lw.com

Checked 22 October 2026, 09:41 UTC · via 8.8.8.8
✗Problems found
24 passed 2 warnings 1 failed 4 info

Registration

info

.com generic · SafeNames Ltd. · expires 2033-05-26

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
SafeNames Ltd.
Registered
25 October 1994
Last changed
26 May 2023
Expires
26 May 2033
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
dana.lw.com, dbru.br.ns.els-gms.att.net, dmtu.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 2033-05-26 #3
    The registration is valid until 2033-05-26 (2407 days).
  • ✓ Transfer locked #4
    Registry status: client delete 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

dana.lw.com, dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dana.lw.com, dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net
NS in the zone
dana.lw.com, dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net
NameserverAddressesNetwork (AS)Glue
dana.lw.com136.179.7.132AS23005 SWITCH-LTD - SWITCH, LTD, US136.179.7.132
dbru.br.ns.els-gms.att.net68.94.156.134 2001:1890:1ff:9f0:68:94:156:134AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US-
dmtu.mt.ns.els-gms.att.net99.99.99.134 2001:1890:1ff:9f1:99:99:99:134AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US-

Checks

  • ✓ 3 nameservers #6
    Delegated to dana.lw.com, dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net.
  • ✓ 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: dana.lw.com.
  • ✓ 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
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS23005 (SWITCH-LTD - SWITCH, LTD, US): 1 address; AS7018 (ATT-INTERNET4 - AT&T Enterprises, LLC, US): 4 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: dana.lw.com.
    #13

Nameservers

fail

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dana.lw.com 136.179.7.132NOERROR, 147 ms, authoritativenoyes / yesrefused-
dbru.br.ns.els-gms.att.net 68.94.156.134NOERROR, 145 ms, authoritativenoyes / yesrefused-
dbru.br.ns.els-gms.att.net 2001:1890:1ff:9f0:68:94:156:134NOERROR, 124 ms, authoritativenono / yesrefused-
dmtu.mt.ns.els-gms.att.net 99.99.99.134NOERROR, 131 ms, authoritativenoyes / yesrefused-
dmtu.mt.ns.els-gms.att.net 2001:1890:1ff:9f1:99:99:99:134NOERROR, 108 ms, authoritativenono / yesrefused-

Checks

  • ✓ All respond #14
    All 5 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: dbru.br.ns.els-gms.att.net (2001:1890:1ff:9f0:68:94:156:134): read tcp [2a01:4f8:1c1c:eebf::1]:41294->[2001:1890:1ff:9f0:68:94:156:134]:53: read: connection reset by peer; dmtu.mt.ns.els-gms.att.net (2001:1890:1ff:9f1:99:99:99:134): read tcp [2a01:4f8:1c1c:eebf::1]:48980->[2001:1890:1ff:9f1:99:99:99:134]: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 2004034074 · primary dana.lw.com

Found

Primary (MNAME)
dana.lw.com
Contact (RNAME)
postmaster.lw.com
Serial
2004034074
Refresh / retry
1800 s / 300 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
dana.lw.com (136.179.7.132)2004034074
dbru.br.ns.els-gms.att.net (68.94.156.134)2004034074
dbru.br.ns.els-gms.att.net (2001:1890:1ff:9f0:68:94:156:134)2004034074
dmtu.mt.ns.els-gms.att.net (99.99.99.134)2004034074
dmtu.mt.ns.els-gms.att.net (2001:1890:1ff:9f1:99:99:99:134)2004034074

Checks

  • ✓ Serial 2004034074 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 30m, retry 5m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dana.lw.com is one of the listed nameservers.
  • ✓ Contact postmaster@lw.com #25
    The SOA RNAME postmaster.lw.com means postmaster@lw.com.
  • ✓ Timestamp serial #26
    The serial 2004034074 is a Unix timestamp (2033-07-03 20:07 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

warn

36 records at the apex

Found

Read from
136.179.7.132:53
TypeValueTTL
SOAdana.lw.com. postmaster.lw.com. 2004034074 1800 300 1209600 8640086400
NSdana.lw.com.86400
NSdbru.br.ns.els-gms.att.net.86400
NSdmtu.mt.ns.els-gms.att.net.86400
A136.179.7.15660
MX5 mx4.lw.com.86400
MX5 mx1.lw.com.86400
MX5 mx3.lw.com.86400
MX5 mx2.lw.com.86400
TXT"box-domain-verification=df317b32f400e630ac7dec3b211cc184e9da5b840c2b6c0e95029b7d128972d1"86400
TXT"launchdarkly-domain-verification=6a7afc4a-e6ce-4c04-bceb-46e1a710bcda"86400
TXT"jetbrains-domain-verification=5y6w3c8qsaxd6wwh2r349fwtz"86400
TXT"shade-domain-verification-k7tj85=UzmaBPezZGegs3a4QWVGKH5Uv"900
TXT"_jw98g6fjrydq6qe921p5df7iy4z6hrc"86400
TXT"perplexity-ai-domain-verification-c07vp3=rzxdTegBdIMmvCJ1EdoHSF3WP"86400
TXT"_gselx81skikoy7suzd59d3tsf6maeho"3600
TXT"_2b74p1n068pejm03r7ziznc20n5v3pm"3600
TXT"docker-verification=7e4b8972-e926-4ad6-9fd5-6b70072a2fd0"86400
TXT"docusign=536a9640-6555-4bd2-9656-27bcb30b823f"86400
TXT"vmware-cloud-verification-c0350bef-6c3c-40db-8da6-712388c0b766"86400
TXT"airtable-verification=bccf8e2dd7227bce21b812b26a48ad33"86400
TXT"_b7mfy7nwobgjmj7748nyeudbncsifg4"3600
TXT"gdfm4lzhz7nh4ypkvycnbyrfqjr8sbkk"86400
TXT"atlassian-domain-verification=xazBn2nTf9eCYVaKcdD4Ao/6HHhw7P3ncButBSoUEVAFEq/GaIFu7plw6hhY5eGo"3600
TXT"0741e919-b495-43e6-9aab-1429256f4988"86400
TXT"openai-domain-verification=dv-aAfsjsWBp6QRRhF3lP8pULOr"3600
TXT"docusign=847456f8-9c1c-48ed-9b1a-59eacea32f41"86400
TXT"_bk6x8uosfxvxi8607k72ord6ttsdxa1"3600
TXT"MS=ms23099369"86400
TXT"autodesk-domain-verification=-vnKfVfCI_AWKJGvytzB"86400
TXT"5D48A3B9055D1324F99121FD04A4F53C3E107583AB8DE87B29F0F318A6AEB957"86400
TXT"opjonoas2oqsooge9mieek38d2"86400
TXT"msfpkey=370rdrkyehmdy9fsclcf0zew0"86400
TXT"v=spf1 mx a ip4:136.179.7.175 ip4:136.179.7.176 ip4:136.179.7.177 ip4:136.179.7.178 -all"86400
TXT"monday-com-verification=GzuS8haskwenfzOGp98UGxXuVgaG_u8PSkwc-FGe7J8"86400
TXT"onetrust-domain-verification=ec15d8cdbfef41fb8b14bc079a334807"86400

Checks

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