net.SplitHostPort
standard libraryThe 424th most-called standard-library function by production calls. Called 2,491 times across 412 modules; 1,968 of those run outside tests and generated code.
1% in production calls vs 2026-W37 (1,954 → 1,968)
- prod calls
- 1,968
- non-test, non-generated
- all calls
- 2,491
- total callsites
- modules
- 412
- distinct callers
- in loop
- 10%
- of prod calls
- in tests
- 21%
- 515 calls
- resolved
- 100%
- to a known target
resolution mix
How each call resolves
How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →
- Package function100%A direct call to an exported package function, resolved by type.
who calls this
Notable callers
Production calls into SplitHostPort from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 93 5%
- Istio 76 4%
- Tailscale 54 3%
- Docker 53 3%
- InfluxDB 45 2%
where it's called
Callsites in the wild
12 representative callsites of 2,491, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
-
cockroachdb/cockroach @v19.2.12+incompatible
in loop -
miekg/dns @v0.6.114
cmd/atomdns/internal/localaddr/localaddr.go:15
in loop - in loop
- in loop
-
docker/docker @v28.5.2+incompatible
in loop -
etcd/client/pkg/v3 @v3.7.1
types/urls.go:42
in loop -
DNSCrypt/dnscrypt-proxy @v0.0.0-20260907210843-47ce24df6e86
in loop -
IBM/sarama @v1.60.2
in loop - in loop
-
Venafi/vcert/v5 @v5.13.9
in loop -
axllent/mailpit @v1.31.2
in loop
top callers
The modules that reach for it
The modules that call SplitHostPort most in this snapshot.
- github.com/influxdata/telegraf663%
- github.com/tailscale/tailscale663%
- tailscale.com663%
- github.com/netbirdio/netbird592%
- github.com/traefik/traefik/v3552%
siblings
More from net
The other most-called functions in this package. See all →