoft.

| Field | Value |
|---|---|
| CA owner | Sectigo |
| Subject | CN=COMODO Certification Authority,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB |
| SHA-256 | 1A0D20445DE5BA1862D19EF880858CBCE50102B36E8F0A040C3C69E74522FE6E |
| SPKI SHA-256 | 006D7BE7555DD82026442C4F1A27A80E89A1989CB87B34448ED2194C18196D5E |
| Valid from | 2011-01-01 |
| Expires | 2030-12-31 |
| Key | RSA 2048 |
| Signature algorithm | sha1WithRSAEncryption |
| Serial number | 20A4C47FDDDFE1C75363071388776012 |
| SHA-1 (Windows thumbprint) | EE869387FFFD8349AB5AD14322588789A457B012 |

## Root store status

| Root store | Status | Trusted for TLS | Distrust for TLS after | Details |
|---|---|---|---|---|
| Chrome | Removed | No | - | - |
| Mozilla | Not included | No | - | - |
| Apple | Not included | No | - | - |
| Microsoft | Included | Yes | - | Trusted EKUs: Server Authentication, Client Authentication, Code Signing, Encrypting File System, IP Security Tunnel Termination, IP Security User, Secure Email, Time Stamping |

The CCADB lists EV policy OID 2.23.140.1.3, 1.3.6.1.4.1.6449.1.2.1.5.1 for this root, but Mozilla does not mark it as EV-enabled.

## Intermediate CAs issued by this root

The CCADB lists no intermediate CA certificate signed directly by COMODO Certification Authority.


## Cross-signed versions

5 certificate(s) in the CCADB have the same subject and public key as COMODO Certification Authority but a different issuer. A server can send one of them so that clients which trust the issuing root, but not COMODO Certification Authority, can still build a chain.

| Signed by | CA owner | Expires | Status | SHA-256 |
|---|---|---|---|---|
| AddTrust External CA Root | Sectigo | 2020-05-30 | Expired | 3717F5EADF9A9753AB6CAAD8C6805423FBEC758CC25CA91A2B233D545A17BFE6 |
| UTN-USERFirst-Hardware | Sectigo | 2020-05-30 | Expired | B00DAA3BE3630F729834AADBDEE5A19C5538F916556425F83669B0CDC45B3590 |
| UTN-USERFirst-Hardware | Sectigo | 2020-05-30 | Expired | 665C4DE8D0F419377345E228736143EF648BD727119E60D32F50DCF1FE83864B |
| UTN - DATACorp SGC | Sectigo | 2020-05-30 | Revoked | 59999DFD06B3CB1F73D66A81D551B097DC763D9730E4DF45762D923B416A4C58 |
| AddTrust External CA Root | Sectigo | 2020-05-30 | Expired | E780575EB081F2F35BCDE6B0373F5CFEF66490C5E383DB98F8D2A21CF0DF1A0B |

## What happens when it expires

COMODO Certification Authority is valid until 2030-12-31, about 4.1 years after this data snapshot (2026-11-10). From that day, browsers and operating systems that check trust-anchor expiry stop accepting chains that end at this root, so any certificate that can only chain to it fails validation. Android is a known exception: it does not enforce the expiry date of trust anchors.

## FAQ

**Is COMODO Certification Authority trusted by Chrome, Firefox, Safari and Windows?**

As of 2026-11-10, Microsoft trust it for TLS server authentication; Chrome, Mozilla, Apple do not.

**When does COMODO Certification Authority expire?**

On 2030-12-31, about 4.1 years after the 2026-11-10 data snapshot.

**How many intermediate certificates has COMODO Certification Authority issued?**

The CCADB lists no intermediate certificate signed directly by COMODO Certification Authority.

**Is COMODO Certification Authority cross-signed?**

Yes. The CCADB has 5 cross-certificate(s) with its subject and key, signed by AddTrust External CA Root, UTN-USERFirst-Hardware, UTN - DATACorp SGC; 0 of them are still valid.

Sources: CCADB TLS Server Authentication report, All Included Root Certificate Trust Bit Settings, All Certificate Information (V5), the per-store TLS reports and Mozilla's Included CA Certificate Report (ccadb.org/resources).