Bandwidth Inc.

bandwidth.com · US · Issued by Sectigo Limited

Expires in 12 monthsVMCRegisteredView PrecertASN.1 crt.sh crt.sh Precert

Certificate Summary

Fingerprint (SHA-256)dab1ffbde68d7f54047822bfcd97a6cf82f2d3caf720b3a13ede9496e41ed422

Serial Number7d:f6:2e:1d:14:c0:09:26:9d:24:07:74:7d:33:40:bd

Issued2026-03-02

Expires2027-03-02

Intermediate CASectigo Limited

SubjectBandwidth Inc., US

SANsbandwidth.com · 3 certs

CT LogGorgon (DigiCert) #32778 · 2026-03-13 17:36 UTC (2 days ago)

Certificate Lint

1 error1 warning22 passed

1 error1 warning1 notice22 passed

MCR (Mark Certificate Requirements)1 fail

✓

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 presentMCR §7.1.2.7 ↗

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 MarkMCR §7.1.4.2 ↗

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 Forum1 fail

✓

Serial number should contain at least 64 bits of entropyCABF ↗

w_bimi_serial_entropy

✗

CA-specific policy OID should be presentwarningCABF ↗

No known CA-specific VMC policy OID found

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 Hash91b3ad491e1b70509342f26865bbc7f6ffe7a4d53de85a9de1645a53878a22c1

Revocation Status

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

Certificate Details

Serial Number: 7d:f6:2e:1d:14:c0:09:26:9d:24:07:74:7d:33:40:bd

Issuer:

commonName: Sectigo Limited VMC Issuing RSA CA 1

organizationName: Sectigo Limited

Validity:

Not Before: Mon, 02 Mar 2026 15:41:12 UTC

Not After: Tue, 02 Mar 2027 15:41:12 UTC

Subject:

organizationName: Bandwidth Inc.

countryName: US

stateOrProvinceName: North Carolina

localityName: Raleigh

BIMI Trademark Office: United States Patent and Trademark Office (USPTO)

BIMI Trademark Country: US

BIMI Trademark ID: 5018784

BIMI Mark Type: Registered Mark

Jurisdiction State: Delaware

Jurisdiction Country: US

Business Category: Private Organization

Serial Number: 3374902

Street Address: 2230 Bandmate Way

Subject Alternative Names:

DNS:bandwidth.com· 3 certs

X509v3 Extensions:

Subject Key Identifier(2.5.29.14):64:3B:4D:04:28:71:84:04:DC:24:D6:98:5C:51:26:8B:3C:8B:2B:20

Subject Alternative Name(2.5.29.17):bandwidth.com

Basic Constraints(2.5.29.19):CriticalCA: false

CRL Distribution Points(2.5.29.31):http://crls.ssl.com/Sectigo-VMC-I-R1.crl

Certificate Policies(2.5.29.32):1.3.6.1.4.1.38064.1.3.8 https://www.ssl.com/repository BIMI Mark Certificate General Policy

Authority Key Identifier(2.5.29.35):88:24:A8:65:B8:67:36:67:A9:CD:C4:EC:87:FD:E0:1E:75:14:5E:9A

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://cert.ssl.com/Sectigo-VMC-I-R1.cer

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

CT Precert SCTs(1.3.6.1.4.1.11129.2.4.2):Signed Certificate Timestamps (embedded)

ASN.1 Structure

Signed Certificate Timestamps

1 SCTSingle-log transparency

Log Name	Operator	SCT Timestamp	Lag
DigiCert 'Gorgon' log	DigiCert	2026-03-02	10m

Certificate Chain

Leaf CertificateBandwidth Inc.

Position 0

Subject: C=US, ST=North Carolina, L=Raleigh, O=Bandwidth Inc., 2.5.4.5=3374902, 1.3.6.1.4.1.53087.1.13=Registered Mark, 1.3.6.1.4.1.53087.1.3=US, 1.3.6.1.4.1.53087.1.2=United States Patent and Trademark Office (USPTO), 1.3.6.1.4.1.53087.1.4=5018784, 2.5.4.15=Private Organization, 2.5.4.9=2230 Bandmate Way, 1.3.6.1.4.1.311.60.2.1.2=Delaware, 1.3.6.1.4.1.311.60.2.1.3=US

Issuer: C=GB, O=Sectigo Limited, CN=Sectigo Limited VMC Issuing RSA CA 1

Serial: 7d:f6:2e:1d:14:c0:09:26:9d:24:07:74:7d:33:40:bd

SHA-256: dab1ffbde68d7f54...e41ed422

2026-03-02 – 2027-03-02

Intermediate CASectigo Limited

Position 1

Subject: C=GB, O=Sectigo Limited, CN=Sectigo Limited VMC Issuing RSA CA 1

Issuer: C=US, O=SSL Corporation, CN=SSL.com VMC RSA Root CA 2024

Serial: 66:47:87:75:32:86:9c:ad:5d:64:24:63:8d:9f:be:a1

SHA-256: 600ee4992bc587eb...681aa5e0

2025-11-13 – 2035-11-11

Root CASSL Corporation

Position 2

Subject: C=US, O=SSL Corporation, CN=SSL.com VMC RSA Root CA 2024

Issuer: C=US, O=SSL Corporation, CN=SSL.com VMC RSA Root CA 2024

Serial: 70:94:6f:ae:be:b3:cc:e0:d8:6f:b8:76:77:80:61:cb

SHA-256: 8f9d1b7698886782...154bd30d

2024-02-19 – 2048-02-13

Raw PEM