o2.lk

Issued by R3

About this certificate

This digital certificate with serial number 03:a6:f4:27:9b:f8:f1:7d:9c:67:77:27:d8:27:b4:df:74:ad 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=o2.lk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:a6:f4:27:9b:f8:f1:7d:9c:67:77:27:d8:27:b4:df:74:ad
Serial Number (int): 318148267998202337817296564414705504842925
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 18:42:3d:55:80:8a:62:93:f9:33:1e:a5:fd:cf:d6:42:1d:1a:4c:37
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 37:06:b1:6e:44:49:59:2d:b4:c4:10:6d:fc:40:3b:2e:bc:86:da:b2
Fingerprint (sha256): cd:ff:92:08:d4:ff:5a:f0:4e:11:8b:0f:a6:ee:2e:65:18:3c:0d:7d:b5:58:ca:5f:83:50:8f:93:b1:b1:e0:5c

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

Revocation information

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

Check the revocation status for certificate o2.lk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for o2.lk

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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

o2.lk

Other certificates including the domain name o2.lk

(limited to 100 certificates)
abc.3pm.app
o2.lk
www.o2.lk
o2.lk
o2.lk
www.o2.lk
referralportal.smeyegroup.com
app.o2.lk
o2.lk
demo.traceit.live
pay.o2.lk
www.o2.lk
www.o2.lk
connect.thrivexcel.com
o2.lk
ivf.curocura.com
www.o2.lk
hrm.senate.gov.so
www.o2.lk
o2.lk
o2.lk
o2.lk
pay.o2.lk
o2.lk
www.o2.lk
www.o2.lk
b2b.o2.lk
assistance.follosoft.com
o2.lk
www.o2.lk
www.o2.lk
o2.lk
support.cyrillcase.com
print.o2.lk
o2.lk
www.support.templogic.biz
o2.lk
www.o2.lk
o2.lk
helpdesk.verowave.com
o2.lk
www.o2.lk
o2.lk
pay.o2.lk
o2.lk
support.firstpagelife.com
pay.o2.lk
www.myzylkerportal.online
o2.lk
referralportal.smeyegroup.com
www.o2.lk
teamxhub.xtremesnowpros.com
o2.lk
www.o2.lk
o2.lk
o2.lk
o2.lk
o2.lk
www.o2.lk
www.myzylkerportal.online
pay.o2.lk
careers.avlc.llc
o2.lk
support.hsbintel.com
www.o2.lk
www.o2.lk
www.o2.lk
o2.lk
www.o2.lk
support.atklass.com
www.o2.lk
o2.lk
assistance.follosoft.com
pay.o2.lk
o2.lk
o2.lk
o2.lk
www.o2.lk
www.o2.lk

Certificate

The complete raw certificate details for o2.lk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEhcNhAIyNUaaoJ08/bTcl5Yy5QzOp
5ZLPdyX+r7lz4NmYur8cdi+jfcPI2YaBISKCJWSRZAPaOF1LWtgKvorpMA==
-----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 318148267998202337817296564414705504842925
 . . . . . . . . [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 2024-03-11 10:52:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-09 10:52:53 +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 'o2.lk'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				000485c361008c8d51a6a8274f3f6d3725e58cb94333a9e592cf7725feafb973e0d998babf1c762fa37dc3c8d986812122822564916403da385d4b5ad80abe8ae930
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							18423d55808a6293f9331ea5fdcfd6421d1a4c37
 . . . . . . . . . . . . . . . . [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 (9 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'o2.lk'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018e2d5bcd9200000403004630440220510d57cc7f847df7673da600228d017d368903f799b314e81bee9fbbddb084f202205a4fc42179a05c2176015f0c7a47c217136da58e2afec3cad0655331030c2730007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018e2d5bcd940000040300473045022100e3067bfd76300452b0fa421992189e030c5ca9f0bcfb8647202b3f13b83fc05302201fe295e8700192996963b444eb7289c28795f51bedea3a47add68e3caeb41093
 . . . . [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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