[REN-BGP-stats-all] IPv4 R&E Routing Table Report - KENET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Sat May 31 18:35:48 UTC 2025
IPv4 R&E Routing Table Report 18:35 GMT Sat 31 May, 2025
IPv4 BGP Table (R&E) as seen at KENET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/KENET/
Analysis Summary
----------------
BGP routing table entries examined: 17108
Prefixes after maximum aggregation (per Origin AS): 9455
Deaggregation factor: 1.81
Unique aggregates announced (without unneeded subnets): 10355
Number of IPv4 prefixes with a valid ROA: 6798
Number of IPv4 prefixes with an invalid ROA: 5
Number of IPv4 prefixes with no ROA: 10305
Total ASes present in the Internet Routing Table: 2540
Prefixes per ASN: 6.74
Origin-only ASes present in the Internet Routing Table: 2215
Origin ASes announcing only one prefix: 979
Transit ASes present in the Internet Routing Table: 325
Transit-only ASes present in the Internet Routing Table: 50
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 5.1
Max AS path length visible: 16
Max AS path prepend of ASN ( 10497) 11
Prefixes from unregistered ASNs in the Routing Table: 33
Number of instances of unregistered ASNs: 33
Number of 32-bit ASNs allocated by the RIRs: 46546
Number of 32-bit ASNs visible in the Routing Table: 643
Prefixes from 32-bit ASNs in the Routing Table: 1695
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: 190297600
Equivalent to 11 /8s, 87 /16s and 182 /24s
Percentage of available address space announced: 5.1
Percentage of allocated address space announced: 5.1
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: 2086
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4824
Total APNIC prefixes after maximum aggregation: 2318
APNIC Deaggregation factor: 2.08
Prefixes being announced from the APNIC address blocks: 4822
Unique aggregates announced from the APNIC address blocks: 2668
APNIC Region origin ASes present in the Internet Routing Table: 608
APNIC Prefixes per ASN: 7.93
APNIC Region origin ASes announcing only one prefix: 254
APNIC Region transit ASes present in the Internet Routing Table: 51
Average APNIC Region AS path length visible: 5.6
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 246
Number of APNIC addresses announced to Internet: 45585664
Equivalent to 2 /8s, 183 /16s and 149 /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: 6581
Total ARIN prefixes after maximum aggregation: 3696
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 6630
Unique aggregates announced from the ARIN address blocks: 4017
ARIN Region origin ASes present in the Internet Routing Table: 1090
ARIN Prefixes per ASN: 6.08
ARIN Region origin ASes announcing only one prefix: 381
ARIN Region transit ASes present in the Internet Routing Table: 133
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 186
Number of ARIN addresses announced to Internet: 81213184
Equivalent to 4 /8s, 215 /16s and 55 /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: 3602
Total RIPE prefixes after maximum aggregation: 2890
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3587
Unique aggregates announced from the RIPE address blocks: 2930
RIPE Region origin ASes present in the Internet Routing Table: 659
RIPE Prefixes per ASN: 5.44
RIPE Region origin ASes announcing only one prefix: 290
RIPE Region transit ASes present in the Internet Routing Table: 106
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 16
Number of RIPE region 32-bit ASNs visible in the Routing Table: 152
Number of RIPE addresses announced to Internet: 57945600
Equivalent to 3 /8s, 116 /16s and 46 /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: 1105
Total LACNIC prefixes after maximum aggregation: 404
LACNIC Deaggregation factor: 2.74
Prefixes being announced from the LACNIC address blocks: 1104
Unique aggregates announced from the LACNIC address blocks: 501
LACNIC Region origin ASes present in the Internet Routing Table: 121
LACNIC Prefixes per ASN: 9.12
LACNIC Region origin ASes announcing only one prefix: 50
LACNIC Region transit ASes present in the Internet Routing Table: 18
Average LACNIC Region AS path length visible: 5.5
Max LACNIC Region AS path length visible: 11
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 55
Number of LACNIC addresses announced to Internet: 3888384
Equivalent to 0 /8s, 59 /16s and 85 /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: 963
Total AfriNIC prefixes after maximum aggregation: 142
AfriNIC Deaggregation factor: 6.78
Prefixes being announced from the AfriNIC address blocks: 963
Unique aggregates announced from the AfriNIC address blocks: 237
AfriNIC Region origin ASes present in the Internet Routing Table: 10
AfriNIC Prefixes per ASN: 96.30
AfriNIC Region origin ASes announcing only one prefix: 4
AfriNIC Region transit ASes present in the Internet Routing Table: 4
Average AfriNIC Region AS path length visible: 1.9
Max AfriNIC Region AS path length visible: 5
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 1664256
Equivalent to 0 /8s, 25 /16s and 101 /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 595 2170 464 SINET-AS Research Organization of Informa
7497 456 180 24 CSTNET-AS-AP Computer Network Information
4538 196 4192 72 ERX-CERNET-BKB China Education and Resear
1237 193 74 146 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 281 116 AARNET-AS-AP Australian Academic and Rese
55824 148 19 21 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 67 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/KENET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
5786 199 16 1 UPRENET, PR
2920 176 34 7 LACOE, US
2152 147 507 97 CENIC-2152, US
18558 139 18 4 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
23024 97 7 21 OCDE, US
21976 90 34 16 NJEDGE-NET, US
237 85 542 51 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
3477 74 63 37 NOAA-NWAVE, US
Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 250 DFN Verein zur Foerderung eines Deutschen
786 194 1742 187 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 109 24 5 ISU Internet Services Unit ISU, SA
1103 97 1727 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 92 26 69 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 75 366 75 BELWUE BelWue-Koordination, DE
3267 75 29 69 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 242 178 41 Rede Nacional de Ensino e Pesquisa, BR
11340 110 25 52 Red Universitaria Nacional, CL
271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
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
3596 37 8 4 Universidad Autonoma Metropolitana, MX
21612 27 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR
Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 551 80 56 KENET-AS, KE
2018 373 318 69 TENET-1, ZA
6879 24 2 9 ENSTINET-, EG
30983 4 4 1 MARWAN-AS, MA
329522 4 1 2 SANSA, ZA
328225 3 0 1 Strathmore-University, KE
3208 1 2 1 ARN, DZ
6149 1 0 1 TENET-2, ZA
327945 1 0 1 ILRI, KE
329418 1 0 1 International-Centre-Research-Agroforestr
Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 595 2170 464 SINET-AS Research Organization of Informa
36914 551 80 56 KENET-AS, KE
7497 456 180 24 CSTNET-AS-AP Computer Network Information
2018 373 318 69 TENET-1, ZA
680 284 1899 250 DFN Verein zur Foerderung eines Deutschen
1916 242 178 41 Rede Nacional de Ensino e Pesquisa, BR
5786 199 16 1 UPRENET, PR
4538 196 4192 72 ERX-CERNET-BKB China Education and Resear
786 194 1742 187 JANET Jisc Services Limited, GB
1237 193 74 146 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 551 495 KENET-AS, KE
7497 456 432 CSTNET-AS-AP Computer Network Information Cente
2018 373 304 TENET-1, ZA
1916 242 201 Rede Nacional de Ensino e Pesquisa, BR
5786 199 198 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 176 169 LACOE, US
18558 139 135 NETBLK-RCOEK, US
55824 148 127 NKN-CORE-NW NKN Core Network, IN
4538 196 124 ERX-CERNET-BKB China Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/KENET/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
26898 UNALLOCATED 131.187.248.0/22 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.248.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.249.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.250.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.251.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 198.30.187.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/20 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.81.0/24 3112 OARNET-AS-1, US
Complete listing at https://bgp.nsrc.org/REN/KENET/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/KENET/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 /12:11
/13:19 /14:35 /15:114 /16:1853 /17:396 /18:424
/19:545 /20:781 /21:791 /22:1298 /23:1402 /24:9436
/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 528 551 KENET-AS, KE
8895 106 109 ISU Internet Services Unit ISU, SA
23024 38 97 OCDE, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
3267 31 75 NIKS, RU
32440 31 56 LONI, US
200521 31 56 SEAP-AGE, ES
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/KENET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:16 8:2 12:2 14:93 23:8
24:3 31:1 35:10 37:9 38:10 40:1
41:185 42:18 44:5 45:45 46:5 47:1
49:12 50:2 52:1 58:16 59:20 60:6
61:3 62:8 63:32 64:43 65:5 66:39
67:39 68:12 69:17 70:2 71:1 72:8
74:54 76:34 77:9 78:3 79:9 80:13
81:11 82:6 83:8 84:4 85:51 86:6
87:1 89:10 91:41 92:2 93:15 94:2
95:2 97:1 98:2 101:3 102:1 103:370
104:76 108:8 109:4 110:1 111:20 113:1
114:24 116:9 117:61 118:35 119:31 121:28
122:8 123:8 124:42 125:5 128:55 129:40
130:96 131:42 132:58 133:156 134:100 136:200
137:53 138:10 139:4 140:31 141:4 143:20
144:29 145:2 146:137 147:51 148:41 149:12
150:37 151:11 152:138 153:15 154:24 155:84
156:133 157:26 158:28 159:116 160:34 161:19
162:21 163:63 164:10 165:42 167:6 168:103
169:6 170:19 171:1 172:2 173:6 175:16
177:5 179:12 180:16 181:1 182:12 184:7
185:50 186:3 187:25 188:15 189:3 190:17
191:13 192:1292 193:298 194:145 195:82 196:137
197:336 198:291 199:138 200:298 201:37 202:629
203:431 204:321 205:60 206:120 207:157 208:61
209:96 210:210 211:4 212:147 213:4 216:72
217:22 218:23 219:7 220:16 222:4 223:17
End of report
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