Data as of Nov 12, 2026
63.172.97.64/27
No anonymizer space · no proxy exits in 30 daysAS32068 · space held by Cogent Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 63.160.0.0/12 | AS174 | Internet provider | 188 24 always on | Cogent Communications, LLC |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 63.160.0.0/12 | 1,048,576 | COGENT-63-160-0 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Dec 3, 1999 | abuse@ |
| └ 63.172.97.0/24 | 256 | SPRINTLINK | Memphis Networx (MEMPH-1) · US | Reallocated | Sep 19, 2006 | abuse@ |
| └ 63.172.97.64/27 | 32 | MNX-BOLTO001 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 63.172.97.0/24
- Prefix
- 63.172.97.0/24
- Announced by
- AS32068
- Type
- Unknown
- RPKI
- No RPKI
- Netname
- SPRINTLINK
- Registrant
- Memphis Networx
- RIR
- ARIN
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 63.
160. 0. 0/ 12 - Registration type
- Direct Allocation
- Record created
- Dec 3, 1999
- Reallocated to
- Memphis Networx (MEMPH-1)
- Reallocated range
- 63.
172. 97. 0/ 24 - Reallocated
- Sep 19, 2006
Origin network
AS32068
ZZ
- Registered
- Nov 11, 2026
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
63.172.97.0/24
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 63.
172. 97. 0/ 24 - Netname
- SPRINTLINK
- Registrant
- Memphis Networx
- Organization
- Memphis Networx (MEMPH-1)
- Org address
- 901 Front Street, Suite 200, Louisville, CO, 80027
- Org country
- US
- Type
- Reallocated
- Handle
- NET-63-172-97-0-1
- Parent
- NET-63-160-0-0-1
- Created
- Sep 19, 2006
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 3, 1999
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN