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Root certificate · Deutsche Telekom Security

T-TeleSec GlobalRoot Class 3

T-TeleSec GlobalRoot Class 3 is a root CA certificate operated by Deutsche Telekom Security (RSA 2048, valid until 2033-10-01, SHA-256 FD73DAD3). As of the latest CCADB data it is trusted for TLS server authentication by 4 of 4 major root stores: Chrome, Mozilla, Apple, Microsoft.

Data updated

Root store status

Root storeStatusTrusted for TLSDistrust for TLS afterConstrained
ChromeIncluded IncludedYes2026-05-28Yes
MozillaIncluded IncludedYes—No
AppleIncluded IncludedYes—Yes
MicrosoftIncluded IncludedYes—Yes

Chrome stops trusting TLS certificates under this root whose SCTs are dated after 2026-05-28 (sct_not_after). Mozilla treats it as an EV root for policy OID 1.3.6.1.4.1.7879.13.24.1.

Included Chrome

Status
Included
Distrust for TLS after
2026-05-28

Included Mozilla

Status
Included
Trust bits
Websites
EV policy OIDs
1.3.6.1.4.1.7879.13.24.1
First included in
NSS 3.14 / Firefox 18
Inclusion bug
#669849

Included Apple

Status
Included
Trust bits
serverAuth, clientAuth
Allowed policies
Server Authentication, Client Authentication, Code Signing, Timestamp Signing

Included Microsoft

Status
Included
Trusted EKUs
Server Authentication, Client Authentication, OCSP Signing, Secure Email
Not-before cutoff
2025-09-15 (OCSP Signing, Secure Email)
Disallowed EKUs
OCSP Signing

"Trusted for TLS" means the store includes the root with the server-authentication trust bit (Mozilla "Websites", Apple serverAuth, Microsoft Server Authentication EKU). Microsoft "NotBefore" means only certificates issued before a cutoff date are still trusted. "Constrained" means the store applies extra restrictions.

Details

CA owner
Deutsche Telekom Security GmbH
Subject
CN=T-TeleSec GlobalRoot Class 3,OU=T-Systems Trust Center,O=T-Systems Enterprise Services GmbH,C=DE
SHA-256
FD73DAD31C644FF1B43BEF0CCDDA96710B9CD9875ECA7E31707AF3E96D522BBD
SHA-1 (Windows thumbprint)
55A6723ECBF2ECCDC3237470199D2ABE11E381D1
SPKI SHA-256
8D767764B3CBDA08929D072A22A561F4DCDD1BC57D3CBDDC948C47D2B47F9122
Valid from
2008-10-01
Expires
2033-10-01
Key
RSA 2048
Signature algorithm
sha256WithRSAEncryption
Serial number
1
Country
DE
Trust bits (CCADB)
Server Authentication, Client Authentication
EV policy OIDs (CCADB)
1.3.6.1.4.1.7879.13.24.1, 2.23.140.1.1 · TLS EV capable: Yes
Test websites
valid: https://root-class3.test.telesec.de/ · expired: https://root-class3-expired.test.telesec.de/ · revoked: https://root-class3-revoked.test.telesec.de/
CCADB record
A000221
PEM
telekom-security-t-telesec-globalroot-class-3.pem

Look up this certificate on crt.sh

Intermediate CAs issued by this root

The CCADB lists 9 intermediate CA certificates signed directly by T-TeleSec GlobalRoot Class 3: 4 currently valid, 2 expired and 3 revoked (revoked includes those whose parent was revoked).

Showing 9 of 9: valid certificates first, newest first. Each name links to its crt.sh entry by SHA-256; an arrow marks a cross-certificate for another root on this site.

IntermediateOperated byExpiresStatus
Telekom Security TLS RSA Root 2023 → Telekom Security TLS RSA Root 2023 Deutsche Telekom Security GmbH2033-09-30Valid
Telekom Security TLS ECC Root 2020 → Telekom Security TLS ECC Root 2020 Deutsche Telekom Security GmbH2033-09-30Valid
Telekom Security EV RSA CA 23A Deutsche Telekom Security GmbH2033-06-19Valid
Telekom Security ServerID EV Class 3 CA Deutsche Telekom Security GmbH2027-08-02Valid
TeleSec ServerPass Extended Validation Class 3 CA Deutsche Telekom Security GmbH2024-02-11Expired
T-TeleSec Extended Validation SSL CA Class 3 Deutsche Telekom Security GmbH2018-10-01Expired
Telekom Security EV RSA CA 22 Deutsche Telekom Security GmbH2032-06-21Revoked
TeleSec GlobalRoot Class 3 G2 Deutsche Telekom Security GmbH2029-02-12Revoked
TeleSec GlobalRoot Class 3 G2 Deutsche Telekom Security GmbH2026-02-23Revoked

Cross-signed versions

1 certificate(s) in the CCADB have the same subject and public key as T-TeleSec GlobalRoot Class 3 but a different issuer. A server can send one of them so that clients which trust the issuing root, but not T-TeleSec GlobalRoot Class 3, can still build a chain.

Signed byCA ownerExpiresStatus
Deutsche Telekom Root CA 2 crt.sh Deutsche Telekom Security GmbH2018-10-01Expired

CRL and OCSP addresses

In the root certificate

T-TeleSec GlobalRoot Class 3 itself contains no CRL Distribution Points and no OCSP (Authority Information Access) extension. That is normal for a root: clients trust it directly and do not check its own revocation status.

Full CRL this CA publishes (CCADB)

  • http://pki.telesec.de/rl/GlobalRoot_Class_3.crl

Used by the intermediates it issued

Addresses found in the CRL Distribution Points and OCSP fields of the 4 valid intermediates signed by T-TeleSec GlobalRoot Class 3; the number in brackets is how many of them use each address.

  • CRL: http://grcl3.crl.telesec.de/rl/T-TeleSec_GlobalRoot_Class_3.crl (4)
  • OCSP: http://grcl3.ocsp.telesec.de/ocspr (2)

What happens when it expires

T-TeleSec GlobalRoot Class 3 is valid until 2033-10-01, about 6.9 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. Root programs can stop trusting it before it expires: Chrome 2026-05-28.

Check whether your device trusts it

Each platform keeps its own root store. The commands below look up T-TeleSec GlobalRoot Class 3 by common name (T-TeleSec GlobalRoot Class 3) or fingerprint. The store status in each heading comes from the CCADB snapshot; your device can differ if it is out of date or managed by an administrator.

macOS (Apple store: Included · Trusted for TLS)

Search the system roots keychain by common name. -Z prints the SHA-256 hash, which must match the fingerprint on the last line.

security find-certificate -a -c "T-TeleSec GlobalRoot Class 3" -Z \
  /System/Library/Keychains/SystemRootCertificates.keychain | grep "SHA-256"
# SHA-256 hash: FD73DAD31C644FF1B43BEF0CCDDA96710B9CD9875ECA7E31707AF3E96D522BBD

Windows (Microsoft store: Included · Trusted for TLS)

Windows identifies roots by SHA-1 thumbprint. It installs third-party roots on demand through Automatic Root Certificates Update, so "not found" can also mean the root has not been needed yet; certutil -generateSSTFromWU roots.sst downloads Microsoft's full list.

certutil -verifystore Root 55A6723ECBF2ECCDC3237470199D2ABE11E381D1

Linux (ca-certificates follows Mozilla: Included · Trusted for TLS)

Debian, Ubuntu, Fedora and RHEL build their ca-certificates package from Mozilla's root store. Use trust list on p11-kit systems, or search the PEM bundle on Debian and Ubuntu.

# Fedora / RHEL / Arch (p11-kit)
trust list --filter=ca-anchors | grep -iF -A2 "T-TeleSec GlobalRoot Class 3"
# Debian / Ubuntu (ca-certificates)
openssl crl2pkcs7 -nocrl -certfile /etc/ssl/certs/ca-certificates.crt \
  | openssl pkcs7 -print_certs -noout | grep -iF "T-TeleSec GlobalRoot Class 3"

Java

Java ships its own cacerts keystore; JDK 9 and later accept -cacerts and the default store password is changeit. Search for the SHA-256 fingerprint in colon form.

keytool -list -cacerts -storepass changeit | grep -i "FD:73:DA:D3:1C:64:4F:F1:B4:3B:EF:0C:CD:DA:96:71:0B:9C:D9:87:5E:CA:7E:31:70:7A:F3:E9:6D:52:2B:BD"

Android

Android's system store is maintained by Google separately from the four CCADB stores above. Open Settings → Security & privacy → More security settings → Encryption & credentials → Trusted credentials → System (menu names vary by vendor and version) and look for T-Systems Enterprise Services GmbH → T-TeleSec GlobalRoot Class 3.

Which root does my site chain to?

List the chain your server sends and compare the last issuer with this root; the fingerprint check confirms a local copy.

Download PEM

# show subject (s:) and issuer (i:) of every certificate the server sends
openssl s_client -connect example.com:443 -servername example.com -showcerts </dev/null 2>/dev/null \
  | grep -E '^ *[0-9]+ s:|^ *i:'
# subject and SHA-256 fingerprint of the downloaded PEM file
openssl x509 -in telekom-security-t-telesec-globalroot-class-3.pem -noout -subject -fingerprint -sha256
# sha256 Fingerprint=FD:73:DA:D3:1C:64:4F:F1:B4:3B:EF:0C:CD:DA:96:71:0B:9C:D9:87:5E:CA:7E:31:70:7A:F3:E9:6D:52:2B:BD

FAQ

Is T-TeleSec GlobalRoot Class 3 trusted by Chrome, Firefox, Safari and Windows?

Yes. As of 2026-11-10, Chrome, Mozilla (Firefox), Apple (Safari) and Microsoft (Windows) all trust it for TLS server authentication. Distrust-after dates already set: Chrome 2026-05-28.

When does T-TeleSec GlobalRoot Class 3 expire?

On 2033-10-01, about 6.9 years after the 2026-11-10 data snapshot.

How many intermediate certificates has T-TeleSec GlobalRoot Class 3 issued?

The CCADB lists 9: 4 valid, 2 expired and 3 revoked. The newest valid one is Telekom Security TLS RSA Root 2023, valid until 2033-09-30.

Is T-TeleSec GlobalRoot Class 3 cross-signed?

Yes. The CCADB has 1 cross-certificate(s) with its subject and key, signed by Deutsche Telekom Root CA 2; 0 of them are still valid.

Other roots from Deutsche Telekom Security

Sources

  1. CCADB — Resources (TLS Server Authentication report, All Included Root Certificate Trust Bit Settings)
  2. CCADB — All Certificate Information (root and intermediate), CSV V5
  3. CCADB — Mozilla Included CA Certificate Report
  4. CCADB — Chrome / Mozilla / Apple / Microsoft TLS Server Authentication CSV