keystonelearning.org - robtex.com

keystonelearning.org

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:a2b0🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:59ac🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.89.172Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.162.176🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbart.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b47🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbart.ns.cloudflare.com
A2803:f800:50::6ca2:c147🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbart.ns.cloudflare.com
A2a06:98c1:50::ac40:2147🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbart.ns.cloudflare.com
A108.162.193.71🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbart.ns.cloudflare.com
A172.64.33.71🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbart.ns.cloudflare.com
A173.245.59.71🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbart.ns.cloudflare.com
NSserena.ns.cloudflare.com
A2606:4700:50::adf5:3adc🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRserena.ns.cloudflare.com
A2803:f800:50::6ca2:c0dc🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRserena.ns.cloudflare.com
A2a06:98c1:50::ac40:20dc🇺🇸 Cloudflare2a06:98c1:50::/45
PTRserena.ns.cloudflare.com
A108.162.192.220🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRserena.ns.cloudflare.com
A172.64.32.220🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRserena.ns.cloudflare.com
A173.245.58.220🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRserena.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c1b::1b🇺🇸 Google2607:f8b0:4004::/48
PTRwv-in-f27.1e100.net
A142.250.31.27🇺🇸 Google142.250.31.0/24
PTRbj-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4023:2801::1b🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f27.1e100.net
A192.178.128.26🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4023:3003::1b🇺🇸 Google2607:f8b0::/32
PTRyulnkjt-in-f27.1e100.net
A172.253.145.27🇺🇸 Google172.253.145.0/24
PTRyulnkjt-in-f27.1e100.net
MXaspmx2.googlemail.com(10)
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.27🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXaspmx3.googlemail.com(10)
A2607:f8b0:4023:3003::1b🇺🇸 Google2607:f8b0::/32
PTRyulnkjt-in-f27.1e100.net
A172.253.145.27🇺🇸 Google172.253.145.0/24
PTRyulnkjt-in-f27.1e100.net
TXT6soimhb900qo3ucutklqisdftn
TXTapple-domain-verification=yaXExMA0M4jUD5Ff
TXTgoogle-site-verification=hj9rdWJKXirpOWVUSZ5CefMhW3kSBZ1PmMP1K0Wriyk
TXTplucatjf2aitchfss1v4bnquak
TXTto4655qj6jsil3m6r6strhcep
TXTv=spf1 a: ip4:198.248.112.0/24 include:_spf.google.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.89.172, 172.67.162.176
IPv6 hints2606:4700:3033::ac43:a2b0, 2606:4700:3036::6815:59ac
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=77, name=cloudflare-ech.com
SOAbart.ns.cloudflare.comdns@cloudflare.com serial=2399533145

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1778305290
📈 Tranco rank: #883,352

PTR for

49.112.248.198.in-addr.arpa
140.112.248.198.in-addr.arpa
139.112.248.198.in-addr.arpa
31.112.248.198.in-addr.arpa

Subdomains

nkesc.keystonelearning.org
fhsec.keystonelearning.org
reno.keystonelearning.org
sek637.keystonelearning.org
liberal.keystonelearning.org
www.keystonelearning.org

Same first word

keystonelearning.com
keystonelearning.org

DNS History

19 records (11 active, 8 former)

20162017201820192020202120222023202420252026NSbart.ns.cloudflare.comserena.ns.cloudflare.comkic.kanren.netnamesurfer.kanren.netnic.kanren.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA104.21.89.172172.67.162.1762606:4700:3033::ac43:a2b02606:4700:3036::6815:59ac188.114.96.0188.114.97.0198.248.112.52a06:98c1:3120::2a06:98c1:3121::
●NSbart.ns.cloudflare.com2026-03-15 → 2026-05-09 · 3 obs
○ 2017-02-14 05:04:16
● 2026-03-15 04:59:48
● 2026-05-09 05:58:40
○NSkic.kanren.net2015-06-01 → 2017-02-14 · 4 obs
● 2015-06-01 17:02:42
● 2017-02-14 05:04:16
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40
○NSnamesurfer.kanren.net2015-06-01 → 2017-02-14 · 4 obs
● 2015-06-01 17:02:42
● 2017-02-14 05:04:16
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40
○NSnic.kanren.net2015-06-01 → 2017-02-14 · 4 obs
● 2015-06-01 17:02:42
● 2017-02-14 05:04:16
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40
●NSserena.ns.cloudflare.com2026-03-15 → 2026-05-09 · 3 obs
○ 2017-02-14 05:04:16
● 2026-03-15 04:59:48
● 2026-05-09 05:58:40
●MXalt1.aspmx.l.google.com2015-06-01 → 2026-05-09 · 2 obs
● 2015-06-01 17:02:42
● 2026-05-09 05:58:40
●MXalt2.aspmx.l.google.com2015-06-01 → 2026-05-09 · 2 obs
● 2015-06-01 17:02:42
● 2026-05-09 05:58:40
●MXaspmx.l.google.com2015-06-01 → 2026-05-09 · 2 obs
● 2015-06-01 17:02:42
● 2026-05-09 05:58:40
●MXaspmx2.googlemail.com2015-06-01 → 2026-05-09 · 2 obs
● 2015-06-01 17:02:42
● 2026-05-09 05:58:40
●MXaspmx3.googlemail.com2015-06-01 → 2026-05-09 · 2 obs
● 2015-06-01 17:02:42
● 2026-05-09 05:58:40
●A104.21.89.1722026-03-15 → 2026-05-09 · 3 obs
○ 2017-02-14 05:04:16
● 2026-03-15 04:59:48
● 2026-05-09 05:58:40
●A172.67.162.1762026-03-15 → 2026-05-09 · 3 obs
○ 2017-02-14 05:04:16
● 2026-03-15 04:59:48
● 2026-05-09 05:58:40
○A188.114.96.02026-03-15 → 2026-05-09 · 2 obs
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40
○A188.114.97.02026-03-15 → 2026-05-09 · 2 obs
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40
○A198.248.112.52015-06-01 → 2017-02-14 · 4 obs
● 2015-06-01 17:02:42
● 2017-02-14 05:04:16
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40
●A2606:4700:3033::ac43:a2b02026-03-15 → 2026-05-09 · 3 obs
○ 2017-02-14 05:04:16
● 2026-03-15 04:59:48
● 2026-05-09 05:58:40
●A2606:4700:3036::6815:59ac2026-03-15 → 2026-05-09 · 3 obs
○ 2017-02-14 05:04:16
● 2026-03-15 04:59:48
● 2026-05-09 05:58:40
○A2a06:98c1:3120::2026-03-15 → 2026-05-09 · 2 obs
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40
○A2a06:98c1:3121::2026-03-15 → 2026-05-09 · 2 obs
○ 2026-03-15 04:59:48
○ 2026-05-09 05:58:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
keystonelearning.orgbart.ns.cloudflare.com, serena.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.220

NS records: bart.ns.cloudflare.com, serena.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for keystonelearning.org (unsigned zone)

⏱️ Timing

Total: 571ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.89.172, 172.67.162.176
AAAA22606:4700:3036::6815:59ac, 2606:4700:3033::ac43:a2b0
NS2bart.ns.cloudflare.com, serena.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...
TXT66soimhb900qo3ucutklqisdftn, apple-domain-verification=yaXExMA0M4jUD5...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1bart.ns.cloudflare.com dns.cloudflare.co

Analysis

Hierarchy

keystonelearning.org is a parent of nkesc.keystonelearning.org, fhsec.keystonelearning.org, reno.keystonelearning.org, sek637.keystonelearning.org, liberal.keystonelearning.org and a few other host names.

IP Addresses

keystonelearning.org resolves to four IP numbers: 2606:4700:3033::ac43:a2b0, 2606:4700:3036::6815:59ac, 104.21.89.172 and 172.67.162.176.

Other host names such as wap.shopkurtbusch.com, timesunionhalf.com, hngmie.com, www.billofrights.com and babilonia.org.mx share IPs with keystonelearning.org.

Name Servers

keystonelearning.org is delegated to two name servers: bart.ns.cloudflare.com and serena.ns.cloudflare.com.

keystonelearning.org shares the same name server setup as dropals.com, brigzzy.net, digitalmaker.com.br, writingpaperforme.com and rabbleon.com.

keystonelearning.org at least partially shares name servers with other domains, for instance rphokicuan.cyou, luongson161.tv, scms.com.au, kinokiste.club and fiabnarzedziownia.pl.

These name servers are commonly used with hera.ns.cloudflare.com and lola.ns.cloudflare.com.

Host names with six IP numbers:

bart.ns.cloudflare.com points to 2606:4700:58::adf5:3b47, 2803:f800:50::6ca2:c147, 2a06:98c1:50::ac40:2147, 108.162.193.71, 172.64.33.71 and 173.245.59.71.

serena.ns.cloudflare.com points to 2606:4700:50::adf5:3adc, 2803:f800:50::6ca2:c0dc, 2a06:98c1:50::ac40:20dc, 108.162.192.220, 172.64.32.220 and 173.245.58.220.

Mail Servers

Five mail servers handle keystonelearning.org: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

keystonelearning.org shares at least partially some mail servers with other domains, including brndini.co.il, panepucci.com.br, ns500759.ns500759.ns500759.ns500735.ns500698.ns500698.ns500736.ns500735.ns500698.ns500735.ns500698.ns500652.ns500619.ns500619.trackreceptor.com, ns500671.ns500742.ns500731.ns500704.ns500671.ns500705.ns500678.ns500649.ns500688.ns500291.ns500291.ns500153.tenderladiesbz.com and ns500699.ns500734.ns500699.ns500699.ns500734.ns500734.ns500693.ns500699.ns500693.ns500588.ns500612.ns500612.ns500632.ns500612.ns500578.ns500110.dtrkdll.com.

these mail servers are often used together with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx5.googlemail.com and aspmx4.googlemail.com.

Host names with two IP numbers:

aspmx2.googlemail.com points to 2800:3f0:4003:c0f::1b and 108.177.123.27

aspmx3.googlemail.com points to 2607:f8b0:4023:3003::1b and 172.253.145.27

aspmx.l.google.com points to 2607:f8b0:4004:c1b::1b and 142.250.31.27

alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1b and 192.178.128.26

alt2.aspmx.l.google.com points to 2607:f8b0:4023:3003::1b and 172.253.145.27

Names pointing to 2607:f8b0:4023:3003::1b: aspmx3.googlemail.com and alt2.aspmx.l.google.com

Names pointing to 172.253.145.27: aspmx3.googlemail.com and alt2.aspmx.l.google.com