www.iowaoptometry.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:d4:ab:b3:3c:6a:6d:3f:52:62:8c:50:05:cf:ff:1f:db:2f 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.iowaoptometry.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:d4:ab:b3:3c:6a:6d:3f:52:62:8c:50:05:cf:ff:1f:db:2f
Serial Number (int): 420817234148073411052204423409784909191983
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: f4:a4:fb:e5:29:dd:8a:fd:cf:40:50:31:c9:6b:bd:64:ac:3a:45:4b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): c0:ae:a4:fe:dd:f9:f4:e7:72:9a:a5:7b:e3:ca:ce:3f:43:3b:7d:6f
Fingerprint (sha256): 31:3e:e6:21:43:51:64:ae:aa:c6:72:41:bd:c7:67:8b:53:3b:3a:f9:92:c6:37:48:6f:0c:08:49:47:a1:c9:72

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.iowaoptometry.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.iowaoptometry.org

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.iowaoptometry.org

Other certificates including the domain name iowaoptometry.org

(limited to 100 certificates)
eyeknow.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
eyeknow.iowaoptometry.org

Certificate

The complete raw certificate details for www.iowaoptometry.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAn5SFUidxqr15yxpYz3pw
cfvIFlgTbvsXIO0kWcMEECmbgJl6BRa7FIGOKvxIEn9xBUK3AhhZgKvBbpO26IK9
btOFi0KV/M5BHpIPpfKDqtSI4Jafg58n7zD6hWzowuTBmO06FOFmafrAiaJTXg4B
/S0v7oq6+JJ8jwpN1EDIzNMKn8Beb/PNSP0AVZwyN6PljS0GELJFy0lRqTR1kRcL
hH2kyXdn7I/IvK3eQDLDJbBm7W9P4u48ylKRIKV7taCs4JCfv1DAUADk1Skm8Gec
ooW4/AFA0Xz0V44Jq7CNQIfg17JsVdKVerAGPq2ZksgkoDuvFiHNS8pb+154qULw
aQIDAQAB
-----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 420817234148073411052204423409784909191983
 . . . . . . . . [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 2017-06-06 15:54:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-09-04 15:54:00 +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.iowaoptometry.org'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 20145128818228814589161255280882452375205404699061073435550365715405003774447652123352769903482710846360583881851034913087523991162978700281342023905784874018663484094615749009888556642986025587156376122422666730822181151497061897340657675033145267227431273824347812442019152282005607434628192151774546878253298348745472567636262442557030051616456856558038685014966719501975506522785801085935192534307567785033420585622365792688234080919946772294063891143728715413318395273008762256983699497053385870092335136817971508434009647545878841573625199384796711950848982917398196472071048123809016741705365506614504387178601
 . . . . . . . . . . . . . . . . . . . . [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)
							f4a4fbe529dd8afdcf405031c96bbd64ac3a454b
 . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.iowaoptometry.org'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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)
		0052a844b4f01c5b3b37d48162836d732450bdab523055beb1c33c2d26c0389badb9aa4a1c693727dc7d2692a4e9a28852d67cf8e50525bf80cc9f9a018fda20f3581b907a1587dca37b9a002beacc3c46466ede009eb93f0f2cc7aff98cbfd9157248337b8284e44c3003acdf2f607c82dca896280522cf49aa009bb8b6632928a2e546e928c458e1d48f2b7c0c74aad92d9c683504eda3ed0bb5041d367aad873899b89423698a13db77b1d9657bdbc238235d6473e11090dcf6e883a32fdc3956bf5b67a17c4390ffd4404b62e393384f5ff26cfc2e8dd30beb763cdd8bc01065b635b674828e9997f721eb04a0f1e5dc6fde50dd4896201e966b13a86d769c