dot.bi

developer.cards

HTTP 521 SPF only DNSSEC unsigned Cloudflare Microsoft 365
“developer” in other TLDs Compare

Registration

Source: RDAP · rdap.identitydigital.services Fetched 2026-10-16 10:38 UTC
Created
2019-12-27 (6 years ago)
Expires
2026-12-27 (2 months from now)
Last updated
2026-08-12
Registrar
GoDaddy.com, LLC · IANA 146
Statuses
client delete prohibitedclient renew prohibitedclient transfer prohibitedclient update prohibited
DNSSEC
Unsigned
Nameservers (registry)
emma.ns.cloudflare.com · greg.ns.cloudflare.com
Record
registry RDAP · registrar RDAP

DNS

Source: live resolutionResolved 2026-10-16 10:38 UTC
TypeValue
NSemma.ns.cloudflare.com · greg.ns.cloudflare.com
A104.21.50.83
A172.67.159.125
AAAA2606:4700:3031::ac43:9f7d
AAAA2606:4700:3033::6815:3253
MX0 developer-cards.mail.protection.outlook.com
TXTMS=ms19678842
TXTv=spf1 include:spf.protection.outlook.com -all
SOAemma.ns.cloudflare.com dns.cloudflare.com serial 2417131290

Certificates

Source: Certificate Transparency logs

No certificate for this domain has passed through the logs dot.bi follows since it started watching. Older certificates are not back-filled.

Hosting

Source: DNS + Team Cymru
IP
104.21.50.83
Network
AS13335 · CLOUDFLARENET - Cloudflare, Inc., US
Provider
Cloudflare
Country
US (network registration, not server location)
CDN
Cloudflare
IPv6
yes

Web

Source: dot.bi probeProbed 2026-10-16 10:38 UTC
Status
521
Final URL
https://developer.cards/
Title
—
Server
cloudflare
Technologies
none detected
HSTS
no

Email

Source: DNS

SPF only SPF is published but there is no DMARC policy.

Provider
Microsoft 365
SPF
present all: fail
DMARC
missing
DKIM
not found common selectors only

Age

Source: Wayback Machine
First capture
—
Years archived
—
Registry created
2019-12-27
In dot.bi since
2026-10-13 · Zone file

Name analysis

dot.bi dictionaries EN · FR
Words
developer EN single
Length
9 characters
Digits · hyphens
none · none
Readability
high
Brandability
90 / 100 heuristic

Same name, other TLDs

DNS check, cached a day
DomainResolvesIn dot.bi
developer.com yes profile
developer.net yes look up
developer.org yes look up
developer.io yes profile
developer.co yes profile
developer.ai yes look up
developer.app yes profile
developer.dev yes profile
“No DNS” means no nameservers answered. It does not mean the domain is available.

History observed by dot.bi

Since 2026-10-130 events