www.npuco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:74:bb:6d:6c:1d:64:29:5a:cf:3c:f9:8b:38:27:3a:6c:c6 was issued on by Let's Encrypt.

This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.npuco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:74:bb:6d:6c:1d:64:29:5a:cf:3c:f9:8b:38:27:3a:6c:c6
Serial Number (int): 301058746146507813669138338174750678478022
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bf:52:6f:4a:1b:00:5d:a4:3a:6b:55:46:04:16:e7:57:75:02:ec:86
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 25:44:cf:50:d6:74:c9:56:87:0b:69:fe:9f:c2:de:2d:bd:f1:19:41
Fingerprint (sha256): c2:06:a2:c4:3f:79:a2:f7:e8:cb:a4:a5:8c:d4:72:bf:8b:ee:c6:7f:fe:81:ec:b5:ee:11:c1:65:88:ed:49:c2

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.npuco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.npuco.com

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.npuco.com

Other certificates including the domain name npuco.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.npuco.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 301058746146507813669138338174750678478022
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-31 15:51:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-30 15:51:32 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.npuco.com'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 737871216152090452167653564115034447139412311329239919731634522626012953167068279701283199544783705569084212301712790594253222016458520150081026794955736174942867551879542900963606724553507640130625921583347863658856981356005939059252604966293745839698273612742735485704766360804101264375371090530188128258613282874985870202945095875196323639051366465336912358725346710230870249171421535666039473501788528273257573016191569711673506474212108544881861235169150493864126715824272032276363608727921361245320860809194864674346355127724878500648867207833296824980573083007550616793123148020050278693322482020329162304276851081973655703799518909074190450676554726648144781584624283620395815254018544014034040329799650607713066834041867185268228600214850529448390711324196290889855335708060092087686556946724479501524657965177844177022510476614451780522062772146191294381530662112545375917837854254588378454111428319018856959709328108447843758891569538337966912045381152480904313189109686964192145150130867445914084114436247914658151056089464198407593787346627586471926415054082631119390515264489286904690165233907785869145114916964870072733022885859149911094897059862049509341771575951328543030510219227345191089546643107871806153677539919
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							bf526f4a1b005da43a6b55460416e7577502ec86
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.npuco.com'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f5cdea2a40000040300473045022100a6c038229613c5fd2a845528e664009cac019a955c786a8a532757323040a49e0220301fa0d62bf35ec8338d1f05b46ed8bd6765d6a2151a56960ad3d3ad3acaff9b00750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f5cdea2cf000004030046304402201446e81b60141f0451700df3a5f2333271f8888b9d339552c0797915543028bc02207ec62b9193331c54ee52bce97e93db348b8688166480ca36eb33249be35ddb31
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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