13979 ATT-IPFR, US
Adjacency: 12 Upstream: 6 Downstream: 6
Upstream Adjacent AS list
AS30016 AS01-NATC-4-NA, US
AS306 DNIC-ASBLK-00306-00371, US
AS33 HPINC, US
AS4185 ATTIS-ASN4185, US
AS4186 ATTIS-ASN4186, US
AS4473 ATTIS-ASN4473, US
Downstream Adjacent AS list
AS8034 WORLDNET5-10, US
AS8035 WORLDNET5-10, US
AS14298 EPA-NET, US
AS10616 NTIS, US
AS8076 HUD, US
AS2576 DOT-AS, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 2681 AS13979 ORG+TRN Originate: 81920 /15.68 Transit: 568576 /12.88 ATT-IPFR, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 33549 AS13979 ATT-IPFR, US 2 0 0 2 0 0.00% Prefix AS Path Aggregation Suggestion 15.12.64.0/18 7018 33 13979 55.224.0.0/16 57866 3356 721 721 27064 367 306 13979 13979
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS13979 24 More Specifics 26 Total Advertisements ATT-IPFR, US
15.0.0.0/23 15.0.0.0/10
15.0.64.0/18 15.0.0.0/10
15.4.64.0/18 15.0.0.0/10
15.8.64.0/18 15.0.0.0/10
15.12.64.0/18 15.0.0.0/10
15.98.64.0/18 15.96.0.0/14
16.0.37.0/24 16.0.0.0/15
16.0.48.0/22 16.0.0.0/15
16.0.52.0/22 16.0.0.0/15
16.0.57.0/24 16.0.0.0/15
16.0.58.0/24 16.0.0.0/15
16.1.96.0/20 16.0.0.0/15
16.1.112.0/21 16.0.0.0/15
16.1.120.0/24 16.0.0.0/15
16.1.121.0/24 16.0.0.0/15
16.103.138.0/23 16.103.0.0/16
16.105.108.0/22 16.105.0.0/16
16.143.29.0/24 16.143.0.0/16
16.172.64.0/21 16.172.0.0/15
16.172.72.0/22 16.172.0.0/15
55.22.82.0/24 55.0.0.0/8
55.22.144.0/24 55.0.0.0/8
55.22.176.0/24 55.0.0.0/8
204.228.182.0/24 204.228.176.0/20
55.22.94.0/24 55.0.0.0/8
55.22.130.0/24 55.0.0.0/8
132.85.48.0/21 132.84.0.0/15
132.85.198.0/24 132.84.0.0/15
132.85.253.0/24 132.84.0.0/15
132.111.12.0/24 132.110.0.0/15
132.111.48.0/21 132.110.0.0/15
132.111.200.0/24 132.110.0.0/15
132.111.242.0/24 132.110.0.0/15
132.111.253.0/24 132.110.0.0/15
132.122.40.0/21 132.120.0.0/13
132.122.241.0/24 132.120.0.0/13
132.142.135.0/24 132.136.0.0/13
137.164.35.12/30 137.164.0.0/16
192.46.108.0/24 192.46.108.0/23
198.152.17.0/24 198.152.0.0/16
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 16.0.37.0/24 Announced
+ 16.0.48.0/22 Announced
+ 16.0.52.0/22 Announced
+ 16.0.57.0/24 Announced
+ 16.0.58.0/24 Announced
+ 16.1.96.0/20 Announced
+ 16.1.112.0/21 Announced
+ 16.1.120.0/24 Announced
+ 16.1.121.0/24 Announced
+ 16.103.138.0/23 Announced
+ 16.105.108.0/22 Announced
+ 16.143.29.0/24 Announced
+ 16.172.64.0/21 Announced
+ 16.172.72.0/22 Announced
+ 55.22.82.0/24 Announced
- 55.22.94.0/24 Withdrawn
- 55.22.130.0/24 Withdrawn
- 132.85.48.0/21 Withdrawn
- 132.85.198.0/24 Withdrawn
- 132.85.253.0/24 Withdrawn
- 132.111.12.0/24 Withdrawn
- 132.111.48.0/21 Withdrawn
- 132.111.200.0/24 Withdrawn
- 132.111.242.0/24 Withdrawn
- 132.111.253.0/24 Withdrawn
- 132.122.40.0/21 Withdrawn
- 132.122.241.0/24 Withdrawn
- 132.142.135.0/24 Withdrawn
- 137.164.35.12/30 Withdrawn
- 192.46.108.0/24 Withdrawn
- 198.152.17.0/24 Withdrawn
whois: 402603
IANA has recorded AS13979 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS13979\n
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
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# If you see inaccuracies in the results, please report at
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 13979
ASName: ATT-IPFR
ASHandle: AS13979
RegDate: 1999-09-28
Updated: 2025-03-18
Ref: https://rdap.arin.net/registry/autnum/13979
OrgName: AT&T Enterprises, LLC
OrgId: AEL-360
Address: 208 S. Akard St.
City: Dallas
StateProv: TX
PostalCode: 75202
Country: US
RegDate: 2024-11-22
Updated: 2026-06-05
Ref: https://rdap.arin.net/registry/entity/AEL-360
OrgAbuseHandle: ABUSE7-ARIN
OrgAbuseName: abuse
OrgAbusePhone: +1-919-319-8167
OrgAbuseEmail: abuse@att.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE7-ARIN
OrgRoutingHandle: ROUTI59-ARIN
OrgRoutingName: Routing POC
OrgRoutingPhone: +1-999-999-9999
OrgRoutingEmail: routing_poc@att.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/ROUTI59-ARIN
OrgTechHandle: ICC-ARIN
OrgTechName: IP Team
OrgTechPhone: +1-888-876-2382
OrgTechEmail: rm-ipspecialist@att.com
OrgTechRef: https://rdap.arin.net/registry/entity/ICC-ARIN
OrgTechHandle: ZS44-ARIN
OrgTechName: IPAdmin-ATT Internet Services
OrgTechPhone: +1-888-510-5545
OrgTechEmail: ipadmin@semail.att.com
OrgTechRef: https://rdap.arin.net/registry/entity/ZS44-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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