www.iowaoptometry.org

Issued by R3

About this certificate

This digital certificate with serial number 04:c2:4f:52:b6:85:de:d2:9c:bb:12:ba:6e:93:60:5a:f8:64 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:c2:4f:52:b6:85:de:d2:9c:bb:12:ba:6e:93:60:5a:f8:64
Serial Number (int): 414569361391717310473958905828145440159844
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 24:be:2f:d3:8e:08:bc:2e:08:02:0c:52:0b:b1:87:e8:76:48:52:00
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 9e:97:eb:2f:d1:ea:74:15:07:9a:f8:9c:d0:f6:b4:9d:a7:dc:54:2a
Fingerprint (sha256): f5:d7:e3:1c:43:54:81:a5:33:ba:43:91:10:85:0e:dd:64:ee:04:64:3e:81:73:ed:2b:b8:8a:0f:72:34:58:fe

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.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

9 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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx+B/tqPj0MBiqi0nKL2n
q0cUFzJQc06xksfI69o/oz6tjuhlM9ui8HVIvaQEht6H5MMWjdwt3orkZdhwUqBu
reZHOu23q+CzAJ2+TUociJBgQUWH3wuyL41X9UMo6WTXk8k6RXLb7bMLTTEgs9e4
3y93gFZfBgOAs9TO/RfCY3M+NaKlEbLup/VUMY8vt8P5xgguSygLE+TLlTqVgi3w
9OJNi0/FwPFIZAX4FmzKckehedtVoOGmNc/DgNq6a/FSw/PJO2QNsGOV/tn/5f0+
EGe8HaJHcMcYGRZCcJ8AxbwGWBCH0/bH8WhZhiCr1H+BuDrlX6+oRSTFbHAWfqrr
nwIDAQAB
-----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 414569361391717310473958905828145440159844
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-07-15 04:04:58 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-13 04:04:57 +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 25232127212292619897178076042995654276595886004381075291620388339646837175017916521768952076257629929184127492443730784891532166344975367016374037574399574807399875442323580460261749634355847265104061197165080170779045946396024515082596964048458758735296731534497392949585935387242406953164105987721702185064005610746691645392164238591944704531443164906929901447193437064007204770066658648080312779816169759218968149781438540818772411517606470583786925035294740471320267651348593079097565120152353547984730207698583822040132416558017321034488615453552555332614935757729281391579060919954499574916495124337265421773727
 . . . . . . . . . . . . . . . . . . . . [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)
							24be2fd38e08bc2e08020c520bb187e876485200
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018957f013300000040300473045022049e2cd2b5a4f7fc58b8289bfe081b8b79052eb10be67f238e9a8ca5d839403b7022100bc9710e2f5062088f46ebc187d41a95c27b9f02a915dee36858d13eed23b6e040076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018957f0133e0000040300473045022100c4b0d17190fa9986068a2e3cdf665213f239d35ccedb05fd630c79028dcd19a902204581dd6814eb50a48d40b3dfd40b7b5b1ea3d3460303e3ddac6a61f73188e3dc
 . . . . [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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