[REN-BGP-stats-all] IPv4 R&E Routing Table Report - TENET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Tue Mar 18 18:30:40 UTC 2025
IPv4 R&E Routing Table Report 18:30 GMT Tue 18 Mar, 2025
IPv4 BGP Table (R&E) as seen at TENET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/TENET/
Analysis Summary
----------------
BGP routing table entries examined: 16480
Prefixes after maximum aggregation (per Origin AS): 8441
Deaggregation factor: 1.95
Unique aggregates announced (without unneeded subnets): 9631
Number of IPv4 prefixes with a valid ROA: 6100
Number of IPv4 prefixes with an invalid ROA: 2
Number of IPv4 prefixes with no ROA: 10378
Total ASes present in the Internet Routing Table: 2287
Prefixes per ASN: 7.21
Origin-only ASes present in the Internet Routing Table: 2002
Origin ASes announcing only one prefix: 845
Transit ASes present in the Internet Routing Table: 285
Transit-only ASes present in the Internet Routing Table: 55
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 15
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 46144
Number of 32-bit ASNs visible in the Routing Table: 564
Prefixes from 32-bit ASNs in the Routing Table: 1576
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 158125824
Equivalent to 9 /8s, 108 /16s and 207 /24s
Percentage of available address space announced: 4.3
Percentage of allocated address space announced: 4.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 1756
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4852
Total APNIC prefixes after maximum aggregation: 2312
APNIC Deaggregation factor: 2.10
Prefixes being announced from the APNIC address blocks: 4851
Unique aggregates announced from the APNIC address blocks: 2665
APNIC Region origin ASes present in the Internet Routing Table: 595
APNIC Prefixes per ASN: 8.15
APNIC Region origin ASes announcing only one prefix: 247
APNIC Region transit ASes present in the Internet Routing Table: 53
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 240
Number of APNIC addresses announced to Internet: 45585920
Equivalent to 2 /8s, 183 /16s and 150 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-155961
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 8191
Total ARIN prefixes after maximum aggregation: 4836
ARIN Deaggregation factor: 1.69
Prefixes being announced from the ARIN address blocks: 8200
Unique aggregates announced from the ARIN address blocks: 5403
ARIN Region origin ASes present in the Internet Routing Table: 1274
ARIN Prefixes per ASN: 6.44
ARIN Region origin ASes announcing only one prefix: 452
ARIN Region transit ASes present in the Internet Routing Table: 160
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 218
Number of ARIN addresses announced to Internet: 92233728
Equivalent to 5 /8s, 127 /16s and 96 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-402332
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8,
67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8,
74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8,
100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8,
131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8,
139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8,
148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8,
159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8,
167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8,
184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8,
207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 848
Total RIPE prefixes after maximum aggregation: 601
RIPE Deaggregation factor: 1.41
Prefixes being announced from the RIPE address blocks: 842
Unique aggregates announced from the RIPE address blocks: 649
RIPE Region origin ASes present in the Internet Routing Table: 176
RIPE Prefixes per ASN: 4.78
RIPE Region origin ASes announcing only one prefix: 76
RIPE Region transit ASes present in the Internet Routing Table: 24
Average RIPE Region AS path length visible: 4.5
Max RIPE Region AS path length visible: 11
Number of RIPE region 32-bit ASNs visible in the Routing Table: 29
Number of RIPE addresses announced to Internet: 13777408
Equivalent to 0 /8s, 210 /16s and 58 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8,
81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8,
88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8,
95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8,
185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8,
217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 1498
Total LACNIC prefixes after maximum aggregation: 553
LACNIC Deaggregation factor: 2.71
Prefixes being announced from the LACNIC address blocks: 1495
Unique aggregates announced from the LACNIC address blocks: 725
LACNIC Region origin ASes present in the Internet Routing Table: 165
LACNIC Prefixes per ASN: 9.06
LACNIC Region origin ASes announcing only one prefix: 62
LACNIC Region transit ASes present in the Internet Routing Table: 27
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 69
Number of LACNIC addresses announced to Internet: 4267520
Equivalent to 0 /8s, 65 /16s and 30 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1090
Total AfriNIC prefixes after maximum aggregation: 138
AfriNIC Deaggregation factor: 7.90
Prefixes being announced from the AfriNIC address blocks: 1090
Unique aggregates announced from the AfriNIC address blocks: 187
AfriNIC Region origin ASes present in the Internet Routing Table: 21
AfriNIC Prefixes per ASN: 51.90
AfriNIC Region origin ASes announcing only one prefix: 8
AfriNIC Region transit ASes present in the Internet Routing Table: 6
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8
Number of AfriNIC addresses announced to Internet: 2260736
Equivalent to 0 /8s, 34 /16s and 127 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 624 2170 464 SINET-AS Research Organization of Informa
7497 452 180 24 CSTNET-AS-AP Computer Network Information
4538 195 4192 73 ERX-CERNET-BKB China Education and Resear
1237 193 74 147 KREONET-AS-KR KISTI, KR
58647 183 18 2 KAGAWAU-AS Kagawa University, JP
7575 174 297 117 AARNET-AS-AP Australian Academic and Rese
55824 147 19 21 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 68 37 9 UNINET-AS-AP UNINET-, TH
1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
668 212 647 180 DNIC-AS-00668, US
376 201 162 151 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
2920 173 34 7 LACOE, US
2152 149 507 97 CENIC-2152, US
18558 139 18 4 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
270 117 328 81 AS270, US
23024 99 7 17 OCDE, US
21976 90 34 16 NJEDGE-NET, US
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8895 108 24 5 ISU Internet Services Unit ISU, SA
1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL
3267 79 29 69 NIKS, RU
1653 50 150 48 SUNET SUNET Swedish University Network, E
1741 39 149 18 FUNETAS, FI
3218 39 3 24 COSMOS-3218-AS AS-COSMOS root, RU
8674 16 2 11 NETNOD-IX Netnod AB, SE
1880 14 1 7 STUPI, SE
224 13 256 13 UNINETT UNINETT, The Norwegian University
1101 12 465 12 IP-EEND-AS IP-EEND BV, NL
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 236 178 41 Rede Nacional de Ensino e Pesquisa, BR
28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 53 16 1 Red de Interconexion Universitaria, AR
61468 52 3 21 CEDIA, EC
2715 51 100 35 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 550 82 3 KENET-AS, KE
2018 374 318 69 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 35 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
327700 10 16 1 MoRENet, MZ
37654 9 1 6 RwEdNet-AS, RW
36982 8 33 8 UCT, ZA
327798 4 0 3 BERNET, BI
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 624 2170 464 SINET-AS Research Organization of Informa
36914 550 82 3 KENET-AS, KE
7497 452 180 24 CSTNET-AS-AP Computer Network Information
2018 374 318 69 TENET-1, ZA
1916 236 178 41 Rede Nacional de Ensino e Pesquisa, BR
668 212 647 180 DNIC-AS-00668, US
376 201 162 151 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
4538 195 4192 73 ERX-CERNET-BKB China Education and Resear
1237 193 74 147 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 550 547 KENET-AS, KE
7497 452 428 CSTNET-AS-AP Computer Network Information Cente
2018 374 305 TENET-1, ZA
5786 199 198 UPRENET, PR
1916 236 195 Rede Nacional de Ensino e Pesquisa, BR
58647 183 181 KAGAWAU-AS Kagawa University, JP
2920 173 166 LACOE, US
18558 139 135 NETBLK-RCOEK, US
55824 147 126 NKN-CORE-NW NKN Core Network, IN
4538 195 122 ERX-CERNET-BKB China Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/TENET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/TENET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/TENET/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:1 /11:1 /12:10
/13:18 /14:30 /15:87 /16:1475 /17:360 /18:410
/19:490 /20:741 /21:693 /22:1127 /23:1286 /24:9750
/25:0 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 526 550 KENET-AS, KE
8895 105 108 ISU Internet Services Unit ISU, SA
23024 38 99 OCDE, US
3267 35 79 NIKS, RU
32440 33 57 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
37215 29 35 MAREN, MW
Complete listing at https://bgp.nsrc.org/REN/TENET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 4:2 6:4 8:2 12:2 14:93
23:9 24:3 35:14 38:11 40:1 41:221
42:18 44:3 45:42 47:1 49:12 50:2
52:1 58:15 59:20 60:6 61:3 62:3
63:32 64:42 65:5 66:41 67:39 68:10
69:16 70:2 71:1 72:8 74:48 76:34
77:8 80:4 82:3 83:1 84:1 85:19
86:5 87:1 89:1 91:6 92:2 93:1
96:5 97:1 98:2 101:3 102:2 103:356
104:79 108:10 109:4 111:21 113:1 114:24
116:9 117:61 118:34 119:30 121:28 122:8
123:8 124:42 125:5 128:55 129:30 130:96
131:58 132:66 133:157 134:107 136:200 137:46
138:58 139:5 140:33 141:3 142:27 143:24
144:25 146:135 147:54 148:191 149:11 150:69
151:9 152:138 153:3 154:37 155:84 156:129
157:27 158:29 159:116 160:34 161:16 162:25
163:62 164:11 165:48 167:14 168:119 169:7
170:95 171:1 172:2 173:6 175:16 177:6
179:12 180:16 181:1 182:12 184:7 185:14
186:3 187:24 188:3 189:5 190:33 191:13
192:1104 193:63 194:54 195:30 196:145 197:335
198:483 199:280 200:337 201:38 202:636 203:438
204:374 205:138 206:212 207:224 208:65 209:118
210:223 211:4 212:104 214:10 216:91 218:23
219:6 220:16 222:4 223:15
End of report
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