challenge.gov - robtex.com

challenge.gov

DNSSEC🔒 Signed (DS record present)
A159.142.191.107🇺🇸 AS16524159.142.190.0/23
PTRhost.159-142-191-107.gsa.gov
NSdns2.gsa.gov ⭐
A76.223.24.135Amazon76.223.16.0/20
NSdns.gsa.gov
A2600:1f16:8f2:d500::4
A13.248.142.184Amazon13.248.128.0/20
NSdns3.gsa.gov
A13.248.144.182Amazon13.248.144.0/20
NSdns4.gsa.gov
A2600:1f14:653:bb00:b24e:739c:b87d:8feeAmazon2600:1f14::/37
A13.248.149.147Amazon13.248.144.0/20
NSdns5.gsa.gov
A76.223.9.162Amazon76.223.0.0/20
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1b🇺🇸 Google2607:f8b0:4004::/48
PTRbk-in-f27.1e100.net
A172.253.62.27🇺🇸 Google172.253.62.0/24
PTRbc-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulis-in-f27.1e100.net
A74.125.27.26🇺🇸 Google74.125.27.0/24
PTRyutulis-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f26.1e100.net
A192.178.209.26🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4024:c0d::1b🇺🇸 Google2607:f8b0::/32
PTRmj-in-f27.1e100.net
A192.178.152.26🇺🇸 Google192.178.152.0/24
PTRmj-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4023:403::1a🇺🇸 Google2607:f8b0::/32
PTRgg-in-f26.1e100.net
A142.250.96.27🇺🇸 Google142.250.96.0/24
PTRgg-in-f27.1e100.net
TXTamazonses:nYH0JuMG9fZipOEeSQuJI0zkMtSE/O2rhkY4EquztWM=
TXTv=spf1 include:spf_sa.gsa.gov ip4:52.247.150.17 include:1962994.spf05.hubspot...
TXTn99vf8kufk66l1dfiemv47ennt
TXTgoogle-site-verification=oUCYv-kO8yizhDvNj27YU7jch6xQbJTTbfd0LuPKakI
SOAdns.gsa.govhostmaster@gsa.gov serial=790959626

gov

DNSSEC🔒 Signed (DS record present)
NSa.ns.gov ⭐
NSb.ns.gov
NSc.ns.gov
NSd.ns.gov
SOAa.ns.govdns@cloudflare.com serial=1773061515
rank #79135 globally
rank #647 in the tld
🔒 HSTS Preload (+subdomains)
WOT: SAFE (95/100)
📈 Tranco rank: #301,354

Subdomains

www.challenge.gov

Same first word

challenge.gr
challenge.eu
challenge.net
challenge.ph
challenge.ninja
challenge.info
challenge.edu.mk
challenge.es
challenge.biz
challenge.co
challenge.city
challenge.gg
challenge.si
challenge.aero
challenge.media
challenge.ae
challenge.se
challenge.lu
challenge.tn
challenge.gr.jp
challenge.org.il
challenge.ma
challenge.land
challenge.pink
challenge.org
challenge.asia
challenge.pt
challenge.com.ua
challenge.mx
challenge.de
challenge.ca
challenge.at
challenge.center
challenge.place
challenge.cards
challenge.org.uk
challenge.pro
challenge.co.il
challenge.com
challenge.fr
challenge.ne.jp
challenge.lt
challenge.co.jp
challenge.it
challenge.ru
challenge.cz
challenge.fi
challenge.ie
challenge.blue
challenge.gov
challenge.org.ru
challenge.zone
challenge.team
challenge.to
challenge.org.ua
challenge.co.at
challenge.me
challenge.nl
challenge.coach
challenge.ro
challenge.com.ph
challenge.ch
challenge.dyndns.biz
challenge.agency
challenge.be
challenge.kz
challenge.camp
challenge.swiss
challenge.live
challenge.nu
challenge.us
challenge.hu
challenge.net.au
challenge.mobi

Similar names

ellechang.com
chenlegal.com
changlele.com
ellacheng.com

DNS History

24 records (11 active, 13 former)

20162017201820192020202120222023202420252026NSdns.gsa.govdns2.gsa.govdns3.gsa.govdns4.gsa.govdns5.gsa.govMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA159.142.191.107173.252.133.159173.252.133.160216.128.242.243216.128.243.1482607:f020:2004:1911:cafe:dec:af:602607:f020:2004:1913::502607:f020:4:1911:cafe:dec:af:602607:f020:4:1913::5054.85.132.205
●NSdns.gsa.gov2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
●NSdns2.gsa.gov2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
●NSdns3.gsa.gov2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
●NSdns4.gsa.gov2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
●NSdns5.gsa.gov2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
●MXalt1.aspmx.l.google.com2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
●MXalt2.aspmx.l.google.com2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
●MXalt3.aspmx.l.google.com2026-02-15 → 2026-03-09 · 3 obs
○ 2017-09-21 20:42:10
● 2026-02-15 08:09:36
● 2026-03-09 13:25:32
●MXalt4.aspmx.l.google.com2026-02-15 → 2026-03-09 · 3 obs
○ 2017-09-21 20:42:10
● 2026-02-15 08:09:36
● 2026-03-09 13:25:32
●MXaspmx.l.google.com2015-06-07 → 2026-03-09 · 2 obs
● 2015-06-07 12:18:52
● 2026-03-09 13:25:32
○MXaspmx2.googlemail.com2015-06-07 → 2017-09-21 · 4 obs
● 2015-06-07 12:18:52
● 2017-09-21 20:42:10
○ 2026-02-15 08:09:36
○ 2026-03-09 13:25:32
○MXaspmx3.googlemail.com2015-06-07 → 2017-09-21 · 4 obs
● 2015-06-07 12:18:52
● 2017-09-21 20:42:10
○ 2026-02-15 08:09:36
○ 2026-03-09 13:25:32
○MXaspmx4.googlemail.com2015-06-07 → 2017-09-21 · 4 obs
● 2015-06-07 12:18:52
● 2017-09-21 20:42:10
○ 2026-02-15 08:09:36
○ 2026-03-09 13:25:32
○MXaspmx5.googlemail.com2015-06-07 → 2017-09-21 · 4 obs
● 2015-06-07 12:18:52
● 2017-09-21 20:42:10
○ 2026-02-15 08:09:36
○ 2026-03-09 13:25:32
●A159.142.191.1072026-02-15 → 2026-03-09 · 3 obs
○ 2017-09-21 20:42:10
● 2026-02-15 08:09:36
● 2026-03-09 13:25:32
○A173.252.133.1592015-10-29 → 2016-08-18 · 5 obs
○ 2015-06-07 12:18:52
● 2015-10-29 18:16:40
● 2016-08-18 06:47:40
○ 2016-09-04 12:41:06
○ 2026-03-09 13:25:32
○A173.252.133.1602015-06-07 → 2015-06-07 · 3 obs
● 2015-06-07 12:18:52
○ 2015-10-29 18:16:40
○ 2026-03-09 13:25:32
○A216.128.242.2432015-10-29 → 2016-08-18 · 5 obs
○ 2015-06-07 12:18:52
● 2015-10-29 18:16:40
● 2016-08-18 06:47:40
○ 2016-09-04 12:41:06
○ 2026-03-09 13:25:32
○A216.128.243.1482015-06-07 → 2015-06-07 · 3 obs
● 2015-06-07 12:18:52
○ 2015-10-29 18:16:40
○ 2026-03-09 13:25:32
○A2607:f020:2004:1911:cafe:dec:af:602015-06-07 → 2015-06-07 · 3 obs
● 2015-06-07 12:18:52
○ 2015-10-29 18:16:40
○ 2026-03-09 13:25:32
○A2607:f020:2004:1913::502015-10-29 → 2016-08-18 · 5 obs
○ 2015-06-07 12:18:52
● 2015-10-29 18:16:40
● 2016-08-18 06:47:40
○ 2016-09-04 12:41:06
○ 2026-03-09 13:25:32
○A2607:f020:4:1911:cafe:dec:af:602015-06-07 → 2015-06-07 · 3 obs
● 2015-06-07 12:18:52
○ 2015-10-29 18:16:40
○ 2026-03-09 13:25:32
○A2607:f020:4:1913::502015-10-29 → 2016-08-18 · 5 obs
○ 2015-06-07 12:18:52
● 2015-10-29 18:16:40
● 2016-08-18 06:47:40
○ 2016-09-04 12:41:06
○ 2026-03-09 13:25:32
○A54.85.132.2052016-09-04 → 2017-09-21 · 5 obs
○ 2016-08-18 06:47:40
● 2016-09-04 12:41:06
● 2017-09-21 20:42:10
○ 2026-02-15 08:09:36
○ 2026-03-09 13:25:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
govc.ns.gov, a.ns.gov, d.ns.gov, b.ns.gov-
challenge.govdns.gsa.gov, dns2.gsa.gov, dns3.gsa.gov, dns4.gsa.gov...7 records

✅ Authoritative Response

Server: 13.248.142.184

NS records: dns.gsa.gov, dns2.gsa.gov, dns3.gsa.gov, dns4.gsa.gov, dns5.gsa.gov

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 515ms | Queries: -

📄 Records

TypeCountSample Data
A1159.142.191.107
NS5dns3.gsa.gov, dns4.gsa.gov...
MX5alt4.aspmx.l.google.com (pri: 10), alt2.aspmx.l.google.com (pri: 5)...
TXT4google-site-verification=oUCYv-kO8yizhDv, v=spf1 include:spf_sa.gsa.gov ip4:52.247...
SOA1dns.gsa.gov hostmaster.gsa.gov

📌 Glue Records Collected

Total: 7

Out-of-bailiwick: 7 (dns.gsa.gov, dns.gsa.gov, dns2.gsa.gov...)

Analysis

Hierarchy

The parent of www.challenge.gov is challenge.gov.

IP Addresses

challenge.gov points to a single IP number: 159.142.191.107.

Other host names, for instance madeinamerica.gov, vcss.gsa.gov, fsd.gov, buyamerican.gov and idmanagement.gov share IP numbers with challenge.gov.

Name Servers

challenge.gov is delegated to five name servers: dns2.gsa.gov, dns3.gsa.gov, dns4.gsa.gov, dns5.gsa.gov and dns.gsa.gov.

challenge.gov shares name servers with other domains at least partially, for instance forms.gov, info.gov, pic.gov, cfa.gov and sftool.gov.

these name servers are often used together with the name servers dns6.gsa.gov.

Host names with two IP numbers:

The host name dns4.gsa.gov points to: 2600:1f14:653:bb00:b24e:739c:b87d:8fee and 13.248.149.147.

The host name dns.gsa.gov points to: 2600:1f16:8f2:d500::4 and 13.248.142.184.

Host names with one IP number:

The host name dns2.gsa.gov points to: 76.223.24.135.

The host name dns3.gsa.gov points to: 13.248.144.182.

The host name dns5.gsa.gov points to: 76.223.9.162.

Mail Servers

challenge.gov is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27.

alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26.

alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26.

alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26.

alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27.