Port 4737IPDR Streaming Protocol (IPDR/SP)

IPDR/SP carries network usage and telemetry records from service-provider equipment to collection systems.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as ipdr-sp

Technical Details

what runs on :4737

IPDR/SP is a streaming protocol for transferring IPDR records, such as usage and service telemetry, from a record-producing network element to a collector. IANA registers port 4737 for both TCP and UDP; deployments commonly use TCP for the record stream. It is a specialized provider-network protocol, not a general-purpose user-facing service.

Security Information

exposure of :4737

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 1,572 ports — this one sits 0.6 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

IPDR records can reveal subscriber usage and operational details about a provider network. Keep the service on trusted management networks and restrict access to known collectors and network elements; it should not be exposed directly to the public internet. Do not assume the stream is encrypted or authenticated by default—protect it with network controls or an appropriate secure transport where needed.

Record

iana registry entry

port: :4737
service: IPDR Streaming Protocol (IPDR/SP)
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services
usage: IPDR/SP is used in service-provider networks to deliver Internet Protocol Detail Records from network elements to mediation or collection systems. Engineers are most likely to encounter it in carrier or cable-operator management environments, rather than on general-purpose internet hosts.
lookups: 0rank 993
added: 2026-10-05
updated: 2026-10-05
references: IANA service name registry — port 4737

Something wrong?

This record is maintained by the engineers who use port 4737. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-05.

01edit any field on a page of its own
02a model checks it for accuracy and spam
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edit this record →back to the registry

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all 1,572 in network services →

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :4737IPDR Streaming Protocol (IPDR/SP)

Technical Details

Security Information

Related Ports

Port 4737IPDR Streaming Protocol (IPDR/SP)