DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

mx1.dataflair.net · 45.141.116.130:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=mx1.dataflair.net
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-08-05T19:28:41+00:00
Expires
2026-11-03T19:28:40+00:00
Days remaining
32
Serial (hex)
052669417DAE8ACF028D89D02A2D1FB9684A
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.as207695.net, DNS:autoconfig.avoxia.net, DNS:autoconfig.boegel-elias.de, DNS:autoconfig.dataflair.de, DNS:autoconfig.dataflair.net, DNS:autoconfig.index-hosting.com, DNS:autoconfig.index-hosting.de, DNS:autoconfig.kurz-und-lankow.de, DNS:autoconfig.mario-kurz.de, DNS:autodiscover.as207695.net, DNS:autodiscover.avoxia.net, DNS:autodiscover.boegel-elias.de, DNS:autodiscover.dataflair.de, DNS:autodiscover.dataflair.net, DNS:autodiscover.index-hosting.com, DNS:autodiscover.index-hosting.de, DNS:autodiscover.kurz-und-lankow.de, DNS:autodiscover.mario-kurz.de, DNS:mx1.dataflair.net

SHA-256 fingerprint

5A:B4:4C:FC:A3:46:BB:15:7E:FA:60:97:3A:13:9F:03:D4:ED:82:F9:5F:08:5B:3F:63:4B:D1:59:49:A6:07:A5
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
AE:CC:00:83:9C:91:CE:E4:F5:A6:28:7C:6B:C6:CE:42:72:53:B2:F7
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:autoconfig.as207695.net, DNS:autoconfig.avoxia.net, DNS:autoconfig.boegel-elias.de, DNS:autoconfig.dataflair.de, DNS:autoconfig.dataflair.net, DNS:autoconfig.index-hosting.com, DNS:autoconfig.index-hosting.de, DNS:autoconfig.kurz-und-lankow.de, DNS:autoconfig.mario-kurz.de, DNS:autodiscover.as207695.net, DNS:autodiscover.avoxia.net, DNS:autodiscover.boegel-elias.de, DNS:autodiscover.dataflair.de, DNS:autodiscover.dataflair.net, DNS:autodiscover.index-hosting.com, DNS:autodiscover.index-hosting.de, DNS:autodiscover.kurz-und-lankow.de, DNS:autodiscover.mario-kurz.de, DNS:mx1.dataflair.net
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/75.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Aug 5 20:27:11.766 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:15:53:C0:24:17:57:16:DD:1E:52:67:DF: 93:FA:A3:0A:65:69:53:BA:FA:98:38:CF:DB:7C:02:BA: 7E:C4:E0:4C:02:21:00:F1:54:F3:69:A6:3A:C1:6E:11: 39:40:08:49:24:5B:0D:5D:80:C9:E9:2A:F2:98:B4:72: 27:3F:FC:50:6E:A0:F1 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A8:26:CB:E3:0A:C6:35:12:46:53:3F:E0:65:F1:4F:19: D9:6E:19:08:13:C4:1D:D9:6D:79:00:B3:12:3C:55:27 Timestamp : Aug 5 20:27:12.031 2026 GMT Extensions: 00:00:05:00:18:9D:14:DB Signature : ecdsa-with-SHA256 30:45:02:20:74:B2:67:CC:5C:39:E9:AE:A3:04:BC:9C: FD:83:EA:57:20:46:1E:28:32:25:8E:11:94:50:3A:0D: 8E:88:F4:55:02:21:00:A2:09:D5:41:54:73:A6:E3:48: 51:BF:66:D2:EB:13:0F:5E:BD:34:0A:F8:0A:28:5B:E1: 82:4B:0A:66:46:D2:8F
-----BEGIN CERTIFICATE-----
MIIH+jCCBuKgAwIBAgISBSZpQX2uis8CjYnQKi0fuWhKMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNZUjIwHhcNMjYwODA1MTkyODQxWhcNMjYxMTAzMTkyODQwWjAcMRowGAYDVQQD
ExFteDEuZGF0YWZsYWlyLm5ldDCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoC
ggIBAIUft7LmizUdn9veNeXxS4X94+H3+LLPZMLUlp3+1V9QFC59PY9/7Q/8YN7a
OChsyaaja3sgKNLODX4qTdj2C6kK99UL27wj/0PqCX9Y3m5pFT7RLeMcyvvB5EVU
f97xPF1QtwurouPZuwYKIeCHhlLvmM2+LwdgDZlJz1ZtFnERoYtll6MNOSbnP+HB
Jf51RPe5qmRP52/JC5qZALBelulv3DdDjaQgtxHEozYg5TSl+DszYXCk8OjrI+my
yJPeufCZChRgo3KKIz935fBRwMp4ryZlytw737WKjMd4b7qOGUOBq+P30TbFQ/7B
8hdZ7TOzLZYH/P4WFGwG+ErSEdr4Us3R/V4VE6/LMpnex95eBq5T6SK50qSwG3Sx
0VuuLyCpoI9UyJYS8dlmwFKqmTab0MW5hkkovLqBgh8QEvV2cs1azIXKDebSZ6fT
H9Xwpxh7HVi2AisqReNegwM5uc4f9KctJhwr4MqRdHiBb3WJBlLC7Odz34+w7Mt8
SCDVqUvE0GRd5eobHDXra356NvsvhwYmi8OIPF31BYa/NswSoDslO1PcS5f3cv2G
PoulSN68gR/g2ABhjNTyA7wIZrL9GIVBexKtwVjAcs+NMnUc+eZA/BoZCWoG90Z8
XBhCMZ9sI31fbUa91Sda53FuYKbkl2Ifbtx2Dbl7s4rEfnaJAgMBAAGjggQdMIIE
GTAOBgNVHQ8BAf8EBAMCBaAwEwYDVR0lBAwwCgYIKwYBBQUHAwEwDAYDVR0TAQH/
BAIwADAdBgNVHQ4EFgQUrswAg5yRzuT1pih8a8bOQnJTsvcwHwYDVR0jBBgwFoAU
QBUtJnntMiCe35pyHdYyH4EMgQwwMwYIKwYBBQUHAQEEJzAlMCMGCCsGAQUFBzAC
hhdodHRwOi8veXIyLmkubGVuY3Iub3JnLzCCAhgGA1UdEQSCAg8wggILghdhdXRv
Y29uZmlnLmFzMjA3Njk1Lm5ldIIVYXV0b2NvbmZpZy5hdm94aWEubmV0ghphdXRv
Y29uZmlnLmJvZWdlbC1lbGlhcy5kZYIXYXV0b2NvbmZpZy5kYXRhZmxhaXIuZGWC
GGF1dG9jb25maWcuZGF0YWZsYWlyLm5ldIIcYXV0b2NvbmZpZy5pbmRleC1ob3N0
aW5nLmNvbYIbYXV0b2NvbmZpZy5pbmRleC1ob3N0aW5nLmRlgh1hdXRvY29uZmln
Lmt1cnotdW5kLWxhbmtvdy5kZYIYYXV0b2NvbmZpZy5tYXJpby1rdXJ6LmRlghlh
dXRvZGlzY292ZXIuYXMyMDc2OTUubmV0ghdhdXRvZGlzY292ZXIuYXZveGlhLm5l
dIIcYXV0b2Rpc2NvdmVyLmJvZWdlbC1lbGlhcy5kZYIZYXV0b2Rpc2NvdmVyLmRh
dGFmbGFpci5kZYIaYXV0b2Rpc2NvdmVyLmRhdGFmbGFpci5uZXSCHmF1dG9kaXNj
b3Zlci5pbmRleC1ob3N0aW5nLmNvbYIdYXV0b2Rpc2NvdmVyLmluZGV4LWhvc3Rp
bmcuZGWCH2F1dG9kaXNjb3Zlci5rdXJ6LXVuZC1sYW5rb3cuZGWCGmF1dG9kaXNj
b3Zlci5tYXJpby1rdXJ6LmRlghFteDEuZGF0YWZsYWlyLm5ldDATBgNVHSAEDDAK
MAgGBmeBDAECATAuBgNVHR8EJzAlMCOgIaAfhh1odHRwOi8veXIyLmMubGVuY3Iu
b3JnLzc1LmNybDCCAQwGCisGAQQB1nkCBAIEgf0EgfoA+AB2AMIxfldFGaNF7n84
3rKQQevHwiFaIr9/1bWtdprZDlLNAAABn9Ob0BYAAAQDAEcwRQIgFVPAJBdXFt0e
Umffk/qjCmVpU7r6mDjP23wCun7E4EwCIQDxVPNppjrBbhE5QAhJJFsNXYDJ6Sry
mLRyJz/8UG6g8QB+AKgmy+MKxjUSRlM/4GXxTxnZbhkIE8Qd2W15ALMSPFUnAAAB
n9Ob0R8ACAAABQAYnRTbBAMARzBFAiB0smfMXDnprqMEvJz9g+pXIEYeKDIljhGU
UDoNjoj0VQIhAKIJ1UFUc6bjSFG/ZtLrEw9evTQK+AooW+GCSwpmRtKPMA0GCSqG
SIb3DQEBCwUAA4IBAQCagBfKXHZufSfBamPXIc2+e6bXGQ8W7p6DPZHOu9sBKFg7
Xa4RUN4ga+1ZBqJL2u4OsaG06RQTj3XZG3Nb9xOh4TgQQljhNUCEiGs3JonZ7N3t
5m6kQ5ZUbSFb4AM+Ml7c6c7LlLsYroYG+8GSvTVFG/VHCclYWThEa3NgCj0j1nQ2
vFg3Zb9FtAZ5d9yshQKkFqPWbin/NcBHg2lbOZv6cnVRJgOd7qXcaMdisMkF9lyy
PWbUwHXZ40kvJuE/ysQz3CiXNStiM0ksc406U90HZOyE2ZY9vVZ/Bma3tW2JVjhr
b/mwv63tRfTO8VEp78LkLiRDnDrbNkTm9BdRml12
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-02T02:54:37+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
701
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2162
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----
MIIF9DCCA9ygAwIBAgIRAPJLbRf52a18scn+p4eCaZ8wDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjYwNTEzMDAwMDAw
WhcNMzIwOTAyMjM1OTU5WjAuMQswCQYDVQQGEwJVUzENMAsGA1UEChMESVNSRzEQ
MA4GA1UEAxMHUm9vdCBZUjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIB
ANvGJnN78CTJdWL3+eGfsLN5TrNBJs+VH9hRXqRbwxu9sGNiB0BD1fcOxbSUQCJI
M1xE13Db+5Cw1w0s0EBYsvuIP/6joF0w8cuImbgR1OGgYbSQ4OpzI+DG8SGuTlcE
873OCS+kh3srlo6vl43M5OJg4Aeo1sfHp6kTJDoIiFBNJAY+OKfX/FUvYKuhjT+n
o49lmqmupSBI5PkBQiqrEGtWU5uxU/cQWHGu8jSjFBznZqvbNPLMXMLFxCb3WTfr
JBXXjqvWG+v4bjzxjjeAtOlU7qarRDvNOyAuQYLln904M+faKx8hnLCpJ15ZqaEg
cNlY+9MMWcC5yvL2A2j3l9+2buggZX+dOE91zYmIdawTvSZuVvlbRrAlLxIB6pwM
BjneXCjYQ8+3BCCjssbSNpZU3hTcBDdhfAlEDlYr6pEatnMdmDT5BqnKC92bd0Eh
M1fbLHioLccLCuievT8ZkPhZrq7Mii7gNXAcUEAR8+lzYal+9zTg7C5DALyVOeG/
CqfRAMn1KSHCR0NSA6P8tn/mGRlnCct5rtVCLnVySVpU6H1qGg3DgTOuskf8eahT
MiYbI5ezPJmO5ertalskQ1utp74+eDy92PI4ftHKTbq9IWhH4YZKh3WnJEIt+oQv
lYZbY8tpEroKrFB6PFGzrJIDRyts4HqvuH52RFj2zv/BAgMBAAGjgeswgegwDgYD
VR0PAQH/BAQDAgEGMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQFMAMB
Af8wHQYDVR0OBBYEFN7nW2DQIm1AKH0/DQH+pLVStFGUMB8GA1UdIwQYMBaAFHm0
WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcwAoYW
aHR0cDovL3gxLmkubGVuY3Iub3JnLzATBgNVHSAEDDAKMAgGBmeBDAECATAnBgNV
HR8EIDAeMBygGqAYhhZodHRwOi8veDEuYy5sZW5jci5vcmcvMA0GCSqGSIb3DQEB
CwUAA4ICAQA8spSI95KKfn2W6GMmDpHBJSPaLbsS3W93cijJCRCYAc1fsJgL1FIL
7C0C9ecPOdcwB2fi0Dk2p94j9iTJCxmt5CFSKLRWwnXT2MMSXexVxqoVB79BdWPx
VXETkVme/qYSAuKVHh5Ps+5BixgmwS1JkjSAc+MfrUbNssVEEnH0aEiAh+rotXAV
JSP/Ye7LJPEwD9DWG72vVWbhAcuOf5OLjz57Ctk7MgQHynZ7+PlHJtajroCaIbtC
r6tcZZaAwUQm+jQyeWdV+2hv9deOYFmKeQyjjcSrN5Nadrw+L9DZJLbA1HqeNvLh
BgqpP0fvJq2N6EtD574N6eMI7uMsJTnji2UDz9el5XLSv9fqJMuDQtYVb2oTNoKp
oUqhxPVC0aq4eG5MESaIdn8b5ZGSSeAJLMHXljEdlNza+ncfkviXk1POLnnFdvx8
/gk6M374WbLWFXw8N141B/Rl/tINGfl1TxOIiqtiMYkL02RSGb1kq34BL9NPP27z
RGMuHGnzS3hFIrRTfKxrzUZ9RzQWzEG3K6fJ3r2nqSltkeytis9DIBoFY9VmVyjL
M71DMi+y1+TRSJVClEMwvA4yL++7q9XZx5r5wBRWB4kQTKH5qyoZnDw7iiuh1lID
yDFx8r7i9vIJU5HS3moZLkYWAOilMaV9N56A9Bgb6dNcHkvg3NoaYA==
-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

Registration / WHOIS →DNS records →