DNS Report: isc.org

Generated: 2026-08-08T19:47:58-05:00

93/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/304 IPv4 address(es) detected.
OKIPv6 (AAAA)10/104 IPv6 address(es) detected.
OKName server redundancy20/205 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
OKDNSSEC chain15/15DS and DNSKEY detected.
OKCAA policy5/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/202 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
OKTLS-RPT5/5TLS reporting policy.
OKValid TLS certificate55/55121 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers23/356 of 9 evaluated headers detected.
ERRORPTR reverse DNS0/30PTR not detected.
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
OKIPv6 connectivity35/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/2 200
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
151.101.2.217
151.101.194.217
151.101.66.217
151.101.130.217
AAAA
2a04:4e42:400::729
2a04:4e42::729
2a04:4e42:200::729
2a04:4e42:600::729
CNAME
MX
10 mx.ams1.isc.org.
5 mx.pao1.isc.org.
TXT
"v=spf1 a mx ip4:149.20.0.0/20 ip6:2001:04F8::0/32 ip6:2001:500:60::65/128 ip4:199.6.1.0/24 ip6:2001:500:6b:2::0/64 " "include:shops.shopify.com include:servers.mcsv.net include:_spf.salesforce.com " "include:spf-a.customercenter.net include:spf-b.customercenter.net include:spf-c.customercenter.net ~all"
"_globalsign-domain-verification=ckxXdoIq27XGYE4ATbBYQOBeV7PTJWRxYe-PXDyzMX"
"MS=2583E0E0DCCBF33EC6DAFF0B4BFBAF78FFCF7AD0"
"F8C4EB9011"
"google-site-verification=wg4m8dWi3XVPRYmtBoy6xSKp3juhxIWa6UdxjZkNQCg"
"google-site-verification=grXE1SbXWNed6C5yQgI8fwxgucE0DppnbICbhZr9qG0"
"google-site-verification=6v652rgkk_kI6Ky32iGdxqXjQ4_BAd5DYKsrnRXKUiE"
NS
ns3.isc.org.
nsp.dnsnode.net.
ns.isc.afilias-nst.info.
ns1.isc.org.
ns2.isc.org.
SOA
ns-int.isc.org. hostmaster.isc.org. 2026080708 7200 3600 24796800 3600
CAA
0 issuewild "trust-provider.com"
0 issuewild "globalsign.com"
0 issue "globalsign.com"
0 issue "pki.goog"
0 issue "Digicert.com"
0 issuewild "comodoca.com"
0 issue "certainly.com"
0 issue "sectigo.com"
0 issuewild "sectigo.com"
0 iodef "mailto:hostmaster@isc.org"
0 issuewild "certainly.com"
0 issue "letsencrypt.org"
0 issuewild "usertrust.com"
0 issue "comodoca.com"
DS
7250 13 2 A30B3F78B6DDE9A4A9A2AD0C805518B4F49EC62E7D3F4531D33DE697 CDA01CB2
DNSKEY
257 3 13 zEoOfseNFDM+E8spu7RR2Ar/GzFqAehe4yapWLiv6McIUF6xmI5GcIQ3 +uLAizS2cNWHt6EArVj8ogjtrRXwfw==
256 3 13 1CS+VQcRn4lGTK+b3wDjVO0hFDx4DV7s3Q1Fwxuq9ahd255FRny4f4vd ZOMMMxpbRH5Zhwoh/706IV0v9JwjlA==
RRSIG
DNSKEY 13 2 3600 20260816041658 20260802034313 7250 isc.org. 8i8FlVvYwSUmJoR2P95BB6EAD1e3uhS9DT1o4rGys7u2+UwdnKnw6zHW ZMatPP3CU2KV3wB75QfDYS6Ia1+V6A==
MX 13 2 300 20260815184324 20260801175109 27566 isc.org. s8OH3edUfEqSAS4zKF5xXnb//b09b74ZrWvHKFaXCopJnDTvcUf//QGi eyRyjBe4ysQ0YadvN141s14pNIFAdA==
NS 13 2 7200 20260815184324 20260801175109 27566 isc.org. WptAd7svbknoDuoIfeyaVpWwWobY4RBMiED80nJNqf70vnXQl2Twr6my OM0xlAJBXnBzGed3tiq+Rku/uzt8PA==
A 13 2 300 20260815184324 20260801175109 27566 isc.org. +QCgbAqAx+TJo3VBNo9pOeR4PqOinr4NOzsvEyiOdqJU/xlxPdH5MopP 8g66Oz3nAa1SngNc1TYgFCPkRDtHog==
DS 8 2 3600 20260822152352 20260801142352 44925 org. TGOXbK9909H5oCGKpNpEivUkGoJIbe5FGQ3W/PfSqcl5sGE1b5KQ6Hwd FGv7q40iY82GJb+xE+xzNr0UHBG1ZvcpHFGvlogPYCme8+E5ceYVzftI +AvPdcV0+1MDSBxvRAllvZLIDBV4CEmSKybcBHkSR7c7wh6X+mw3fpVy NPU=
CAA 13 2 7200 20260815184324 20260801175109 27566 isc.org. Y7zFjoQRhI7MgZC0wPM+6Uws1fz4CzX3g5nS4cVEf527G4vhuj6utzOb dVS2I08gZWYBzzzNje8cLcyButddkA==
NSEC
_acme-challenge.isc.org. A NS SOA MX TXT AAAA NAPTR RRSIG NSEC DNSKEY CDS CDNSKEY CAA TYPE65534
NSEC3
SRV
NAPTR
20 0 "S" "SIP+D2U" "" _sip._udp.isc.org.
TLSA
SSHFP