stratechery.com

Checked 22 October 2026, 10:52 UTC · via 8.8.8.8
!Passed with warnings
26 passed 1 warning 0 failed 4 info

Registration

info

.com generic · Gandi SAS · expires 2034-11-20

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Gandi SAS
Registered
20 November 2012
Last changed
20 September 2026
Expires
20 November 2034
Status
client transfer prohibited
Registry nameservers
a.dns.gandi.net, b.dns.gandi.net, c.dns.gandi.net
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2034-11-20 #3
    The registration is valid until 2034-11-20 (2950 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

a.dns.gandi.net, b.dns.gandi.net, c.dns.gandi.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a.dns.gandi.net, b.dns.gandi.net, c.dns.gandi.net
NS in the zone
a.dns.gandi.net, b.dns.gandi.net, c.dns.gandi.net
NameserverAddressesNetwork (AS)Glue
a.dns.gandi.net173.246.98.1 2604:3400:abca::1AS209453 GANDI-LIVEDNS - GANDI SAS, FR AS209453 GANDI-LIVEDNS - GANDI SAS, FR-
b.dns.gandi.net213.167.229.1 2001:4b98:abcb::1AS209453 GANDI-LIVEDNS - GANDI SAS, FR AS209453 GANDI-LIVEDNS - GANDI SAS, FR-
c.dns.gandi.net217.70.179.1 2604:3400:abcc::1AS209453 GANDI-LIVEDNS - GANDI SAS, FR AS209453 GANDI-LIVEDNS - GANDI SAS, FR-

Checks

  • ✓ 3 nameservers #6
    Delegated to a.dns.gandi.net, b.dns.gandi.net, c.dns.gandi.net.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 3 IPv4 /24s and 3 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS209453 (GANDI-LIVEDNS - GANDI SAS, FR): 6 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .net
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.dns.gandi.net 173.246.98.1NOERROR, 19 ms, authoritativenoyes / yesrefused-
a.dns.gandi.net 2604:3400:abca::1NOERROR, 21 ms, authoritativenoyes / yesrefused-
b.dns.gandi.net 213.167.229.1NOERROR, 21 ms, authoritativenoyes / yesrefused-
b.dns.gandi.net 2001:4b98:abcb::1NOERROR, 21 ms, authoritativenoyes / yesrefused-
c.dns.gandi.net 217.70.179.1NOERROR, 19 ms, authoritativenoyes / yesrefused-
c.dns.gandi.net 2604:3400:abcc::1NOERROR, 21 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 1783463786 · primary a.dns.gandi.net

Found

Primary (MNAME)
a.dns.gandi.net
Contact (RNAME)
hostmaster.gandi.net
Serial
1783463786
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
a.dns.gandi.net (173.246.98.1)1783463786
a.dns.gandi.net (2604:3400:abca::1)1783463786
b.dns.gandi.net (213.167.229.1)1783463786
b.dns.gandi.net (2001:4b98:abcb::1)1783463786
c.dns.gandi.net (217.70.179.1)1783463786
c.dns.gandi.net (2604:3400:abcc::1)1783463786

Checks

  • ✓ Serial 1783463786 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 3h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a.dns.gandi.net is one of the listed nameservers.
  • ✓ Contact hostmaster@gandi.net #25
    The SOA RNAME hostmaster.gandi.net means hostmaster@gandi.net.
  • ✓ Timestamp serial #26
    The serial 1783463786 is a Unix timestamp (2026-07-07 22:36 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

13 records at the apex

Found

Read from
173.246.98.1:53
TypeValueTTL
SOAa.dns.gandi.net. hostmaster.gandi.net. 1783463786 10800 3600 604800 1080010800
NSb.dns.gandi.net.10800
NSc.dns.gandi.net.10800
NSa.dns.gandi.net.10800
A199.16.173.162600
A199.16.172.88600
MX0 stratechery-com.mail.protection.outlook.com.3600
TXT"stripe-verification=8f1de9897443a50a2b8a27e08241308aa1ca899f463e922facf44150fef21c30"10800
TXT"MS=ms22614218"10800
TXT"amazonses:nSEgo8cE0uWbcpQj5qJksUT1nDnlGZTFKAoOSwQ0jbg="10800
TXT"amazonses:V/HS+lnweDd9e/k4uAA6EhEv6E/yqSGBaDABKFpsGRo="10800
TXT"v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com include:amazonses.com include:wpdatacenter.com ~all"10800
TXT"google-site-verification=F3i63vVT0AKuC3NmLxElA7-UluQGznWmQu0xjQmZKTM"10800

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 1h, NS 3h. The NS TTL at the parent is 2d and in the zone 3h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35