Data as of Nov 7, 2026
204.237.248.0/23
No anonymizer space · no proxy exits in 30 daysNBCUniversal · space held by PacketExchange, Inc
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 204.237.128.0/17 since Apr 2015 | AS3257 | Unknown | 12 | PacketExchange, Inc |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 204.237.128.0/17 | 32,768 | NETBLK-PACKETEXCHANGE-V4-08 | PacketExchange, Inc (PACKE-25) · US | Direct Allocation | Sep 9, 2009 | abuse@ |
| └ 204.237.248.0/23 | 512 | NBCUNIVERSAL-GTT | NBC Universal (C06276386) · US | Reassigned | Dec 14, 2016 | abuse@ via NETBLK-PACKETEXCHANGE-V4-08 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
IPv4 market
Holder
- Organization
- PacketExchange, Inc
- Handle
- PACKE-25
- Range
- 204.
237. 128. 0/ 17 - Registration type
- Direct Allocation
- Record created
- Sep 9, 2009
Origin network
AS17035
US
- Name
- NBCUniversal
- Type
- Business
- Registered
- Jul 17, 2000
- Domain
- nbcuni.com
- Industry
- Radio and Television Providers
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2017
- Current origin since
- Jan 2017 · 9.8 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 204.
237. 248. 0/ 23 - Netname
- NBCUNIVERSAL-GTT
- Registrant
- NBC Universal
- Organization
- NBC Universal (C06276386)
- Type
- Reassigned
- Handle
- NET-204-237-248-0-1
- Parent
- NET-204-237-128-0-1
- Created
- Dec 14, 2016
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 9, 2009
- Status
- assigned
Report abuse
Abuse contact
- abuse@
gtt. net - Name
- GTT Abuse Department
- Phone
- +1-703-442-5500
- Handle
- GAD46-ARIN