wolfram.com

Checked 22 October 2026, 11:32 UTC · via 8.8.8.8
!Passed with warnings
19 passed 5 warnings 0 failed 7 info

Registration

info

.com generic · GoDaddy Corporate Domains, LLC · expires 2027-02-01

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy Corporate Domains, LLC
Registered
31 January 1996
Last changed
9 January 2026
Expires
1 February 2027
Status
client transfer prohibited
Registry nameservers
wri-dns2.wolfram.com, wri-dns3.wolfram.com
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 2027-02-01 #3
    The registration is valid until 2027-02-01 (101 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

warn

wri-dns2.wolfram.com, wri-dns3.wolfram.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
wri-dns2.wolfram.com, wri-dns3.wolfram.com
NS in the zone
wri-dns2.wolfram.com, wri-dns3.wolfram.com
NameserverAddressesNetwork (AS)Glue
wri-dns2.wolfram.com140.177.10.23AS11106 WOLFRAM-AS - Wolfram Research, Inc., US140.177.10.23
wri-dns3.wolfram.com140.177.10.19AS11106 WOLFRAM-AS - Wolfram Research, Inc., US140.177.10.19

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: wri-dns2.wolfram.com, wri-dns3.wolfram.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: wri-dns2.wolfram.com, wri-dns3.wolfram.com.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • !
    Nameservers in one network
    all IPv4 addresses are in 140.177.10.0/24. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS11106 (WOLFRAM-AS - Wolfram Research, Inc., US): 2 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 .com
    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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
wri-dns2.wolfram.com 140.177.10.23NOERROR, 109 ms, authoritativenoyes / yesrefusedNot a chance
wri-dns3.wolfram.com 140.177.10.19NOERROR, 108 ms, authoritativenoyes / yesrefusedNot a chance

Checks

  • ✓ All respond #14
    All 2 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: wri-dns2.wolfram.com: "Not a chance"; wri-dns3.wolfram.com: "Not a chance".
    #17
  • ✓ 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

warn

serial 4660 · primary dns-master.wolfram.com

Found

Primary (MNAME)
dns-master.wolfram.com
Contact (RNAME)
postmaster.wolfram.com
Serial
4660
Refresh / retry
1800 s / 600 s
Expire
604800 s
Negative TTL
60 s

Serial per nameserver

NameserverSerial
wri-dns2.wolfram.com (140.177.10.23)4660
wri-dns3.wolfram.com (140.177.10.19)4660

Checks

  • ✓ Serial 4660 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 30m, retry 10m, expire 7d, negative TTL 1m.
    #23
  • i
    Hidden master
    The primary nameserver dns-master.wolfram.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact postmaster@wolfram.com #25
    The SOA RNAME postmaster.wolfram.com means postmaster@wolfram.com.
  • ✓ Counter serial #26
    The serial 4660 is a plain counter.

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

warn

28 records at the apex

Found

Read from
140.177.10.23:53
TypeValueTTL
SOAdns-master.wolfram.com. postmaster.wolfram.com. 4660 1800 600 604800 6060
NSwri-dns2.wolfram.com.60
NSwri-dns3.wolfram.com.60
A140.177.52.200300
MX10 mx2.wolfram.com.60
MX10 mx1.wolfram.com.60
TXT"intacct-esk=3A6152FA67053AACE063A0068D0ABF3E"60
TXT"pdjho94nos612faog72srea1do"60
TXT"MS=ms86614707"60
TXT"openai-domain-verification=dv-9Kug4a4Wa4zwQFlKmeGxmoia"60
TXT"google-site-verification=QsodIjYzVHBaAxtz7L-UTBcsuenCeXNR9VQDyDpbVaI"60
TXT"v=spf1 mx ip4:140.177.61.16 ip4:140.177.61.19 ip4:140.177.7.254 ip4:140.177.33.36 a:relay.wolfram.com a:mailhub.wolfram.com include:wolfram-spf.wolfram.com -all"60
TXT"45k0c05l66j8mk8iugpmjnhir4"60
TXT"irmkrgl6t8llevlp7gl21corj8"60
TXT"openai-domain-verification=dv-P3YSGUZzYjwjDWeYiLjzIwDu"60
TXT"vc67j8dic9scb8oduuuggne6nu"60
TXT"google-site-verification=C1Qi0cru883KPeQWCL2Ly8s1Ifo5Cn3hfmHJXn1nKjA"60
TXT"corhr3k8q5o3boobmn4dvq407m"60
TXT"v=MCPv1; k=ed25519; p=Dwjy7U2abPodrxEw8VOCqsqIx4rwSXZqS3Q7iJ6zbto="60
TXT"9n6v77fpmisff3dph66i1n7enn"60
TXT"m6c65cpj6pcttu216aaji4njnb"60
TXT"copnt1dnlem1kf5lf2pull7svq"60
TXT"cloudflare_dashboard_sso=8ae039e5dcb6ff07243186d3a4f5cd8c"60
TXT"bw=tlzE3ecw1e51dBq5o1LIaELu9XBKJSRXjYXTIMgXZHNB"60
TXT"openai-domain-verification=dv-1yfVb2e5ZzWP8KbAYvi5X9Tt"60
TXT"ofi5p3es84luj5062udeca4589"60
TXT"google-site-verification=WsVv7drO4YZc6mZtbtSAN_EH_aQlIGBflL1iqFTJC2c"60
TXT"dv-P3YSGUZzYjwjDWeYiLjzIwDu"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: MX (1m), NS (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1m; resolvers may use either.
    #32
  • ✓ 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