washingtonpost.com

Checked 22 October 2026, 11:24 UTC · via 8.8.8.8
!Passed with warnings
26 passed 3 warnings 0 failed 2 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-11-12

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
13 November 1995
Last changed
1 October 2026
Expires
12 November 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns-1027.awsdns-00.org, ns-1840.awsdns-38.co.uk, ns-404.awsdns-50.com, ns-666.awsdns-19.net, sdns34.ultradns.biz, sdns34.ultradns.com, sdns34.ultradns.net, sdns34.ultradns.org
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 2027-11-12 #3
    The registration is valid until 2027-11-12 (385 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

pass

ns-1027.awsdns-00.org, ns-1840.awsdns-38.co.uk, ns-404.awsdns-50.com, ns-666.awsdns-19.net, sdns34.ultradns.biz, sdns34.ultradns.com, sdns34.ultradns.net, sdns34.ultradns.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1027.awsdns-00.org, ns-1840.awsdns-38.co.uk, ns-404.awsdns-50.com, ns-666.awsdns-19.net, sdns34.ultradns.biz, sdns34.ultradns.com, sdns34.ultradns.net, sdns34.ultradns.org
NS in the zone
ns-1027.awsdns-00.org, ns-1840.awsdns-38.co.uk, ns-404.awsdns-50.com, ns-666.awsdns-19.net, sdns34.ultradns.biz, sdns34.ultradns.com, sdns34.ultradns.net, sdns34.ultradns.org
NameserverAddressesNetwork (AS)Glue
ns-1027.awsdns-00.org205.251.196.3 2600:9000:5304:300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1840.awsdns-38.co.uk205.251.199.48 2600:9000:5307:3000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-404.awsdns-50.com205.251.193.148 2600:9000:5301:9400::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.148 2600:9000:5301:9400::1
ns-666.awsdns-19.net205.251.194.154 2600:9000:5302:9a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
sdns34.ultradns.biz156.154.142.34 2610:a1:1003::22AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
sdns34.ultradns.com156.154.140.34 2610:a1:1001::22AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.140.34 2610:a1:1001::22
sdns34.ultradns.net156.154.141.34 2610:a1:1002::22AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
sdns34.ultradns.org156.154.143.34 2610:a1:1004::22AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 8 nameservers #6
    Delegated to ns-1027.awsdns-00.org, ns-1840.awsdns-38.co.uk, ns-404.awsdns-50.com, ns-666.awsdns-19.net, sdns34.ultradns.biz, sdns34.ultradns.com, sdns34.ultradns.net, sdns34.ultradns.org.
  • ✓ 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 8 IPv4 /24s and 8 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 8 addresses; AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses.
  • ✓ Nameserver names under 5 TLDs #12
    Nameserver names use the TLDs .biz, .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1027.awsdns-00.org 205.251.196.3NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1027.awsdns-00.org 2600:9000:5304:300::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1840.awsdns-38.co.uk 205.251.199.48NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1840.awsdns-38.co.uk 2600:9000:5307:3000::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-404.awsdns-50.com 205.251.193.148NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-404.awsdns-50.com 2600:9000:5301:9400::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-666.awsdns-19.net 205.251.194.154NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-666.awsdns-19.net 2600:9000:5302:9a00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
sdns34.ultradns.biz 156.154.142.34NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns34.ultradns.biz 2610:a1:1003::22NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns34.ultradns.com 156.154.140.34NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns34.ultradns.com 2610:a1:1001::22NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns34.ultradns.net 156.154.141.34NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns34.ultradns.net 2610:a1:1002::22NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns34.ultradns.org 156.154.143.34NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns34.ultradns.org 2610:a1:1004::22NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 16 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: sdns34.ultradns.biz: "UltraDNS Nameserver"; sdns34.ultradns.com: "UltraDNS Nameserver"; sdns34.ultradns.net: "UltraDNS Nameserver"; sdns34.ultradns.org: "UltraDNS Nameserver".
    #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 1 · primary ns-1027.awsdns-00.org

Found

Primary (MNAME)
ns-1027.awsdns-00.org
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
3600 s / 900 s
Expire
2592000 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns-1027.awsdns-00.org (205.251.196.3)1
ns-1027.awsdns-00.org (2600:9000:5304:300::1)1
ns-1840.awsdns-38.co.uk (205.251.199.48)1
ns-1840.awsdns-38.co.uk (2600:9000:5307:3000::1)1
ns-404.awsdns-50.com (205.251.193.148)1
ns-404.awsdns-50.com (2600:9000:5301:9400::1)1
ns-666.awsdns-19.net (205.251.194.154)1
ns-666.awsdns-19.net (2600:9000:5302:9a00::1)1
sdns34.ultradns.biz (156.154.142.34)2016123960
sdns34.ultradns.biz (2610:a1:1003::22)2016123960
sdns34.ultradns.com (156.154.140.34)2016123960
sdns34.ultradns.com (2610:a1:1001::22)2016123960
sdns34.ultradns.net (156.154.141.34)2016123960
sdns34.ultradns.net (2610:a1:1002::22)2016123960
sdns34.ultradns.org (156.154.143.34)2016123960
sdns34.ultradns.org (2610:a1:1004::22)2016123960

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 1 on ns-1027.awsdns-00.org (205.251.196.3), ns-1027.awsdns-00.org (2600:9000:5304:300::1), ns-1840.awsdns-38.co.uk (205.251.199.48), ns-1840.awsdns-38.co.uk (2600:9000:5307:3000::1), ns-404.awsdns-50.com (205.251.193.148), ns-404.awsdns-50.com (2600:9000:5301:9400::1), ns-666.awsdns-19.net (205.251.194.154), ns-666.awsdns-19.net (2600:9000:5302:9a00::1); 2016123960 on sdns34.ultradns.biz (156.154.142.34), sdns34.ultradns.biz (2610:a1:1003::22), sdns34.ultradns.com (156.154.140.34), sdns34.ultradns.com (2610:a1:1001::22), sdns34.ultradns.net (156.154.141.34), sdns34.ultradns.net (2610:a1:1002::22), sdns34.ultradns.org (156.154.143.34), sdns34.ultradns.org (2610:a1:1004::22). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m, expire 30d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1027.awsdns-00.org is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 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

42 records at the apex

Found

Read from
205.251.196.3:53
TypeValueTTL
SOAns-1027.awsdns-00.org. awsdns-hostmaster.amazon.com. 1 3600 900 2592000 300900
NSns-1027.awsdns-00.org.3600
NSns-1840.awsdns-38.co.uk.3600
NSns-404.awsdns-50.com.3600
NSns-666.awsdns-19.net.3600
NSsdns34.ultradns.biz.3600
NSsdns34.ultradns.com.3600
NSsdns34.ultradns.net.3600
NSsdns34.ultradns.org.3600
A99.84.152.2060
A99.84.152.7760
A99.84.152.11960
A99.84.152.8660
MX10 mxa-001a3c01.gslb.pphosted.com.3600
MX10 mxb-001a3c01.gslb.pphosted.com.3600
TXT"MS=ms58521745"300
TXT"_40ij1ve2dtneubti00ikilfe0zlr0kz"300
TXT"_dhwsbe1t7yht6p4dsc72mcajq9aaum9"300
TXT"_globalsign-domain-verification=R1bvWDvJUF1gpXlmc7Q3deFwpZciil5dpJR4t-a8XM"300
TXT"_globalsign-domain-verification=SQONiBgTxRVzPPtIHjei_IUGCiAa0KxoVWFw1QfVes"300
TXT"_rm8r4wsr378iet73p2f9j7oecnksay1"300
TXT"_zj8o0fyk0qj8jy5pt1zr1543e97ew7c"300
TXT"brave-ledger-verification=28c1597498b6eafc29aac1f3a42f31559dfe03a832058ead6f684a518f180d62"300
TXT"f3de1c77b72748ff92a68f88f4d93dfd"300
TXT"globalsign-domain-verification=8frsHcE2ag-0ccaaP5BTpPmUJC8ob8pdjDQchfAWzD"300
TXT"google-site-verification=6Bi3yUCN2g3lzvqapLfrbgkQxob5YCjmZidGa2qiM4g"300
TXT"google-site-verification=MFW4gdPYqGnhzWA4FutyUzH4M-jIpbyJ3ml-l2UNyM4"300
TXT"google-site-verification=Xq6gcVYYZJtb2DQN6h2bo-hkrdmZpcdAKO8CeYl8290"300
TXT"google-site-verification=qcYuOKvxobypPYmqzzrcw5KiwtpfLgdEEt-HwMfLwvo"300
TXT"google-site-verification=xLI97dy4D9FGihhl23twW5HHhVSmpnr2nWComZhpQVo"300
TXT"knowbe4-site-verification=e04590e121eee5fbc18ada6449219119"300
TXT"mBd2513ESDgG6ZfaSrFYw4WaOC2b0M21Ehl8KWI3GmgTDpfYKwGuBum8ivsayoYLzVCetyXDieRUdW4qdQe+hw=="300
TXT"rovag_verification_token=C2158E1BE1D041B78CC57ED72101FF6C"300
TXT"slack-domain-verification=YsnaUOhPU4Y6dCz5a3TqBIs4DxEXrVFbuKbGFRyS"300
TXT"v=spf1 ip4:198.72.14.0/23 ip4:192.72.255.0/24 ip4:54.156.98.51 ip4:54.210.51.17 include:spf.protection.outlook.com include:madgexjb.com include:spf-001a3c01.pphosted.com include:amazonses.com -all"300
CAA0 issue "amazon.com"300
CAA0 issue "amazonaws.com"300
CAA0 issue "amazontrust.com"300
CAA0 issue "awstrust.com"300
CAA0 issue "entrust.net"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog"300

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 1h; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, amazonaws.com, amazontrust.com, awstrust.com, entrust.net, letsencrypt.org, pki.goog.