Data as of Nov 7, 2026
193.140.2.0/23
No anonymizer space · no proxy exits in 30 daysYildiz Teknik Universitesi · space held by National Academic Network and Information Center
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 193.140.0.0/16 since May 2005 | AS8517 | Business | 593 6 always on | National Academic Network and Information Center |
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 |
|---|---|---|---|---|---|---|
| 193.140.0.0/16 | 65,536 | TR-ULAKBIM-930901 | National Academic Network and Information Center (ORG-NANA1-RIPE) · TR | ALLOCATED PA | — | abuse@ |
| └ 193. | 1,792 | YILDIZ-NET | Yildiz Teknik University | ASSIGNED PA | Jan 30, 2009 | abuse@ via TR-ULAKBIM-930901 |
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
Registry
Holder
- Organization
- National Academic Network and Information Center
- Handle
- ORG-NANA1-RIPE
- Range
- 193.
140. 0. 0/ 16 - Registration type
- ALLOCATED PA
Origin network
AS211249
TR
- Name
- Yildiz Teknik Universitesi
- Type
- Education
- Registered
- May 28, 2021
- Domain
- yildiz.edu.tr
- Industry
- Education and Research
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Dec 2023 · 2.9 yr
- Origin networks
- 2
- Last change of origin
- Jul 2021
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 193.140.2.0/23 | AS8517 | /23 | RIPE | Another network |
| 193.140.2.0/23 | AS211249 | /23 | RIPE | RPKI valid |
| 193.140.0.0/16 | AS8517 | /24 | RIPE | Another network |
Whois
Registration for this announcement
- Range
- 193.
140. 1. 0 - 193. 140. 7. 255 - Netname
- YILDIZ-NET
- Registrant
- Yildiz Teknik University
- Registrant country
- TR
- Organization
- Yildiz Teknik University
- Org country
- TR
- Type
- ASSIGNED PA
- Created
- Jan 30, 2009
- Updated
- Jan 30, 2009
- Maintainer
- ULAKNET-MNT
- RIR
- RIPE NCC
- Country
- TR
- Delegated
- Feb 4, 2000
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ulakbim. gov. tr - Name
- Abuse-C Role
- Handle
- AR17404-RIPE