umich.formstack.com - robtex.com

umich.formstack.com

CNAMEformstack.com
DNSSEC⚠️ Not signed
A18.239.168.3🇺🇸 Amazon18.239.168.0/23
PTRserver-18-239-168-3.bos50.r.cloudfront.net
A18.239.168.12🇺🇸 Amazon18.239.168.0/23
A18.239.168.88🇺🇸 Amazon18.239.168.0/23
A18.239.168.117🇺🇸 Amazon18.239.168.0/23
NSns-1400.awsdns-47.org ⭐
A2600:9000:5305:7800::1Amazon2600:9000:5305::/48 - CloudFront
A205.251.197.120Amazon205.251.197.0/24 prefix
NSns-2016.awsdns-60.co.uk
A2600:9000:5307:e000::1Amazon2600:9000:5307::/48 - CloudFront
A205.251.199.224Amazon205.251.199.0/24 prefix
NSns-500.awsdns-62.com
A2600:9000:5301:f400::1Amazon2600:9000:5301::/48 - CloudFront
A205.251.193.244Amazon205.251.193.0/24 prefix
NSns-701.awsdns-23.net
A2600:9000:5302:bd00::1Amazon2600:9000:5302::/48 - CloudFront
A205.251.194.189Amazon205.251.194.0/24 prefix
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c23::1b🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadrs-in-f27.1e100.net
A64.233.180.26🇺🇸 Google64.233.180.0/24
PTRon-in-f26.1e100.net
PTRpe-in-f26.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4023:3003::1a🇺🇸 Google2607:f8b0::/32
PTRyulnkjt-in-f26.1e100.net
A172.253.145.27🇺🇸 Google172.253.145.0/24
PTRyulnkjt-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
MXalt4.aspmx.l.google.com(10)
TXT1password-site-verification=Z54MSWZVQ5EB5NAJSFYC5M6SIY
TXT6e7fd67ff8b9417093d9b09203e54c3c
TXTMS=ms84707320
TXTapple-domain-verification=K1svURlDal7GS8B5
TXTatlassian-domain-verification=n0GMi9mPghqJxXH0DP1uBixgL8k65ilPnsdFq8KOOjrMRrX...
TXTd77477e15a0de9a8
TXTfigma-domain-verification=1ba12c027b47bbebeb2de839f35815835d82c3ba764fd7124ba...
TXTgoogle-site-verification=7V2XB9GMV_DKwAa04x7RgzMShnS0xMI1_mewd1sJEBo
TXTgoogle-site-verification=VTlt1dsEuv_CYDkCOREHBFc44Egmk7DOc7A_2HX-CeY
TXTgoogle-site-verification=i2AzVBulmKeO0SNWxeqm31eII1RjZgJBLynTJFT9hXA
TXTgoogle-site-verification=lsWVzmtZwDD4ep3bEPWxIOLtaOScCMuBlASDsLbqRTI
TXTmandrill_verify.
TXTopenai-domain-verification=dv-euhzRrYe0QHvJMI1Xahrg5C8
TXTpardot_38532_*=f7f8524fdfb1512f69ece0a67773e3f43727a3041e46d888dafc5118dc24aeb9
TXTs426j8rnl6h1thibfh2kvh4o6b
TXTstatus-page-domain-verification=8ph6fmmtrpp8
TXTtk06oqhmkbh3c4lfb8ou9lhvqc
TXTtwilio-domain-verification=22dd421abca87b3cbd09c177e15f9975
TXTv=spf1 include:_spf.formstack_com._d.easydmarc.pro -all
SOAns-1400.awsdns-47.orgawsdns-hostmaster@amazon.com serial=1

formstack.com

DNSSEC⚠️ Not signed
A18.239.168.3🇺🇸 Amazon18.239.168.0/23
A18.239.168.12🇺🇸 Amazon18.239.168.0/23
A18.239.168.88🇺🇸 Amazon18.239.168.0/23
A18.239.168.117🇺🇸 Amazon18.239.168.0/23
NSns-1400.awsdns-47.org ⭐
NSns-2016.awsdns-60.co.uk
NSns-500.awsdns-62.com
NSns-701.awsdns-23.net
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXalt3.aspmx.l.google.com(10)
MXalt4.aspmx.l.google.com(10)
TXT1password-site-verification=Z54MSWZVQ5EB5NAJSFYC5M6SIY
TXT6e7fd67ff8b9417093d9b09203e54c3c
TXTMS=ms84707320
TXTapple-domain-verification=K1svURlDal7GS8B5
TXTatlassian-domain-verification=n0GMi9mPghqJxXH0DP1uBixgL8k65ilPnsdFq8KOOjrMRrX...
TXTd77477e15a0de9a8
TXTfigma-domain-verification=1ba12c027b47bbebeb2de839f35815835d82c3ba764fd7124ba...
TXTgoogle-site-verification=7V2XB9GMV_DKwAa04x7RgzMShnS0xMI1_mewd1sJEBo
TXTgoogle-site-verification=VTlt1dsEuv_CYDkCOREHBFc44Egmk7DOc7A_2HX-CeY
TXTgoogle-site-verification=i2AzVBulmKeO0SNWxeqm31eII1RjZgJBLynTJFT9hXA
TXTgoogle-site-verification=lsWVzmtZwDD4ep3bEPWxIOLtaOScCMuBlASDsLbqRTI
TXTmandrill_verify.
TXTopenai-domain-verification=dv-euhzRrYe0QHvJMI1Xahrg5C8
TXTpardot_38532_*=f7f8524fdfb1512f69ece0a67773e3f43727a3041e46d888dafc5118dc24aeb9
TXTs426j8rnl6h1thibfh2kvh4o6b
TXTstatus-page-domain-verification=8ph6fmmtrpp8
TXTtk06oqhmkbh3c4lfb8ou9lhvqc
TXTtwilio-domain-verification=22dd421abca87b3cbd09c177e15f9975
TXTv=spf1 include:_spf.formstack_com._d.easydmarc.pro -all
SOAns-1400.awsdns-47.orgawsdns-hostmaster@amazon.com serial=1
WOT: SAFE (87/100)
rank #2138 globally
rank #1143 in the tld
🔒 HSTS Preload (+subdomains)
WOT: SAFE (87/100)
📈 Tranco rank: #5,962

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DNS History

1 record (1 active, 0 former)

CNAMEformstack.com
●CNAMEformstack.com2026-04-23 → 2026-05-10 · 2 obs
● 2026-04-23 04:50:30
● 2026-05-10 07:00:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, k.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net...-
formstack.comns-701.awsdns-23.net, ns-500.awsdns-62.com, ns-1400.awsdns-47.org, ns-2016.awsdns-60.co.uk2 records

✅ Authoritative Response

Server:205.251.199.224

NS records: ns-701.awsdns-23.net, ns-500.awsdns-62.com, ns-1400.awsdns-47.org, ns-2016.awsdns-60.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for formstack.com (unsigned zone)

⏱️ Timing

Total: 1903ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1formstack.com

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-500.awsdns-62.com, ns-500.awsdns-62.com)

Analysis

IP Addresses

umich.formstack.com maps to four IP numbers: 18.239.168.3, 18.239.168.12, 18.239.168.88 and 18.239.168.117.

Name Servers

umich.formstack.com is delegated to four name servers: ns-500.awsdns-62.com, ns-701.awsdns-23.net, ns-1400.awsdns-47.org and ns-2016.awsdns-60.co.uk.

Host names with two IP numbers:

ns-500.awsdns-62.com points to: 2600:9000:5301:f400::1 and 205.251.193.244

ns-701.awsdns-23.net points to: 2600:9000:5302:bd00::1 and 205.251.194.189

ns-1400.awsdns-47.org points to: 2600:9000:5305:7800::1 and 205.251.197.120

ns-2016.awsdns-60.co.uk points to: 2600:9000:5307:e000::1 and 205.251.199.224

Mail Servers

umich.formstack.com 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.

umich.formstack.com shares at least partially some mail servers with other domains, for instance ns500698.ns500759.ns500759.ns500759.ns500698.ns500698.ns500698.ns500736.ns500708.ns500619.ns500686.ns500619.trackreceptor.com, marroquinera.co, alibhatti.com, merseybathrooms.net and emerald-labs.com.

These mail servers are often used with aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4004:c23::1b and 64.233.180.26

alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1a and 108.177.123.26

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