Which metros have ClouDNS (AS203391) connectivity?

ClouDNS (AS203391) is reachable in metros including Washington, DC, US, Frankfurt, DE, Santa Clara, CA, US, London, GB, Dallas, TX, US, Chicago, IL, US.

How do I order colocation with ClouDNS (AS203391) connectivity?

Pick any facility on this page and use its Get a Quote form. We'll route your request to the operator and arrange the cross-connect to ClouDNS (AS203391).

ClouDNS (AS203391)

Q: How many colocation facilities are on-net with ClouDNS (AS203391)?

ClouDNS (AS203391) (AS203391) is on-net at 157 colocation facilities listed on ColoMap.

157 colocation facilities on-net · across 42 metros · Content platform

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ClouDNS (AS203391) is managed anycast DNS from a small Bulgarian company — Cloud DNS Ltd of Sofia, founded in 2010, certified to ISO 27001 and an accredited domain registrar since 2024 — serving over a million domains and, by its own figure, more than eight billion queries a day. Its entire routed footprint is twelve prefixes: eight IPv4 blocks and four IPv6 blocks. That is precisely the shape of an anycast DNS operator and nothing at all like the shape of a carrier.

That matters for how this page should be read. The buildings listed here are places a ClouDNS anycast node runs, generally on capacity rented from whoever operates the site, rather than places where a tenant can cross-connect to ClouDNS or buy anything from it — there is no transport product, no transit and no port to order. The interconnection that does exist is public peering at a handful of fabrics weighted towards Bulgaria and emerging markets, aimed squarely at operators running large recursive resolvers who want a shorter path to these authoritative nodes. For everyone else the service is reachable over any transit, from any building.

ClouDNS (AS203391) is on-net at 157 colocation facilities in the ColoMap directory.

Top metros where ClouDNS (AS203391) is reachable: Washington, DC, US, Frankfurt, DE, Santa Clara, CA, US, London, GB, Dallas, TX, US.

Use the directory below to find a facility on-net with ClouDNS (AS203391), or request a quote tailored to your connectivity requirements.

ClouDNS (AS203391) at a Glance

AS number	AS203391
Network type	Managed anycast DNS operator
Network scale	Twelve prefixes in total, eight IPv4 and four IPv6, around 65 anycast points of presence claimed across six continents, over a million domains and a stated eight billion queries a day
Services	Managed and anycast DNS DNS with attack protection geographic DNS steering secondary DNS DNSSEC DNS failover uptime monitoring domain registration TLS certificates email hosting
DDoS mitigation	Bundled into the paid anycast tiers with no published filtering capacity
SLA	Resolution availability marketed at 100%, backed by escalating service credits rather than a lower committed figure
Peering policy	Open, no ratio requirement, no contract required, no location requirement
Also known as	ClouDNS

Top metros where ClouDNS (AS203391) is on-net

Operators co-located with ClouDNS (AS203391)

Equinix 41
Digital Realty 33
CoreSite 7
DataBank 5
Gigahost AS 3
QTS Data Centers 3
365 Data Centers 2
ColoCrossing 2

Facilities on-net with ClouDNS (AS203391)

View all 157 on the map →

Weismüllerstrasse 40 (FRA11)

Weismüllerstrasse 40, Frankfurt, 60314, DE

Metro: Frankfurt, DE
Weismüllerstrasse 21-23 (FRA3)

Weismüllerstrasse 21-23, Frankfurt, 60314, DE

Metro: Frankfurt, DE
Weismüllerstrasse 19 (FRA4)

Weismüllerstrasse 19, Frankfurt, 60314, DE

Metro: Frankfurt, DE
OpCore Paris PAR2

29 rue Edith Cavell, Vitry Sur Seinee, 94400, FR

Metro: Paris, FR
Hanauer Landstrasse 302 (FRA1)

Hanauer Landstrasse 302, Frankfurt, 60314, DE

Metro: Frankfurt, DE
Weismüllerstrasse 29-31 (FRA12)

Weismüllerstrasse 29-31, Frankfurt, 60314, DE

Metro: Frankfurt, DE
Weismüllerstrasse 36 (FRA8)

Weismüllerstrasse 36, Frankfurt, 60314, DE

Metro: Frankfurt, DE
20 rue des Gardinoux (PAR2)

20 rue des Gardinoux, Aubervilliers, Paris, Paris, 93300, FR

Metro: Paris, FR
Weismüllerstrasse 34 (FRA14)

Weismüllerstrasse 34, Frankfurt, 60314, DE

Metro: Frankfurt, DE
Hanauer Landstraße 296a (FRA7)

Hanauer Landstraße 296a, Frankfurt, 60314, DE

Metro: Frankfurt, DE

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