summitracing.com

Checked 22 October 2026, 10:52 UTC · via 8.8.8.8
✗Problems found
23 passed 1 warning 1 failed 6 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2027-05-15

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
27 December 1995
Last changed
16 May 2026
Expires
15 May 2027
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.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 2027-05-15 #3
    The registration is valid until 2027-05-15 (205 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net
NS in the zone
cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net
NameserverAddressesNetwork (AS)Glue
cbru.br.ns.els-gms.att.net68.94.156.132 2001:1890:1ff:9f0:68:94:156:132AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US-
cmtu.mt.ns.els-gms.att.net99.99.99.132 2001:1890:1ff:9f1:99:99:99:132AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net.
    #6
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:1890:1ff::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS7018 (ATT-INTERNET4 - AT&T Enterprises, LLC, US): 4 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

fail

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
cbru.br.ns.els-gms.att.net 68.94.156.132NOERROR, 130 ms, authoritativenoyes / yesrefused-
cbru.br.ns.els-gms.att.net 2001:1890:1ff:9f0:68:94:156:132NOERROR, 117 ms, authoritativenono / yesrefused-
cmtu.mt.ns.els-gms.att.net 99.99.99.132NOERROR, 134 ms, authoritativenoyes / yesrefused-
cmtu.mt.ns.els-gms.att.net 2001:1890:1ff:9f1:99:99:99:132NOERROR, 114 ms, authoritativenono / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: cbru.br.ns.els-gms.att.net (2001:1890:1ff:9f0:68:94:156:132): read tcp [2a01:4f8:1c1c:eebf::1]:43826->[2001:1890:1ff:9f0:68:94:156:132]:53: read: connection reset by peer; cmtu.mt.ns.els-gms.att.net (2001:1890:1ff:9f1:99:99:99:132): read tcp [2a01:4f8:1c1c:eebf::1]:40288->[2001:1890:1ff:9f1:99:99:99:132]:53: read: connection reset by peer.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 252 · primary cbru.br.ns.els-gms.att.net

Found

Primary (MNAME)
cbru.br.ns.els-gms.att.net
Contact (RNAME)
rm-hostmaster.ems.att.com
Serial
252
Refresh / retry
86400 s / 10000 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
cbru.br.ns.els-gms.att.net (68.94.156.132)252
cbru.br.ns.els-gms.att.net (2001:1890:1ff:9f0:68:94:156:132)252
cmtu.mt.ns.els-gms.att.net (99.99.99.132)252
cmtu.mt.ns.els-gms.att.net (2001:1890:1ff:9f1:99:99:99:132)252

Checks

  • ✓ Serial 252 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h46m40s, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver cbru.br.ns.els-gms.att.net is one of the listed nameservers.
  • ✓ Contact rm-hostmaster@ems.att.com #25
    The SOA RNAME rm-hostmaster.ems.att.com means rm-hostmaster@ems.att.com.
  • ✓ Counter serial #26
    The serial 252 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

info

25 records at the apex

Found

Read from
68.94.156.132:53
TypeValueTTL
SOAcbru.br.ns.els-gms.att.net. rm-hostmaster.ems.att.com. 252 86400 10000 604800 8640086400
NScbru.br.ns.els-gms.att.net.86400
NScmtu.mt.ns.els-gms.att.net.86400
A45.60.241.79600
A45.60.251.79600
MX10 us-smtp-inbound-1.mimecast.com.600
MX20 us-smtp-inbound-2.mimecast.com.600
TXT"q598rtlb32rmd0cln5bk478cbpt13z9q"86400
TXT"t7z9mgkt6fl901ygf7bzjjzy1919315h"86400
TXT"docusign=55f32e3c-df87-430b-95f3-dff013d27e5d"86400
TXT"v=spf1 mx ip4:12.176.129.247 ip4:12.176.129.246 include:us._netblocks.mimecast.com include:usb._netblocks.mimecast.com include:spf.protection.outlook.com -all"86400
TXT"d365mktkey=WqkyvYqmCD1dXKUxoT9tghMhnMX8zUtqBhZy9PUxD4Ax"86400
TXT"d365mktkey=QIbLmE4QKnCQcxzAWVHAGHefW8VxcbZRE6GI2bvfwbYx"86400
TXT"docusign=9af16e76-2771-4fe1-87e3-69d584825c70"86400
TXT"jamf-site-verification=v0QRdSD4xe94wHN_LMcLKQ"86400
TXT"msfpkey=26l3883ul52wkye98ttkdh5j2"86400
TXT"_nalnb4pw9wkpi6c7kbr7bj4z1ttjgng"86400
TXT"globalsign-domain-verification=59AF08E1ADB25EFF63056A03ED11ABD0"86400
TXT"google-site-verification=9ZsdONNwaiLXS_RjdoCLeuNX3TY7ROdpPOTWQb6FOpI"86400
TXT"adobe-idp-site-verification=3ef8ea38a4ce25921e14e48a18e9efa0604cdd8ff848474cb631814c9cfa5145"86400
TXT"MS=AF1EA27FE3577C5AFED82CB339747DF66373BCBE"86400
TXT"4tx1phft0s166hhmbw7lmwvs84mk4kg7"86400
TXT"saXQxyfpbHJT2afaY7QRiJ22P1ha9cO5Gm8kCCn9a93TEutVUZK7Yfm3KoXkjRZqhRTe0BJ0qMMXCuSYrUUyUw=="86400
TXT"globalsign-domain-verification=F8CEF61CE23D97304B14EBAECAF48B60"86400
TXT"apple-domain-verification=X6wCgndm6zkvWhkh"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 10m, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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