[REN-BGP-stats-all] IPv4 R&E Routing Table Report - GEANT (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Mon Apr 28 17:00:47 UTC 2025
IPv4 R&E Routing Table Report 17:00 GMT Mon 28 Apr, 2025
IPv4 BGP Table (R&E) as seen at GEANT.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/GEANT/
Analysis Summary
----------------
BGP routing table entries examined: 18994
Prefixes after maximum aggregation (per Origin AS): 10562
Deaggregation factor: 1.80
Unique aggregates announced (without unneeded subnets): 11642
Number of IPv4 prefixes with a valid ROA: 7527
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 11460
Total ASes present in the Internet Routing Table: 2773
Prefixes per ASN: 6.85
Origin-only ASes present in the Internet Routing Table: 2414
Origin ASes announcing only one prefix: 1068
Transit ASes present in the Internet Routing Table: 359
Transit-only ASes present in the Internet Routing Table: 58
Paths with bogon ASNs present in the IPv4 Routing Table: 1
Average AS path length visible in the Internet Routing Table: 3.8
Max AS path length visible: 19
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 35
Number of instances of unregistered ASNs: 35
Number of 32-bit ASNs allocated by the RIRs: 46291
Number of 32-bit ASNs visible in the Routing Table: 696
Prefixes from 32-bit ASNs in the Routing Table: 1865
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: 199736625
Equivalent to 11 /8s, 231 /16s and 189 /24s
Percentage of available address space announced: 5.4
Percentage of allocated address space announced: 5.4
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: 2344
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4864
Total APNIC prefixes after maximum aggregation: 2293
APNIC Deaggregation factor: 2.12
Prefixes being announced from the APNIC address blocks: 4863
Unique aggregates announced from the APNIC address blocks: 2607
APNIC Region origin ASes present in the Internet Routing Table: 591
APNIC Prefixes per ASN: 8.23
APNIC Region origin ASes announcing only one prefix: 245
APNIC Region transit ASes present in the Internet Routing Table: 50
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 240
Number of APNIC addresses announced to Internet: 45558848
Equivalent to 2 /8s, 183 /16s and 44 /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: 7959
Total ARIN prefixes after maximum aggregation: 4707
ARIN Deaggregation factor: 1.69
Prefixes being announced from the ARIN address blocks: 8007
Unique aggregates announced from the ARIN address blocks: 5208
ARIN Region origin ASes present in the Internet Routing Table: 1258
ARIN Prefixes per ASN: 6.36
ARIN Region origin ASes announcing only one prefix: 443
ARIN Region transit ASes present in the Internet Routing Table: 152
Average ARIN Region AS path length visible: 4.2
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 213
Number of ARIN addresses announced to Internet: 90624160
Equivalent to 5 /8s, 102 /16s and 208 /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: 3642
Total RIPE prefixes after maximum aggregation: 2889
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 3629
Unique aggregates announced from the RIPE address blocks: 2928
RIPE Region origin ASes present in the Internet Routing Table: 676
RIPE Prefixes per ASN: 5.37
RIPE Region origin ASes announcing only one prefix: 295
RIPE Region transit ASes present in the Internet Routing Table: 108
Average RIPE Region AS path length visible: 2.9
Max RIPE Region AS path length visible: 12
Number of RIPE region 32-bit ASNs visible in the Routing Table: 152
Number of RIPE addresses announced to Internet: 57053969
Equivalent to 3 /8s, 102 /16s and 147 /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: 1357
Total LACNIC prefixes after maximum aggregation: 493
LACNIC Deaggregation factor: 2.75
Prefixes being announced from the LACNIC address blocks: 1356
Unique aggregates announced from the LACNIC address blocks: 672
LACNIC Region origin ASes present in the Internet Routing Table: 135
LACNIC Prefixes per ASN: 10.04
LACNIC Region origin ASes announcing only one prefix: 57
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 4.6
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: 4019008
Equivalent to 0 /8s, 61 /16s and 83 /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: 1137
Total AfriNIC prefixes after maximum aggregation: 173
AfriNIC Deaggregation factor: 6.57
Prefixes being announced from the AfriNIC address blocks: 1136
Unique aggregates announced from the AfriNIC address blocks: 224
AfriNIC Region origin ASes present in the Internet Routing Table: 51
AfriNIC Prefixes per ASN: 22.27
AfriNIC Region origin ASes announcing only one prefix: 28
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2478080
Equivalent to 0 /8s, 37 /16s and 208 /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 454 180 24 CSTNET-AS-AP Computer Network Information
1237 196 74 145 KREONET-AS-KR KISTI, KR
4538 195 4192 71 ERX-CERNET-BKB China Education and Resear
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 174 282 117 AARNET-AS-AP Australian Academic and Rese
55824 146 19 20 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA
4621 59 35 8 UNINET-AS-AP UNINET-, TH
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 200 162 150 RISQ-AS, CA
668 199 646 170 DNIC-AS-00668, US
5786 199 16 1 UPRENET, PR
2920 169 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 99 7 17 OCDE, US
21976 88 34 14 NJEDGE-NET, US
237 85 542 51 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 285 1899 250 DFN Verein zur Foerderung eines Deutschen
786 195 1750 187 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 107 24 5 ISU Internet Services Unit ISU, SA
1103 96 1487 83 SURFNET-NL SURFnet, The Netherlands, NL
3267 92 30 74 NIKS, RU
2614 89 26 69 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
553 75 366 75 BELWUE BelWue-Koordination, DE
2200 63 614 58 FR-RENATER Reseau National de telecommuni
Complete listing at https://bgp.nsrc.org/REN/GEANT/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 159 10 71 Universidad Juarez Autonoma de Tabasco, M
11340 110 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 52 3 21 CEDIA, EC
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo a
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/GEANT/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 542 82 3 KENET-AS, KE
2018 373 318 69 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 34 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
37661 9 6 3 NRaE1-AS, NG
36982 8 33 8 UCT, ZA
Complete listing at https://bgp.nsrc.org/REN/GEANT/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 542 82 3 KENET-AS, KE
7497 454 180 24 CSTNET-AS-AP Computer Network Information
2018 373 318 69 TENET-1, ZA
1916 311 178 43 Rede Nacional de Ensino e Pesquisa, BR
680 285 1899 250 DFN Verein zur Foerderung eines Deutschen
376 200 162 150 RISQ-AS, CA
668 199 646 170 DNIC-AS-00668, US
5786 199 16 1 UPRENET, PR
1237 196 74 145 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 542 539 KENET-AS, KE
7497 454 430 CSTNET-AS-AP Computer Network Information Cente
2018 373 304 TENET-1, ZA
1916 311 268 Rede Nacional de Ensino e Pesquisa, BR
5786 199 198 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 169 162 LACOE, US
18558 139 135 NETBLK-RCOEK, US
55824 146 126 NKN-CORE-NW NKN Core Network, IN
4538 195 124 ERX-CERNET-BKB China Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
64500 DOCUMENT 62.40.99.56/29 20965 GEANT The GEANT IP Serv
36288 UNALLOCATED 64.79.154.0/24 293 ESNET, US
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
Complete listing at https://bgp.nsrc.org/REN/GEANT/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/GEANT/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
/13:19 /14:35 /15:115 /16:1987 /17:416 /18:461
/19:584 /20:847 /21:873 /22:1401 /23:1534 /24:10512
/25:48 /26:76 /27:34 /28:7 /29:16 /30:10
/31:1 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 518 542 KENET-AS, KE
8895 104 107 ISU Internet Services Unit ISU, SA
1916 75 311 Rede Nacional de Ensino e Pesquisa, BR
3267 43 92 NIKS, RU
23024 38 99 OCDE, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
32440 31 54 LONI, US
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:16 6:4 8:2 12:1 14:93
23:8 24:2 31:1 35:9 37:9 38:10
40:1 41:219 42:17 44:4 45:48 46:4
47:1 49:8 50:2 52:1 58:16 59:20
60:6 61:3 62:14 63:32 64:42 65:5
66:34 67:39 68:10 69:16 70:2 71:1
72:8 74:53 76:34 77:9 78:3 79:9
80:17 81:24 82:6 83:8 84:11 85:53
86:7 87:1 89:10 91:40 92:2 93:14
94:2 95:2 96:5 97:1 98:2 101:3
102:11 103:346 104:79 108:8 109:5 111:17
113:1 114:24 116:7 117:60 118:33 119:31
121:28 122:8 123:8 124:42 125:3 128:58
129:43 130:97 131:63 132:68 133:156 134:108
136:200 137:53 138:11 139:11 140:33 141:4
142:26 143:26 144:28 145:2 146:138 147:54
148:200 149:11 150:69 151:11 152:128 153:15
154:45 155:84 156:133 157:24 158:28 159:117
160:34 161:16 162:22 163:65 164:12 165:43
167:13 168:103 169:7 170:18 172:2 173:5
175:16 177:5 179:13 180:16 181:1 182:12
184:6 185:48 186:3 187:26 188:14 189:3
190:17 191:13 192:1377 193:312 194:135 195:112
196:147 197:330 198:445 199:276 200:295 201:37
202:634 203:432 204:372 205:133 206:212 207:220
208:64 209:115 210:226 211:4 212:139 213:7
214:8 216:91 217:21 218:22 219:7 220:16
222:4 223:5
End of report
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