DNS tool that displays information about your domain.
- common records scanning (use -scan)
- validate DNSSEC chain (use -debug to see more info)
- change query speed for scanning (default 10 queries per second)
- diagnostic of your domain (similar to intodns.com, dnsspy.io)
- For implemented checks see #1
Feedback, issues and PR's are welcome.
Binaries can be found here
Go 1.17+ is required.
go install github.com/42wim/dt@master
You should now have dt binary in the bin directory:
$ ls ~/go/bin/
dt
Usage:
dt [FLAGS] domain
Example:
dt icann.org
dt -debug ripe.net
dt -debug -scan yourdomain.com
Flags:
-debug
enable debug
-json
output in JSON
-qps int
queries per seconds (per nameserver) (default 10)
-resolver string
use this resolver for initial domain lookup (default "8.8.8.8")
-scan
scan domain for common records
-showfail
only show checks that fail or warn
./dt ripe.net
NS |IP |LOC |ASN |ISP |rtt |Serial |DNSSEC |ValidFrom |ValidUntil
a3.verisigndns.com. |69.36.145.33 |US |ASN 36617 |AGTLD - VeriSign Global Registry Service |6.312503ms |1492613104 |valid |10 hours ago |4 weeks from now
|2001:502:cbe4::33 |US |ASN 36622 |IGTLD - VeriSign Global Registry Service |12.844157ms |1492613104 |valid |10 hours ago |4 weeks from now
a1.verisigndns.com. |209.112.113.33 |US |ASN 36617 |AGTLD - VeriSign Global Registry Service |8.993407ms |1492613104 |valid |10 hours ago |4 weeks from now
|2001:500:7967::2:33 |US |ASN 36622 |IGTLD - VeriSign Global Registry Service |12.03051ms |1492613104 |valid |10 hours ago |4 weeks from now
a2.verisigndns.com. |209.112.114.33 |US |ASN 36619 |CGTLD - VeriSign Global Registry Service |103.03539ms |1492613104 |valid |10 hours ago |4 weeks from now
|2620:74:19::33 |US |ASN 36619 |CGTLD - VeriSign Global Registry Service |104.154197ms |1492613104 |valid |10 hours ago |4 weeks from now
sns-pb.isc.org. |192.5.4.1 |US |ASN 3557 |ISC-AS - Internet Systems Consortium, In |5.563089ms |1492613104 |valid |10 hours ago |4 weeks from now
|2001:500:2e::1 |US |ASN 3557 |ISC-AS - Internet Systems Consortium, In |11.509454ms |1492613104 |valid |10 hours ago |4 weeks from now
sec3.apnic.net. |202.12.28.140 |AU |ASN 4777 |APNIC-NSPIXP2-AS Asia Pacific Network In |253.352975ms |1492613104 |valid |10 hours ago |4 weeks from now
|2001:dc0:1:0:4777::140 |AU |ASN 4777 |APNIC-NSPIXP2-AS Asia Pacific Network In |266.28428ms |1492613104 |valid |10 hours ago |4 weeks from now
manus.authdns.ripe.net. |193.0.9.7 |NL |ASN 197000 |RIPE-NCC-AUTHDNS-AS Reseaux IP Europeens |5.493287ms |1492613104 |valid |10 hours ago |4 weeks from now
|2001:67c:e0::7 |NL |ASN 197000 |RIPE-NCC-AUTHDNS-AS Reseaux IP Europeens |11.403502ms |1492613104 |valid |10 hours ago |4 weeks from now
tinnie.arin.net. |199.212.0.53 |US |ASN 393225 |ARIN-PFS-IAD - ARIN Operations, US |94.890834ms |1492613104 |valid |10 hours ago |4 weeks from now
|2001:500:13::c7d4:35 |US |ASN 53535 |ARIN-PFS-ANYCAST - ARIN Operations, US |96.854587ms |1492613104 |valid |10 hours ago |4 weeks from now
DNSSEC
OK: DNSKEY validated. Chain validated
NS
OK : NS of all nameservers are identical
OK : Multiple nameservers found
OK : Your nameservers are in different subnets.
OK : Nameservers are spread over multiple AS
OK : IPv4 and IPv6 nameservers found.
OK : All nameservers are authoritative.
OK : All nameservers report they are not allowing recursive queries.
OK : Your nameservers are also listed as NS at the parent nameservers
OK : Your parent nameservers are also listed as NS at your nameservers
OK : No CNAMEs found for your NS records
GLUE
WARN: no glue records found for [2001:500:2e::1 192.5.4.1] in NS of parent net.
WARN: no glue records found for [2620:74:19::33 2001:500:2e::1 199.212.0.53 2001:502:cbe4::33 2001:dc0:1:0:4777::140 209.112.113.33 69.36.145.33 202.12.28.140 2001:500:7967::2:33 $09.112.114.33 192.5.4.1 2001:500:13::c7d4:35] in NS of ripe.net.
SOA
OK : SOA of all nameservers are identical
WARN: Serial is not in the recommended format of YYYYMMDDnn.
OK : MNAME manus.authdns.ripe.net. is listed at the parent servers.
OK : Your nameservers have public / routable addresses.
MX
OK : MX of all nameservers are identical
OK : Multiple MX records found
OK : Your MX records have public / routable addresses.
OK : Your MX records resolve to different ips.
OK : No CNAMEs found for your MX records
OK : All MX records have reverse PTR records
Web
OK : Found a www record
OK : Found a root record
OK : Didn't find a CNAME for the root record
OK : Your www record has a public / routable address.
Spam
WARN: No DMARC records found. Along with DKIM and SPF, DMARC helps prevent spam from your domain.
WARN: No SPF records found. Along with DKIM and DMARC, SPF helps prevent spam from your domain.
./dt -debug ripe.net
DEBU[0000] validating ripe.net.
DEBU[0000] Asking NS (69.36.145.33) DNSKEY of ripe.net.
DEBU[0000] Trying validation RRSIG with DNSKEY AwEAAYXio3PIYXe4PqLmPGgemH52ZvUIDSdx+HkyoJW6SKuh82UFguzGh0xlbz5Dm5KenD2GG229/lSmU/+NvYeC+AFFB11dcoGr/5EZfb3kn+T+oaPbDyk6+tOcGJm8zHFVEP6lHi/hee5IbLQlngFpG5sf702/z5z/rQbm4OkuGPIz (flag 256, keytag 35431)
DEBU[0000] Validation failed
DEBU[0000] Trying validation RRSIG with DNSKEY AwEAAdYl56Gx3At/GI42bu2RmeQYWp3Y3WzjzYnM2h9c/twCjNa2bJPeIw2F9q+rOZhPugCn0+8X99XEmmJBvdBzaLTAZ3UsxXD1hKo1gwlpA0UUkJsUcgx51gqREEzEgUOLSB0oIwSopPpVOZRb9nfv2oNV1TvfXvAGmXLY+BnewBY5296Q/sEk8LhlkRAQuR1x25fjwxdyR+d2GC9+bjH+rXU54bOplRtTr7wCXMVV8CRkEaPRAuJpRNtUAX/IqpS3+A07BXPMHbvZAckmT1tuLNh4TG5auxxJ6a2ERj71FH7fbQODKuIWEL8oZgQB6Y3vevAUKAwjqjJsdGHt2oCpqn8= (flag 257, keytag 29740)
DEBU[0000] Validation succeeded
DEBU[0000] RRSIG validated (2017-04-29 11:02:59 +0200 CEST -> 2017-05-29 12:02:59 +0200 CEST)
DEBU[0000] Finding NS of parent: net.
DEBU[0000] Asking parent 192.43.172.30 (net.) DS of ripe.net.
DEBU[0000] parent DS digest: 570004384bf50cf787714ceb9e73de912d48cfc0e5c637785772d84bb50f85ae (keytag 29740)
DEBU[0000] child DS digest 570004384bf50cf787714ceb9e73de912d48cfc0e5c637785772d84bb50f85ae (keytag 29740)
DEBU[0000] ripe.net. validated
DEBU[0000] validating net.
DEBU[0000] Asking NS (192.26.92.30) DNSKEY of net.
DEBU[0000] Trying validation RRSIG with DNSKEY AQOYBnzqWXIEj6mlgXg4LWC0HP2n8eK8XqgHlmJ/69iuIHsa1TrHDG6TcOra/pyeGKwH0nKZhTmXSuUFGh9BCNiwVDuyyb6OBGy2Nte9Kr8NwWg4q+zhSoOf4D+gC9dEzg0yFdwT0DKEvmNPt0K4jbQDS4Yimb+uPKuF6yieWWrPYYCrv8C9KC8JMze2uT6NuWBfsl2fDUoV4l65qMww06D7n+p7RbdwWkAZ0fA63mXVXBZF6kpDtsYD7SUB9jhhfLQE/r85bvg3FaSs5Wi2BaqN06SzGWI1DHu7axthIOeHwg00zxlhTpoYCH0ldoQz+S65zWYi/fRJiyLSBb6JZOvn (flag 257, keytag 35886)
DEBU[0000] Validation succeeded
DEBU[0000] RRSIG validated (2017-04-20 18:33:57 +0200 CEST -> 2017-05-05 18:38:57 +0200 CEST)
DEBU[0000] Finding NS of parent: .
DEBU[0001] Asking parent 192.58.128.30 (.) DS of net.
DEBU[0001] parent DS digest: 7862b27f5f516ebe19680444d4ce5e762981931842c465f00236401d8bd973ee (keytag 35886)
DEBU[0001] child DS digest 7862b27f5f516ebe19680444d4ce5e762981931842c465f00236401d8bd973ee (keytag 35886)
DEBU[0001] net. validated
NS |IP |LOC |ASN |ISP |rtt |Serial |DNSSEC |ValidFrom |ValidUntil
manus.authdns.ripe.net. |193.0.9.7 |NL |ASN 197000 |RIPE-NCC-AUTHDNS-AS Reseaux IP Europeens |4.909712ms |1493390344 |valid |12 hours ago |4 weeks from now
|2001:67c:e0::7 |NL |ASN 197000 |RIPE-NCC-AUTHDNS-AS Reseaux IP Europeens |11.205698ms |1493390344 |valid |12 hours ago |4 weeks from now
sns-pb.isc.org. |192.5.4.1 |US |ASN 3557 |ISC-AS - Internet Systems Consortium, In |4.502391ms |1493390344 |valid |12 hours ago |4 weeks from now
|2001:500:2e::1 |US |ASN 3557 |ISC-AS - Internet Systems Consortium, In |11.525774ms |1493390344 |valid |12 hours ago |4 weeks from now
a3.verisigndns.com. |69.36.145.33 |US |ASN 36617 |AGTLD - VeriSign Global Registry Service |5.308344ms |1493390344 |valid |12 hours ago |4 weeks from now
|2001:502:cbe4::33 |US |ASN 36623 |HGTLD - VeriSign Global Registry Service |12.050853ms |1493390344 |valid |12 hours ago |4 weeks from now
a1.verisigndns.com. |209.112.113.33 |US |ASN 26134 |BROAD-RUN-BORDER-AS - VeriSign Infrastru |5.11017ms |1493390344 |valid |12 hours ago |4 weeks from now
|2001:500:7967::2:33 |US |ASN 36625 |KGTLD - VeriSign Global Registry Service |12.374661ms |1493390344 |valid |12 hours ago |4 weeks from now
a2.verisigndns.com. |209.112.114.33 |US |ASN 36619 |CGTLD - VeriSign Global Registry Service |10.563235ms |1493390344 |valid |12 hours ago |4 weeks from now
|2620:74:19::33 |US |ASN 36625 |KGTLD - VeriSign Global Registry Service |16.876504ms |1493390344 |valid |12 hours ago |4 weeks from now
tinnie.arin.net. |199.212.0.53 |US |ASN 393225 |ARIN-PFS-IAD - ARIN Operations, US |84.877944ms |1493390344 |valid |12 hours ago |4 weeks from now
|2001:500:13::c7d4:35 |US |ASN 53535 |ARIN-PFS-ANYCAST - ARIN Operations, US |83.173795ms |1493390344 |valid |12 hours ago |4 weeks from now
sec3.apnic.net. |202.12.28.140 |AU |ASN 4777 |APNIC-NSPIXP2-AS Asia Pacific Network In |257.939304ms |1493390344 |valid |12 hours ago |4 weeks from now
|2001:dc0:1:0:4777::140 |AU |ASN 4777 |APNIC-NSPIXP2-AS Asia Pacific Network In |258.446349ms |1493390344 |valid |12 hours ago |4 weeks from now
