www.londonassetmanagement.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:3a:0e:34:44:67:f4:5e:20:46:32:c5:1f:a0:08:70:3a:ec 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.londonassetmanagement.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:3a:0e:34:44:67:f4:5e:20:46:32:c5:1f:a0:08:70:3a:ec
Serial Number (int): 281092115655512785375121688097785790872300
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b3:41:f1:5e:75:ce:ca:8f:47:f7:45:b2:2c:5c:2b:82:96:05:99:7c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 65:d3:d7:c2:76:83:13:c0:b2:75:d9:0d:ec:63:cc:8a:40:88:fa:15
Fingerprint (sha256): fb:42:ca:75:a7:25:e3:73:22:18:da:9f:7b:ba:1a:21:03:ae:be:b4:ce:8f:84:4d:c5:69:4b:cb:c5:08:11:0b

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.londonassetmanagement.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.londonassetmanagement.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.londonassetmanagement.com

Other certificates including the domain name londonassetmanagement.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.londonassetmanagement.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 281092115655512785375121688097785790872300
 . . . . . . . . [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 2019-12-08 08:37:11 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-07 08:37:11 +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.londonassetmanagement.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 646757464357986945219529520710384840838885597390834351210261649030128992730361996906083193101298581140334652564993735414970924971148790529734331219867230645072057969596522281820737852376145433297076867996971367614455215830158729232780022415091963447654613695848152204369041599628705507142354725827980904152989931925404000450253781977174604663297850956899606273311971644800851282137761721914618924251737757476592475241862274316991165801081584727868766473005239547803972944284669028471249004284181871194684549145930869617569776660416083546739195416394673826068606893335719020155806199432316880333803045151763948127067296851901782287501281385933693352878620637374895765638000837890724598555819838598822893806743877626782351406345793005335190902305174752408144773122769175416304658801226245643450176358158390750011249695227659630786516648497843340380706406965664490084944323610649142591708114366888720760683353870553407372239609070837707941627988859012414943111804543212457626911774605274304971404043121431843116227963226435248669972478768934664719658840182463582307935078854836975275824187750185746827159652452861304958649591901861908741544755238790449022859982859151363939887149256351797800007230308523304656341840452182630528988598821
 . . . . . . . . . . . . . . . . . . . . [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)
							b341f15e75ceca8f47f745b22c5c2b829605997c
 . . . . . . . . . . . . . . . . [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 (33 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.londonassetmanagement.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)
							00ef007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ee4deb7020000040300463044022079b92bdf16f47098804fa03407029d5746908140e0a014f9cd443c4b9f97a8d302207898ef9aeb1ecbf6d0248b02a2d635b2ebead2de748d1e9fd676c6ddb798eb3b0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016ee4deb7390000040300473045022100ea56b1630f1f737b32aa3e3be5920c1fcc4007dd167a8773abdc4d1f0428fa8f02203975f7831f57379013bee24167a2b45e36fb60ecfeef46c7e1178a83bd0c5a56
 . . . . [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)
		002e03ca0c216568beac5e8af04a3f777e1079f6d5150fa8aefd219499f6ee044bd2108f00ad03c775bc7262736217615cb3626381e1558e1cd1de42abe81d7dc5c08e0936db318d0b6250e1d9d8b2b7f757bfefe1bd16149f0b0c4d1182ca9d1f5619d01ebdc0cd23cbc28b44c22a4ad12c90d7c99d020ac23d64f0d9edff2b35d0e630c78376cb8b37f4a27da718a8f668f85c141891cc3de64e8a020ba227e07408a081682027311486d26363acc341edbe158a678916d1e746a54c771a8e2493ca0ac87d952b76aa50e3087315d9620b6f362f7e68e20b1a2b9db02a4c7a294da409fd10de867313ecbd93d5668b3e907afb77957fd1d6e95cd2fd7831b1e7