silabs.com

Checked 22 October 2026, 10:42 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 6 info

Registration

info

.com generic · SafeNames Ltd. · expires 2032-09-24

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
SafeNames Ltd.
Registered
25 September 1996
Last changed
20 August 2026
Expires
24 September 2032
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns10.silabs.com, ns11.silabs.com, ns12.silabs.com, ns13.silabs.com, ns14.silabs.com, ns15.silabs.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 2032-09-24 #3
    The registration is valid until 2032-09-24 (2163 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

warn

ns10.silabs.com, ns11.silabs.com, ns12.silabs.com, ns13.silabs.com, ns14.silabs.com, ns15.silabs.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns10.silabs.com, ns11.silabs.com, ns12.silabs.com, ns13.silabs.com, ns14.silabs.com, ns15.silabs.com
NS in the zone
ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com, ns12.dnsmadeeasy.com, ns13.dnsmadeeasy.com, ns14.dnsmadeeasy.com, ns15.dnsmadeeasy.com
NameserverAddressesNetwork (AS)Glue
ns10.dnsmadeeasy.com (zone only)208.94.148.4 2600:1800:10::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns10.silabs.com (parent only)208.94.148.4AS16552 DIGICERT - Tiggee LLC, US208.94.148.4
ns11.dnsmadeeasy.com (zone only)208.80.124.4 2600:1801:11::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns11.silabs.com (parent only)208.80.124.4AS16552 DIGICERT - Tiggee LLC, US208.80.124.4
ns12.dnsmadeeasy.com (zone only)208.80.126.4 2600:1802:12::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns12.silabs.com (parent only)208.80.126.4AS16552 DIGICERT - Tiggee LLC, US208.80.126.4
ns13.dnsmadeeasy.com (zone only)208.80.125.4 2600:1801:13::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns13.silabs.com (parent only)208.80.125.4AS16552 DIGICERT - Tiggee LLC, US208.80.125.4
ns14.dnsmadeeasy.com (zone only)208.80.127.4 2600:1802:14::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns14.silabs.com (parent only)208.80.127.4AS16552 DIGICERT - Tiggee LLC, US208.80.127.4
ns15.dnsmadeeasy.com (zone only)208.94.149.4 2600:1800:15::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns15.silabs.com (parent only)208.94.149.4AS16552 DIGICERT - Tiggee LLC, US208.94.149.4

Checks

  • ✓ 6 nameservers #6
    Delegated to ns10.silabs.com, ns11.silabs.com, ns12.silabs.com, ns13.silabs.com, ns14.silabs.com, ns15.silabs.com.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns10.silabs.com, ns11.silabs.com, ns12.silabs.com, ns13.silabs.com, ns14.silabs.com, ns15.silabs.com; only in the zone: ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com, ns12.dnsmadeeasy.com, ns13.dnsmadeeasy.com, ns14.dnsmadeeasy.com, ns15.dnsmadeeasy.com. ns10.dnsmadeeasy.com, ns10.silabs.com, ns11.dnsmadeeasy.com, ns11.silabs.com, ns12.dnsmadeeasy.com, ns12.silabs.com, ns13.dnsmadeeasy.com, ns13.silabs.com, ns14.dnsmadeeasy.com, ns14.silabs.com, ns15.dnsmadeeasy.com, ns15.silabs.com report NS ns10.dnsmadeeasy.com ns11.dnsmadeeasy.com ns12.dnsmadeeasy.com ns13.dnsmadeeasy.com ns14.dnsmadeeasy.com ns15.dnsmadeeasy.com.
    #7
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns10.silabs.com, ns11.silabs.com, ns12.silabs.com, ns13.silabs.com, ns14.silabs.com, ns15.silabs.com.
  • ✓ 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 6 IPv4 /24s and 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16552 (DIGICERT - Tiggee LLC, US): 18 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns10.silabs.com, ns11.silabs.com, ns12.silabs.com, ns13.silabs.com, ns14.silabs.com, ns15.silabs.com.
    #13

Nameservers

info

18 of 18 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns10.dnsmadeeasy.com 208.94.148.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns10.dnsmadeeasy.com 2600:1800:10::1NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns10.silabs.com 208.94.148.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns11.dnsmadeeasy.com 208.80.124.4NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns11.dnsmadeeasy.com 2600:1801:11::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns11.silabs.com 208.80.124.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns12.dnsmadeeasy.com 208.80.126.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns12.dnsmadeeasy.com 2600:1802:12::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns12.silabs.com 208.80.126.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns13.dnsmadeeasy.com 208.80.125.4NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns13.dnsmadeeasy.com 2600:1801:13::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns13.silabs.com 208.80.125.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns14.dnsmadeeasy.com 208.80.127.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns14.dnsmadeeasy.com 2600:1802:14::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns14.silabs.com 208.80.127.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns15.dnsmadeeasy.com 208.94.149.4NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns15.dnsmadeeasy.com 2600:1800:15::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns15.silabs.com 208.94.149.4NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast

Checks

  • ✓ All respond #14
    All 18 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: ns10.dnsmadeeasy.com: "DNS Made Easy Anycast"; ns10.silabs.com: "DNS Made Easy Anycast"; ns11.dnsmadeeasy.com: "DNS Made Easy Anycast"; ns11.silabs.com: "DNS Made Easy Anycast"; ns12.dnsmadeeasy.com: "DNS Made Easy Anycast"; ns12.silabs.com: "DNS Made Easy Anycast"; ns13.dnsmadeeasy.com: "DNS Made Easy Anycast"; ns13.silabs.com: "DNS Made Easy Anycast"; ns14.dnsmadeeasy.com: "DNS Made Easy Anycast"; ns14.silabs.com: "DNS Made Easy Anycast"; ns15.dnsmadeeasy.com: "DNS Made Easy Anycast"; ns15.silabs.com: "DNS Made Easy Anycast".
    #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 2009059221 · primary ns20.digicertdns.com

Found

Primary (MNAME)
ns20.digicertdns.com
Contact (RNAME)
dns.digicertdns.com
Serial
2009059221
Refresh / retry
43200 s / 3600 s
Expire
1209600 s
Negative TTL
180 s

Serial per nameserver

NameserverSerial
ns10.dnsmadeeasy.com (208.94.148.4)2009059221
ns10.dnsmadeeasy.com (2600:1800:10::1)2009059221
ns10.silabs.com (208.94.148.4)2009059221
ns11.dnsmadeeasy.com (208.80.124.4)2009059221
ns11.dnsmadeeasy.com (2600:1801:11::1)2009059221
ns11.silabs.com (208.80.124.4)2009059221
ns12.dnsmadeeasy.com (208.80.126.4)2009059221
ns12.dnsmadeeasy.com (2600:1802:12::1)2009059221
ns12.silabs.com (208.80.126.4)2009059221
ns13.dnsmadeeasy.com (208.80.125.4)2009059221
ns13.dnsmadeeasy.com (2600:1801:13::1)2009059221
ns13.silabs.com (208.80.125.4)2009059221
ns14.dnsmadeeasy.com (208.80.127.4)2009059221
ns14.dnsmadeeasy.com (2600:1802:14::1)2009059221
ns14.silabs.com (208.80.127.4)2009059221
ns15.dnsmadeeasy.com (208.94.149.4)2009059221
ns15.dnsmadeeasy.com (2600:1800:15::1)2009059221
ns15.silabs.com (208.94.149.4)2009059221

Checks

  • ✓ Serial 2009059221 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 3m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 12h, retry 1h, expire 14d, negative TTL 3m.
    #23
  • i
    Hidden master
    The primary nameserver ns20.digicertdns.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 dns@digicertdns.com #25
    The SOA RNAME dns.digicertdns.com means dns@digicertdns.com.
  • ✓ Timestamp serial #26
    The serial 2009059221 is a Unix timestamp (2033-08-31 00:00 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

pass

38 records at the apex

Found

Read from
208.94.148.4:53
TypeValueTTL
SOAns20.digicertdns.com. dns.digicertdns.com. 2009059221 43200 3600 1209600 18086400
NSns14.dnsmadeeasy.com.86400
NSns11.dnsmadeeasy.com.86400
NSns12.dnsmadeeasy.com.86400
NSns10.dnsmadeeasy.com.86400
NSns13.dnsmadeeasy.com.86400
NSns15.dnsmadeeasy.com.86400
A104.68.241.1031800
MX20 mxb-0024c301.gslb.pphosted.com.3600
MX20 mxa-0024c301.gslb.pphosted.com.3600
TXT"atlassian-domain-verification=Qpmd9m/3W1lBx3uP+H6Xjz0+j3BsC9l0H9RudlPdcjlh4pQEhXgqLzdG/5mq3S19"86400
TXT"openai-domain-verification=dv-eZ98pUDcRTJiKvRA8tgT3KAA"86400
TXT"MS=ms26890246"86400
TXT"k9w5OSCED3woL10jmLO03zsLrnBZkclI93Dk4OOK1A4V8U3dar/HRtMnyIJp1EW7jjkxHSMExJZfa/CWtAV/Ww=="86400
TXT"_proofpoint-verification.silabs.com IN TXT 1bd3f725-6c68-44ad-bded-66b0e5ac1eed"86400
TXT"firebase=flickering-inferno-3077"86400
TXT"h1-domain-verification=GWU6nn14YW4zNJoy78p8iKCXAHfpT9qaGKCKCUQPiw38QRrY"86400
TXT"globalsign-domain-verification=o98p4y0ydyIg1tL2aHoprOdd0XguffAbs4DJLVt-ae"86400
TXT"_eznf7au50yloq5sc6fgh347q78ayyfj"86400
TXT"postman-domain-verification=512a2520f535426f5af31337865257e0b7dfda328fd50c5d9691a51c81672196fc62afd40ec565d840d7770d165b6af026339258ad4d01488ad82f15a082bde8"86400
TXT"cursor-domain-verification-4dwn2p=PxiGo6LTLJaJ7Ajw5V66dA3c2"86400
TXT"adobe-idp-site-verification=0242171d-ecab-41dd-a5e6-57276bcb08d1"86400
TXT"jamf-site-verification=7rdJTkXJziWWEbw2HiPzvA"86400
TXT"anthropic-domain-verification-hchp9a=TNSYjcjGOniwBI97RUmGYcuV9"86400
TXT"google-site-verification=eW1anvwADf7ZHv3wDzno1_lSf57j-P3rNippgKzVch4"86400
TXT"docker-verification=da27d6b0-4358-45f6-8c11-200187a6f337"86400
TXT"T3675+UCGn4orKt9FUKvtlsqdWlZErsobE/p/AeLJ90ZQn0IIp6aeyEWkI2zYILPMj1iYJ+UMNVkCGaORgGZqg=="86400
TXT"cB6+jkCgAy0f/wk6eDVRhXu1eBMJqUe+6siBPkkqok2mO/30x2rdXNq0f0wZ+T5u+LTjoE9SCDH/+wG/YxBreg=="86400
TXT"apple-domain-verification=RqJ6Ytt3WlxxSA6l"86400
TXT"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all"86400
CAA0 issue "amazontrust.com"1800
CAA0 issue "digicert.com"1800
CAA0 issue "amazon.com"1800
CAA0 issue "letsencrypt.org"1800
CAA0 issue "thawte.com"1800
CAA0 issue "amazonaws.com"1800
CAA0 issue "awstrust.com"1800
CAA0 iodef "mailto:noc@silabs.com"1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 30m, MX 1h, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazontrust.com, digicert.com, amazon.com, letsencrypt.org, thawte.com, amazonaws.com, awstrust.com.