KDDI株式会社

auone.jp · JP · Issued by DigiCert

Japanese telecommunications and mobile carrier company

★★★★ 8/10TelecommunicationsMajor Japanese telecom provider, well-known in Asia, Fortune 500

PrecertExpires in 7 monthsVMCRegisteredASN.1 crt.sh

Certificate Summary

Fingerprint (SHA-256)cd4f98e8a910263cd3427dae79ae47f3657c0e30223608cfeb6e7d8b47fa2fc6

Serial Number0f:31:26:20:97:7d:69:15:5d:fe:e3:15:99:19:57:58

Issued2025-08-27

Expires2026-09-27

Root CADigiCert

SubjectKDDI株式会社, JP

SANsauone.jp · 7 certs,ezweb.ne.jp · 8 certs,kddi.com · 2 certs,au.com · 8 certs

CT LogGorgon (DigiCert) #25021 · 2025-08-27 07:06 UTC (7 months ago)

Certificate Lint

3 errors21 passed

3 errors1 notice21 passed

MCR (Mark Certificate Requirements)3 fails

✓

EKU must contain BIMI OIDMCR §7.1.2.7 ↗

e_bimi_eku_present

✓

EKU must contain only BIMI OIDMCR §7.1.2.7 ↗

e_bimi_eku_single

✓

Name Constraints must not be presentMCR §7.1.2.7 ↗

e_bimi_no_name_constraints

✗

Key Usage must include digitalSignatureerrorMCR §7.1.2.7 ↗

Key Usage extension is missing

e_bimi_key_usage

✓

Validity period must not exceed 825 daysMCR §6.3.2 ↗

e_bimi_validity_period

✗

SCT List extension must be presenterrorMCR §7.1.2.7 ↗

SCT List extension is missing

e_bimi_sct_present

✓

Pilot ID extension must not be presentMCR §7.1.2.7 ↗

e_bimi_pilot_id_absent

✓

BIMI General Policy OID must be presentMCR §7.1.6.4 ↗

e_bimi_general_policy

✓

CPS URL must be present in certificate policiesMCR §7.1.6.4 ↗

e_bimi_cps_url_present

✓

Mark type must be present and validMCR §7.1.4.2.2 ↗

e_bimi_mark_type_valid

✗

Trademark Office must be present for Registered MarkerrorMCR §7.1.4.2 ↗

Missing Trademark Office (OID 1.3.6.1.4.1.53087.1.2) in subject DN

e_bimi_mark_type_dn_trademark_office

✓

Trademark Country must be present for Registered MarkMCR §7.1.4.2 ↗

e_bimi_mark_type_dn_trademark_country

✓

Trademark Registration ID must be present for Registered MarkMCR §7.1.4.2 ↗

e_bimi_mark_type_dn_trademark_registration_id

✓

Logotype extension must be presentMCR §7.1.2.7 ↗

e_bimi_logotype_present

✓

Logotype must contain data: URIMCR §7.1.2.7 ↗

e_bimi_logotype_data_uri

✓

SVG must be gzip-compressedMCR §7.1.2.7 ↗

e_bimi_svg_compressed

✓

SVG must conform to SVG Tiny PSMCR §7.1.2.7 ↗

e_bimi_svg_tiny_ps

✓

RSA key must be at least 2048 bitsMCR §6.1.5 ↗

w_bimi_rsa_key_size

—

ECDSA key must use P-256 or P-384MCR §6.1.5 ↗

w_bimi_ecdsa_curve

✓

Signature hash should be SHA-256 or strongerMCR §6.1.5 ↗

w_bimi_sig_hash

RFC 5280 (X.509)

✓

Certificate must not be a CARFC 5280 §4.2.1.9 ↗

e_bimi_basic_constraints

—

Key Usage extension must be criticalRFC 5280 §4.2.1.3 ↗

e_bimi_key_usage_critical

CA/Browser Forum

✓

Serial number should contain at least 64 bits of entropyCABF ↗

w_bimi_serial_entropy

✓

CA-specific policy OID should be presentCABF ↗

Found DigiCert policy OID: 2.16.840.1.114412.0.2.5

w_bimi_ca_policy_oid

RFC 3709 (Logotype)1 fail

✓

Logotype extension must not be criticalRFC 3709 §2.1 ↗

e_bimi_logotype_not_critical

✓

Logotype must contain a hashRFC 3709 §2.1 ↗

e_bimi_logotype_hash_present

✗

Logotype hash should use SHA-256noticeRFC 3709 §2.1 ↗

Logotype uses SHA-1 hash; SHA-256 recommended for stronger integrity

n_bimi_logotype_hash_sha256

Embedded Logo

SVG Hash31ffcc07

Revocation Status

No OCSP or CRL endpoints found in this certificate's extensions.

Certificate Details

Serial Number: 0f:31:26:20:97:7d:69:15:5d:fe:e3:15:99:19:57:58

Issuer:

commonName: DigiCert Verified Mark RSA4096 SHA256 2021 CA1

organizationName: DigiCert

Validity:

Not Before: Wed, 27 Aug 2025 00:00:00 UTC

Not After: Sun, 27 Sep 2026 23:59:59 UTC

Subject:

commonName: KDDI株式会社

organizationName: KDDI株式会社

countryName: JP

stateOrProvinceName: 東京都

localityName: 千代田区

BIMI Trademark Country: JP

BIMI Trademark ID: 4531743

BIMI Mark Type: Registered Mark

Jurisdiction Country: JP

Business Category: Private Organization

Serial Number: 0111-01-031552

Street Address: 飯田橋3丁目10番10号

Subject Alternative Names:

DNS:auone.jp· 7 certs

DNS:ezweb.ne.jp· 8 certs

DNS:kddi.com· 2 certs

DNS:au.com· 8 certs

X509v3 Extensions:

Subject Key Identifier(2.5.29.14):A2:F3:49:BF:33:63:1D:1E:E1:FD:C1:F5:90:3C:96:C2:D9:E6:39:57

Subject Alternative Name(2.5.29.17):auone.jp, ezweb.ne.jp, kddi.com, au.com

Basic Constraints(2.5.29.19):CA: false

CRL Distribution Points(2.5.29.31):http://crl3.digicert.com/DigiCertVerifiedMarkRSA4096SHA2562021CA1.crl http://crl4.digicert.com/DigiCertVerifiedMarkRSA4096SHA2562021CA1.crl

Certificate Policies(2.5.29.32):DigiCert VMC Policy http://www.digicert.com/CPS BIMI Mark Certificate General Policy

Authority Key Identifier(2.5.29.35):BE:9F:BD:8D:57:6D:95:B5:AD:63:C3:97:4E:AB:A8:84:5D:3A:07:F5

Extended Key Usage(2.5.29.37):Brand Indicator for Message Identification (BIMI)

Authority Information Access(1.3.6.1.5.5.7.1.1):CA Issuers: http://cacerts.digicert.com/DigiCertVerifiedMarkRSA4096SHA2562021CA1.crt

Logotype (BIMI)(1.3.6.1.5.5.7.1.12):Embedded SVG logotype (see Logo section)

CT Precert Poison(1.3.6.1.4.1.11129.2.4.3):Precertificate poison (critical)

ASN.1 Structure

Certificate Chain

Leaf CertificateKDDI株式会社

Position 0

Subject: 1.3.6.1.4.1.311.60.2.1.3=JP, 2.5.4.15=Private Organization, 2.5.4.5=0111-01-031552, C=JP, ST=東京都, L=千代田区, 2.5.4.9=飯田橋3丁目10番10号, O=KDDI株式会社, CN=KDDI株式会社, 1.3.6.1.4.1.53087.1.13=Registered Mark, 1.3.6.1.4.1.53087.1.3=JP, 1.3.6.1.4.1.53087.1.4=4531743

Issuer: C=US, O=DigiCert\, Inc., CN=DigiCert Verified Mark RSA4096 SHA256 2021 CA1

Serial: 0f:31:26:20:97:7d:69:15:5d:fe:e3:15:99:19:57:58

SHA-256: cd4f98e8a910263c...47fa2fc6

2025-08-27 – 2026-09-27

Intermediate CADigiCert, Inc.

Position 1

Subject: C=US, O=DigiCert\, Inc., CN=DigiCert Verified Mark RSA4096 SHA256 2021 CA1

Issuer: C=US, ST=Utah, L=Lehi, O=DigiCert\, Inc., OU=www.digicert.com, CN=DigiCert Verified Mark Root CA

Serial: 0c:5b:6f:7e:eb:b3:f1:c2:ac:dd:a1:3a:98:9d:bd:82

SHA-256: 0f2024a1f5ab051c...361b930a

2021-07-01 – 2036-06-30

Root CADigiCert, Inc.

Position 2

Subject: C=US, ST=Utah, L=Lehi, O=DigiCert\, Inc., OU=www.digicert.com, CN=DigiCert Verified Mark Root CA

Issuer: C=US, ST=Utah, L=Lehi, O=DigiCert\, Inc., OU=www.digicert.com, CN=DigiCert Verified Mark Root CA

Serial: 06:c1:67:cf:eb:f4:8d:35:d6:24:10:18:5e:11:c5:eb

SHA-256: 504386c9ee8932fe...33c46b42

2019-09-23 – 2049-09-23

Raw PEM