19957 TENNESSEE-NET, US
Adjacency: 3 Upstream: 2 Downstream: 1
Upstream Adjacent AS list
AS7018 ATT-INTERNET4, US
AS16473 TNII, US
Downstream Adjacent AS list
AS16989 UTMEM, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 767 AS19957 ORG+TRN Originate: 420352 /13.32 Transit: 131328 /15.00 TENNESSEE-NET, 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 % 3342 AS19957 TENNESSEE-NET, US 42 21 5 26 16 38.10% Prefix AS Path Aggregation Suggestion 12.204.192.0/19 7018 19957 19957 19957 19957 + Announce - aggregate of 12.204.192.0/20 (7018 19957 19957 19957 19957) and 12.204.208.0/20 (7018 19957 19957 19957 19957) 12.204.192.0/20 7018 19957 19957 19957 19957 - Withdrawn - aggregated with 12.204.208.0/20 (7018 19957 19957 19957 19957) 12.204.201.0/24 7018 19957 19957 12.204.206.0/24 7018 19957 19957 12.204.208.0/20 7018 19957 19957 19957 19957 - Withdrawn - aggregated with 12.204.192.0/20 (7018 19957 19957 19957 19957) 12.204.208.0/23 7018 19957 19957 + Announce - aggregate of 12.204.208.0/24 (7018 19957 19957) and 12.204.209.0/24 (7018 19957 19957) 12.204.208.0/24 7018 19957 19957 - Withdrawn - aggregated with 12.204.209.0/24 (7018 19957 19957) 12.204.209.0/24 7018 19957 19957 - Withdrawn - aggregated with 12.204.208.0/24 (7018 19957 19957) 12.204.216.0/21 7018 19957 19957 64.79.176.0/21 7018 19957 19957 66.4.0.0/16 7018 19957 19957 66.4.8.0/23 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.9.0/24 7018 19957 66.4.14.0/23 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.16.0/22 7018 19957 + Announce - aggregate of 66.4.16.0/23 (7018 19957) and 66.4.18.0/23 (7018 19957) 66.4.16.0/23 7018 19957 - Withdrawn - aggregated with 66.4.18.0/23 (7018 19957) 66.4.18.0/23 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.18.0/24 7018 19957 - Withdrawn - aggregated with 66.4.19.0/24 (7018 19957) 66.4.19.0/24 7018 19957 - Withdrawn - aggregated with 66.4.18.0/24 (7018 19957) 66.4.27.0/24 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.28.0/22 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.32.0/23 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.38.0/24 7018 19957 66.4.40.0/24 7018 19957 66.4.60.0/23 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.78.0/24 7018 19957 66.4.81.0/24 7018 19957 66.4.124.0/24 7018 19957 19957 - Withdrawn - matching aggregate 66.4.0.0/16 7018 19957 19957 66.4.126.0/24 7018 19957 70.150.21.0/24 7018 19957 19957 70.150.247.0/24 7018 19957 19957 72.158.184.0/24 7018 19957 19957 72.159.76.0/24 7018 19957 19957 170.141.56.0/23 7018 19957 19957 170.141.60.0/23 7018 19957 19957 170.142.0.0/15 7018 19957 19957 + Announce - aggregate of 170.142.0.0/16 (7018 19957 19957) and 170.143.0.0/16 (7018 19957 19957) 170.142.0.0/16 7018 19957 19957 - Withdrawn - aggregated with 170.143.0.0/16 (7018 19957 19957) 170.143.0.0/16 7018 19957 19957 - Withdrawn - aggregated with 170.142.0.0/16 (7018 19957 19957) 198.146.0.0/16 7018 19957 19957 206.23.0.0/16 7018 19957 19957 208.63.128.0/20 7018 19957 19957 19957 19957 208.63.128.0/23 7018 19957 19957 + Announce - aggregate of 208.63.128.0/24 (7018 19957 19957) and 208.63.129.0/24 (7018 19957 19957) 208.63.128.0/24 7018 19957 19957 - Withdrawn - aggregated with 208.63.129.0/24 (7018 19957 19957) 208.63.129.0/24 7018 19957 19957 - Withdrawn - aggregated with 208.63.128.0/24 (7018 19957 19957) 208.182.0.0/16 7018 19957 19957 208.182.101.0/24 7018 19957 19957 - Withdrawn - matching aggregate 208.182.0.0/16 7018 19957 19957 208.182.124.0/24 7018 19957 19957 - Withdrawn - matching aggregate 208.182.0.0/16 7018 19957 19957
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS19957 43 More Specifics 47 Total Advertisements TENNESSEE-NET, US
12.204.201.0/24 12.0.0.0/8
12.204.202.0/24 12.0.0.0/8
12.204.205.0/24 12.0.0.0/8
12.204.206.0/24 12.0.0.0/8
12.204.208.0/24 12.0.0.0/8
12.204.209.0/24 12.0.0.0/8
12.204.216.0/21 12.0.0.0/8
64.79.176.0/21 64.79.176.0/20
64.79.184.0/21 64.79.176.0/20
66.4.0.0/16 66.4.0.0/15
66.4.8.0/23 66.4.0.0/15
66.4.9.0/24 66.4.0.0/15
66.4.14.0/23 66.4.0.0/15
66.4.16.0/23 66.4.0.0/15
66.4.18.0/23 66.4.0.0/15
66.4.18.0/24 66.4.0.0/15
66.4.19.0/24 66.4.0.0/15
66.4.22.0/23 66.4.0.0/15
66.4.27.0/24 66.4.0.0/15
66.4.28.0/22 66.4.0.0/15
66.4.32.0/23 66.4.0.0/15
66.4.34.0/23 66.4.0.0/15
66.4.38.0/24 66.4.0.0/15
66.4.40.0/24 66.4.0.0/15
66.4.60.0/23 66.4.0.0/15
66.4.78.0/24 66.4.0.0/15
66.4.81.0/24 66.4.0.0/15
66.4.124.0/24 66.4.0.0/15
66.4.126.0/24 66.4.0.0/15
70.150.21.0/24 70.144.0.0/13
70.150.247.0/24 70.144.0.0/13
72.158.184.0/24 72.156.0.0/14
72.159.76.0/24 72.156.0.0/14
170.141.56.0/23 170.141.0.0/16
170.141.60.0/23 170.141.0.0/16
170.142.0.0/16 170.142.0.0/15
170.143.0.0/16 170.142.0.0/15
170.190.40.0/22 170.190.0.0/16
208.63.128.0/24 208.60.0.0/14
208.63.129.0/24 208.60.0.0/14
208.182.0.0/16 208.182.0.0/15
208.182.101.0/24 208.182.0.0/15
208.182.124.0/24 208.182.0.0/15
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 66.4.22.0/23 Announced
+ 170.178.136.0/22 Announced
+ 170.190.40.0/22 Announced
whois: 402590
IANA has recorded AS19957 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS19957\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: 19957
ASName: STATE-OF-TENNESSEE-NETTN
ASHandle: AS19957
RegDate: 2003-03-05
Updated: 2025-02-12
Ref: https://rdap.arin.net/registry/autnum/19957
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: 2025-10-29
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/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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