[REN-BGP-stats-all] IPv4 R&E Routing Table Report - WACREN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Fri Mar 28 18:10:44 UTC 2025
IPv4 R&E Routing Table Report 18:10 GMT Fri 28 Mar, 2025
IPv4 BGP Table (R&E) as seen at WACREN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/WACREN/
Analysis Summary
----------------
BGP routing table entries examined: 18909
Prefixes after maximum aggregation (per Origin AS): 10389
Deaggregation factor: 1.82
Unique aggregates announced (without unneeded subnets): 11507
Number of IPv4 prefixes with a valid ROA: 7569
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 11333
Total ASes present in the Internet Routing Table: 2759
Prefixes per ASN: 6.85
Origin-only ASes present in the Internet Routing Table: 2398
Origin ASes announcing only one prefix: 1064
Transit ASes present in the Internet Routing Table: 361
Transit-only ASes present in the Internet Routing Table: 63
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 18
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: 46107
Number of 32-bit ASNs visible in the Routing Table: 697
Prefixes from 32-bit ASNs in the Routing Table: 1876
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: 3
Number of addresses announced to Internet: 197284944
Equivalent to 11 /8s, 194 /16s and 84 /24s
Percentage of available address space announced: 5.3
Percentage of allocated address space announced: 5.3
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: 2345
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4914
Total APNIC prefixes after maximum aggregation: 2318
APNIC Deaggregation factor: 2.12
Prefixes being announced from the APNIC address blocks: 4913
Unique aggregates announced from the APNIC address blocks: 2652
APNIC Region origin ASes present in the Internet Routing Table: 599
APNIC Prefixes per ASN: 8.20
APNIC Region origin ASes announcing only one prefix: 249
APNIC Region transit ASes present in the Internet Routing Table: 50
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 241
Number of APNIC addresses announced to Internet: 45586240
Equivalent to 2 /8s, 183 /16s and 151 /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: 7852
Total ARIN prefixes after maximum aggregation: 4519
ARIN Deaggregation factor: 1.74
Prefixes being announced from the ARIN address blocks: 7866
Unique aggregates announced from the ARIN address blocks: 5007
ARIN Region origin ASes present in the Internet Routing Table: 1254
ARIN Prefixes per ASN: 6.27
ARIN Region origin ASes announcing only one prefix: 443
ARIN Region transit ASes present in the Internet Routing Table: 159
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 18
Number of ARIN region 32-bit ASNs visible in the Routing Table: 215
Number of ARIN addresses announced to Internet: 87195456
Equivalent to 5 /8s, 50 /16s and 127 /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: 3627
Total RIPE prefixes after maximum aggregation: 2885
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 3613
Unique aggregates announced from the RIPE address blocks: 2938
RIPE Region origin ASes present in the Internet Routing Table: 656
RIPE Prefixes per ASN: 5.51
RIPE Region origin ASes announcing only one prefix: 285
RIPE Region transit ASes present in the Internet Routing Table: 104
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 16
Number of RIPE region 32-bit ASNs visible in the Routing Table: 150
Number of RIPE addresses announced to Internet: 58037648
Equivalent to 3 /8s, 117 /16s and 149 /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: 1362
Total LACNIC prefixes after maximum aggregation: 491
LACNIC Deaggregation factor: 2.77
Prefixes being announced from the LACNIC address blocks: 1362
Unique aggregates announced from the LACNIC address blocks: 675
LACNIC Region origin ASes present in the Internet Routing Table: 135
LACNIC Prefixes per ASN: 10.09
LACNIC Region origin ASes announcing only one prefix: 57
LACNIC Region transit ASes present in the Internet Routing Table: 22
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: 61
Number of LACNIC addresses announced to Internet: 4085056
Equivalent to 0 /8s, 62 /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: 1153
Total AfriNIC prefixes after maximum aggregation: 175
AfriNIC Deaggregation factor: 6.59
Prefixes being announced from the AfriNIC address blocks: 1152
Unique aggregates announced from the AfriNIC address blocks: 232
AfriNIC Region origin ASes present in the Internet Routing Table: 51
AfriNIC Prefixes per ASN: 22.59
AfriNIC Region origin ASes announcing only one prefix: 30
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2377984
Equivalent to 0 /8s, 36 /16s and 73 /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 639 2170 465 SINET-AS Research Organization of Informa
7497 452 180 24 CSTNET-AS-AP Computer Network Information
1237 196 74 146 KREONET-AS-KR KISTI, KR
4538 196 4192 73 ERX-CERNET-BKB China Education and Resear
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 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/WACREN/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
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
23024 99 7 17 OCDE, US
21976 90 34 16 NJEDGE-NET, US
237 85 542 51 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
786 196 1750 188 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 108 24 5 ISU Internet Services Unit ISU, SA
1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL
2614 89 26 69 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
3267 80 29 70 NIKS, RU
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 75 366 75 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 311 178 43 Rede Nacional de Ensino e Pesquisa, BR
28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M
11340 110 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
2715 52 100 36 Fundacao Carlos Chagas Filho de Amparo a
61468 52 3 21 CEDIA, EC
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
3596 40 8 4 Universidad Autonoma Metropolitana, MX
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/WACREN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 547 82 3 KENET-AS, KE
2018 374 318 69 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 34 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 14 9 6 NRaE1-AS, NG
30983 12 4 2 MARWAN-AS, MA
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 639 2170 465 SINET-AS Research Organization of Informa
36914 547 82 3 KENET-AS, KE
7497 452 180 24 CSTNET-AS-AP Computer Network Information
2018 374 318 69 TENET-1, ZA
1916 311 178 43 Rede Nacional de Ensino e Pesquisa, BR
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
376 201 162 151 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
786 196 1750 188 JANET Jisc Services Limited, GB
1237 196 74 146 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 547 544 KENET-AS, KE
7497 452 428 CSTNET-AS-AP Computer Network Information Cente
2018 374 305 TENET-1, ZA
1916 311 268 Rede Nacional de Ensino e Pesquisa, BR
5786 199 198 UPRENET, PR
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 196 123 ERX-CERNET-BKB China Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/WACREN/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/WACREN/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
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/WACREN/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 /16:1945 /17:408 /18:451
/19:571 /20:833 /21:848 /22:1403 /23:1516 /24:10556
/25:61 /26:75 /27:35 /28:3 /29:14 /30:5
/31:0 /32:3
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 523 547 KENET-AS, KE
8895 105 108 ISU Internet Services Unit ISU, SA
1916 75 311 Rede Nacional de Ensino e Pesquisa, BR
23024 38 99 OCDE, US
3267 36 80 NIKS, RU
32440 33 57 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 57 SEAP-AGE, ES
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/WACREN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 8:2 12:2 14:93 23:8
24:3 31:1 35:9 37:8 38:11 40:1
41:218 42:18 44:4 45:46 46:4 47:1
49:8 50:2 52:1 58:15 59:20 60:6
61:3 62:8 63:32 64:43 65:5 66:42
67:39 68:10 69:16 70:2 71:1 72:8
74:54 76:34 77:10 78:3 79:9 80:13
81:24 82:6 83:8 84:5 85:51 86:5
87:1 89:9 91:41 92:2 93:14 94:2
95:2 96:5 97:1 98:2 101:3 102:12
103:361 104:79 108:8 109:6 111:21 113:1
114:24 116:9 117:61 118:34 119:30 121:28
122:8 123:8 124:42 125:5 128:57 129:41
130:97 131:63 132:66 133:157 134:105 136:200
137:51 138:58 139:11 140:31 141:4 142:26
143:25 144:25 145:2 146:137 147:59 148:198
149:11 150:69 151:11 152:138 153:15 154:47
155:84 156:135 157:27 158:29 159:117 160:34
161:16 162:23 163:60 164:13 165:47 167:13
168:103 169:7 170:21 171:2 172:2 173:5
175:16 177:7 179:13 180:16 181:1 182:12
184:7 185:50 186:3 187:24 188:14 189:3
190:17 191:13 192:1395 193:303 194:141 195:82
196:149 197:336 198:451 199:247 200:295 201:38
202:635 203:437 204:366 205:131 206:207 207:221
208:67 209:115 210:224 211:4 212:144 213:4
216:92 217:21 218:23 219:6 220:17 222:4
223:15
End of report
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