scholastic.com

Checked 22 October 2026, 10:34 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-10-20

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
21 October 1993
Last changed
18 September 2025
Expires
20 October 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info
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 2027-10-20 #3
    The registration is valid until 2027-10-20 (362 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update 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

warn

pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info
NS in the zone
ns1.scholastic.com, ns2.scholastic.com, pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk
NameserverAddressesNetwork (AS)Glue
ns1.scholastic.com (zone only)204.69.234.246AS12008 VERCARA - Vercara, LLC, US-
ns2.scholastic.com (zone only)204.74.101.246AS12008 VERCARA - Vercara, LLC, US-
pdns1.ultradns.net204.74.108.1 2001:502:f3ff::1AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns2.ultradns.net204.74.109.1 2610:a1:1014::1AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns3.ultradns.org199.7.68.1 2610:a1:1015::1AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns4.ultradns.org199.7.69.1 2001:502:4612::1AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns5.ultradns.info204.74.114.1 2610:a1:1016::1AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns6.ultradns.co.uk (zone only)204.74.115.1 2610:a1:1017::1AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 5 nameservers #6
    Delegated to pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: ns1.scholastic.com, ns2.scholastic.com, pdns6.ultradns.co.uk. ns1.scholastic.com, ns2.scholastic.com, pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk report NS ns1.scholastic.com ns2.scholastic.com pdns1.ultradns.net pdns2.ultradns.net pdns3.ultradns.org pdns4.ultradns.org pdns5.ultradns.info pdns6.ultradns.co.uk.
    #7
  • ✓ 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 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 14 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .info, .net, .org.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.scholastic.com, ns2.scholastic.com.
    #13

Nameservers

info

14 of 14 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.scholastic.com 204.69.234.246NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.scholastic.com 204.74.101.246NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns1.ultradns.net 204.74.108.1NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns1.ultradns.net 2001:502:f3ff::1NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.ultradns.net 204.74.109.1NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.ultradns.net 2610:a1:1014::1NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns3.ultradns.org 199.7.68.1NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns3.ultradns.org 2610:a1:1015::1NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns4.ultradns.org 199.7.69.1NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns4.ultradns.org 2001:502:4612::1NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns5.ultradns.info 204.74.114.1NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns5.ultradns.info 2610:a1:1016::1NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns6.ultradns.co.uk 204.74.115.1NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns6.ultradns.co.uk 2610:a1:1017::1NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 14 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: ns1.scholastic.com: "UltraDNS Nameserver"; ns2.scholastic.com: "UltraDNS Nameserver"; pdns1.ultradns.net: "UltraDNS Nameserver"; pdns2.ultradns.net: "UltraDNS Nameserver"; pdns3.ultradns.org: "UltraDNS Nameserver"; pdns4.ultradns.org: "UltraDNS Nameserver"; pdns5.ultradns.info: "UltraDNS Nameserver"; pdns6.ultradns.co.uk: "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

pass

serial 2013132908 · primary ns1.scholastic.com

Found

Primary (MNAME)
ns1.scholastic.com
Contact (RNAME)
signtadmins.scholastic.com
Serial
2013132908
Refresh / retry
10800 s / 1800 s
Expire
864000 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.scholastic.com (204.69.234.246)2013132908
ns2.scholastic.com (204.74.101.246)2013132908
pdns1.ultradns.net (204.74.108.1)2013132908
pdns1.ultradns.net (2001:502:f3ff::1)2013132908
pdns2.ultradns.net (204.74.109.1)2013132908
pdns2.ultradns.net (2610:a1:1014::1)2013132908
pdns3.ultradns.org (199.7.68.1)2013132908
pdns3.ultradns.org (2610:a1:1015::1)2013132908
pdns4.ultradns.org (199.7.69.1)2013132908
pdns4.ultradns.org (2001:502:4612::1)2013132908
pdns5.ultradns.info (204.74.114.1)2013132908
pdns5.ultradns.info (2610:a1:1016::1)2013132908
pdns6.ultradns.co.uk (204.74.115.1)2013132908
pdns6.ultradns.co.uk (2610:a1:1017::1)2013132908

Checks

  • ✓ Serial 2013132908 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 30m, expire 10d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.scholastic.com is one of the listed nameservers.
  • ✓ Contact signtadmins@scholastic.com #25
    The SOA RNAME signtadmins.scholastic.com means signtadmins@scholastic.com.
  • ✓ Timestamp serial #26
    The serial 2013132908 is a Unix timestamp (2033-10-17 03:35 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

info

50 records at the apex

Found

Read from
204.69.234.246:53
TypeValueTTL
SOAns1.scholastic.com. signtadmins.scholastic.com. 2013132908 10800 1800 864000 36003600
NSns1.scholastic.com.3600
NSns2.scholastic.com.3600
NSpdns1.ultradns.net.3600
NSpdns2.ultradns.net.3600
NSpdns3.ultradns.org.3600
NSpdns4.ultradns.org.3600
NSpdns5.ultradns.info.3600
NSpdns6.ultradns.co.uk.3600
A172.64.150.216300
A104.18.37.40300
AAAA2606:4700:4401::6812:2528300
AAAA2a06:98c1:310c::ac40:96d8300
MX10 mxa-003a5d01.gslb.pphosted.com.360
MX10 mxb-003a5d01.gslb.pphosted.com.360
TXT"262965386-618540055"360
TXT"7j52glcbkqn1d2vbgi3cd35s98"360
TXT"ZOOM_verify_rVR0dF0sQA2w5Iut5hjzUg"360
TXT"jamf-site-verification=XzzxausXw9ef9QQDX8ScjA"360
TXT"logmein-verification-code=wcuup9fPYGyNarovuQuCcAMU0"360
TXT"airtable-verification=933ff51c6212adad42be3f3eebcbf7b6"360
TXT"amazonses:RKGbr/0gYQXw5wiRteVEAqODx1rffdotPM6Tur6h/R4="360
TXT"adobe-sign-verification=3c027c5345f021e3f9c8ddf0846a01c2"360
TXT"knowbe4-site-verification=8b57e731ef3c2b9523a6dff80cf7d849"360
TXT"mongodb-site-verification=YwGDqUy39MT6gVYcanSdrRaB1GajnuyM"360
TXT"smartsheet-site-validation=h0GUxoGEL58VLnq30t3JWxOP2doKa8vn"360
TXT"teamviewer-sso-verification=be6a2bba75984d15b67ff847f2447490"360
TXT"onetrust-domain-verification=0dc020b5411444528f5f60d83f532da8"360
TXT"onetrust-domain-verification=246b3394378b494190a35f196b3c6e69"360
TXT"anthropic-domain-verification-1tqgqw=yVzAZucknwfTmuIgBEP492x4z"360
TXT"sinch-domain-verification=30c219f3-b6d6-49de-ba5e-60943c4f9e0a"360
TXT"globalsign-domain-verification=75FCE4B50EAAF22794D42CC9DB06025B"360
TXT"extensis-domain-verification=6a8cc93c-7b42-4fb1-9f93-e426e27ec55c"360
TXT"beautifulai-site-verification=28c40cf7-01b9-4e84-b1e3-7edb66f7394b"360
TXT"google-site-verification=4XPvEqU4FqehpWWAjhGEKax3ok9efWWtEjJDQ8L1K3g"360
TXT"google-site-verification=JqQy0CkenACfC-yy8Lz51mNaBZOoRn6RLudvYMq_jtY"360
TXT"google-site-verification=grjrvIPfAvbBzg9HsldNEppCxRgfhzkYvA4zOjRC8V4"360
TXT"google-site-verification=tyI87ks_Wlo0_S4mNxqOfdih9abUwY8GojDHCKVQSWU"360
TXT"google-site-verification=yIAakZ8DypOqzd4QJQXOtcHY31vwHlWDq-o11RSEWYA"360
TXT"apple-domain-verification=7x4qme6ifA9WmOhTdM-69Yf7ky-KO9p9XjbmG4M7_zM"360
TXT"google-site-verification=oZ39o-ecWKQtKrfFoiSVMLJ69e4lDl_HmPV4bZukmKA\010"360
TXT"6sdzzfSDw8OeZ3FHnOwfKJUPPgWnAMcrV/LLvqMsJXFR6N2Y5XF95HoYbifb9oSDLbeuyopNPac3Sl4x0dCf8w=="360
TXT"JgjYwoA7Efw4l45NLVGhqGLtqWcjGn2HIwHNtQtYoGV/o0W+WL3QWXnjZrXC2gNnJ+iOfvQQmaVXGTDgteO8wg=="360
TXT"Loz5FFsqfh5tPNp6ZBrlQZoO7dui+uOPOPB4UQ+5VH5ao8P8Xk1ddYRIiJENVFctFJLZA0xEF/v1mVjAn8LXHA=="360
TXT"XJ85mYRW2XRNnHThTYAIfG2e3S9niDojH6Dpn2AfM3vWJbZMrLM8J86Auub/tzNLf+0RM5ilRXt8dfKnfj3fFw=="360
TXT"adobe-idp-site-verification=545395c08ff118bae08a87e50b95baad56453c8239be08b09492dae47557fd90"360
TXT"atlassian-domain-verification=Oa5ay2XEe/jTwO7BSk5CWdZjmXAE1TGM0aTUahNehNvyrAANV6r5FPU93yUGVBYQ"360
TXT"atlassian-domain-verification=aaWAgT227wjWH8pnxiKGCeirN5eyPHw696tud5iGYHd0BvO62pTailTtjO8UU/UZ"360
TXT"atlassian-domain-verification=1gJUhwgrAZ12jH2qo4y5OzKngBTpFRbFL2LaeDB38hcCb942uaNLbPMAe55yHwDv\010"360
TXT"v=spf1 include:spf-003a5d01.pphosted.com include:spf-003a5d02.pphosted.com include:spf.protection.outlook.com ip4:54.208.143.144 ip4:54.208.103.240 ip4:107.20.210.250 ip4:52.1.14.157 ip4:199.19.138.98 ~all"360

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 6m, NS 1h. The NS TTL at the parent is 2d and in the zone 1h; 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