[REN-BGP-stats-all] IPv4 R&E Routing Table Report - MARWAN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Tue Jul 22 18:00:36 UTC 2025
IPv4 R&E Routing Table Report 18:00 GMT Tue 22 Jul, 2025
IPv4 BGP Table (R&E) as seen at MARWAN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/MARWAN/
Analysis Summary
----------------
BGP routing table entries examined: 17574
Prefixes after maximum aggregation (per Origin AS): 9559
Deaggregation factor: 1.84
Unique aggregates announced (without unneeded subnets): 10451
Number of IPv4 prefixes with a valid ROA: 7225
Number of IPv4 prefixes with an invalid ROA: 94
Number of IPv4 prefixes with no ROA: 10255
Total ASes present in the Internet Routing Table: 2593
Prefixes per ASN: 6.78
Origin-only ASes present in the Internet Routing Table: 2250
Origin ASes announcing only one prefix: 1017
Transit ASes present in the Internet Routing Table: 343
Transit-only ASes present in the Internet Routing Table: 61
Paths with bogon ASNs present in the IPv4 Routing Table: 1
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 16
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 34
Number of instances of unregistered ASNs: 34
Number of 32-bit ASNs allocated by the RIRs: 46908
Number of 32-bit ASNs visible in the Routing Table: 672
Prefixes from 32-bit ASNs in the Routing Table: 1804
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 4
Number of addresses announced to Internet: 185484210
Equivalent to 11 /8s, 14 /16s and 67 /24s
Percentage of available address space announced: 5.0
Percentage of allocated address space announced: 5.0
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: 2757
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4048
Total APNIC prefixes after maximum aggregation: 1894
APNIC Deaggregation factor: 2.14
Prefixes being announced from the APNIC address blocks: 4047
Unique aggregates announced from the APNIC address blocks: 2094
APNIC Region origin ASes present in the Internet Routing Table: 529
APNIC Prefixes per ASN: 7.65
APNIC Region origin ASes announcing only one prefix: 234
APNIC Region transit ASes present in the Internet Routing Table: 47
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 231
Number of APNIC addresses announced to Internet: 37797441
Equivalent to 2 /8s, 64 /16s and 190 /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: 7520
Total ARIN prefixes after maximum aggregation: 4440
ARIN Deaggregation factor: 1.69
Prefixes being announced from the ARIN address blocks: 7569
Unique aggregates announced from the ARIN address blocks: 4939
ARIN Region origin ASes present in the Internet Routing Table: 1237
ARIN Prefixes per ASN: 6.12
ARIN Region origin ASes announcing only one prefix: 435
ARIN Region transit ASes present in the Internet Routing Table: 150
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 211
Number of ARIN addresses announced to Internet: 86515616
Equivalent to 5 /8s, 40 /16s and 31 /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: 3224
Total RIPE prefixes after maximum aggregation: 2661
RIPE Deaggregation factor: 1.21
Prefixes being announced from the RIPE address blocks: 3209
Unique aggregates announced from the RIPE address blocks: 2671
RIPE Region origin ASes present in the Internet Routing Table: 588
RIPE Prefixes per ASN: 5.46
RIPE Region origin ASes announcing only one prefix: 268
RIPE Region transit ASes present in the Internet Routing Table: 96
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 141
Number of RIPE addresses announced to Internet: 56462224
Equivalent to 3 /8s, 93 /16s and 139 /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: 1353
Total LACNIC prefixes after maximum aggregation: 490
LACNIC Deaggregation factor: 2.76
Prefixes being announced from the LACNIC address blocks: 1352
Unique aggregates announced from the LACNIC address blocks: 654
LACNIC Region origin ASes present in the Internet Routing Table: 131
LACNIC Prefixes per ASN: 10.32
LACNIC Region origin ASes announcing only one prefix: 54
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 5.6
Max LACNIC Region AS path length visible: 15
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 61
Number of LACNIC addresses announced to Internet: 4004928
Equivalent to 0 /8s, 61 /16s and 28 /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: 1395
Total AfriNIC prefixes after maximum aggregation: 68
AfriNIC Deaggregation factor: 20.51
Prefixes being announced from the AfriNIC address blocks: 1392
Unique aggregates announced from the AfriNIC address blocks: 89
AfriNIC Region origin ASes present in the Internet Routing Table: 44
AfriNIC Prefixes per ASN: 31.64
AfriNIC Region origin ASes announcing only one prefix: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 9
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28
Number of AfriNIC addresses announced to Internet: 701440
Equivalent to 0 /8s, 10 /16s and 180 /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 613 2169 463 SINET-AS Research Organization of Informa
7497 453 180 23 CSTNET-AS-AP Computer Network Information
4538 197 4192 71 ERX-CERNET-BKB China Education and Resear
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 171 281 116 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
6262 63 134 56 CSIRO Commonwealth Scientific and Industr
4621 59 35 8 UNINET-AS-AP UNINET-, TH
2697 56 4 33 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/MARWAN/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
2920 179 34 7 LACOE, US
2152 146 491 96 CENIC-2152, US
5786 141 16 1 UPRENET, PR
18558 139 18 4 NETBLK-RCOEK, US
81 127 471 35 NCREN, US
23024 99 7 17 OCDE, US
21976 88 34 14 NJEDGE-NET, US
237 85 543 51 MERIT-AS-14, US
1736 78 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/MARWAN/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
786 193 1742 187 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 97 1503 84 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
2200 63 614 58 FR-RENATER Reseau National de telecommuni
200521 59 4 24 SEAP-AGE, ES
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 327 177 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 47 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/MARWAN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
30983 671 4 5 MARWAN-AS, MA
36914 580 82 3 KENET-AS, KE
37215 37 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
327947 7 4 1 KNUST-, GH
327798 4 0 3 BERNET, BI
328903 4 0 1 RITER, CI
37661 3 6 3 NRaE1-AS, NG
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
30983 671 4 5 MARWAN-AS, MA
2907 613 2169 463 SINET-AS Research Organization of Informa
36914 580 82 3 KENET-AS, KE
7497 453 180 23 CSTNET-AS-AP Computer Network Information
1916 327 177 43 Rede Nacional de Ensino e Pesquisa, BR
680 284 1899 250 DFN Verein zur Foerderung eines Deutschen
376 201 162 151 RISQ-AS, CA
4538 197 4192 71 ERX-CERNET-BKB China Education and Resear
786 193 1742 187 JANET Jisc Services Limited, GB
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 580 577 KENET-AS, KE
7497 453 430 CSTNET-AS-AP Computer Network Information Cente
1916 327 284 Rede Nacional de Ensino e Pesquisa, BR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 179 172 LACOE, US
2907 613 150 SINET-AS Research Organization of Information a
5786 141 140 UPRENET, PR
18558 139 135 NETBLK-RCOEK, US
55824 148 127 NKN-CORE-NW NKN Core Network, IN
4538 197 126 ERX-CERNET-BKB China Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
65000 PRIVATE 102.216.118.0/24 30983 MARWAN-AS, MA
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
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.168.167.1/32 30983 MARWAN-AS, MA
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-spar
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
192.168.167.1/32 Origin: 30983 MARWAN-AS, MA
192.168.167.1/32 Transit: 0 UNALLOCATED
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/MARWAN/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
!!Default route being announced!!
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:1 /11:0 /12:9
/13:16 /14:34 /15:109 /16:1870 /17:372 /18:439
/19:538 /20:772 /21:746 /22:1197 /23:1340 /24:9305
/25:55 /26:81 /27:49 /28:15 /29:66 /30:5
/31:2 /32:551
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
30983 645 671 MARWAN-AS, MA
36914 556 580 KENET-AS, KE
1916 87 327 Rede Nacional de Ensino e Pesquisa, BR
23024 38 99 OCDE, US
200521 34 59 SEAP-AGE, ES
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
37215 31 37 MAREN, MW
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 5:16 8:2 12:1 14:93 23:9
24:2 31:1 35:4 37:14 38:10 40:1
41:227 42:17 44:5 45:41 46:5 47:1
49:12 50:2 52:1 58:16 59:18 60:6
61:3 62:5 63:32 64:43 65:5 66:34
67:40 68:12 69:17 70:2 71:1 72:8
74:53 76:15 77:6 78:3 79:9 80:9
81:27 82:3 83:7 84:7 85:31 87:1
89:10 91:35 93:15 94:2 95:2 96:5
97:1 98:2 101:3 102:10 103:340 104:72
108:8 109:5 110:1 111:17 114:3 116:7
118:33 119:31 121:28 122:8 123:8 124:42
125:3 128:59 129:43 130:96 131:63 132:68
133:156 134:80 136:142 137:52 138:11 139:5
140:30 141:4 142:26 143:20 144:25 145:4
146:126 147:47 148:200 149:10 150:30 151:10
152:118 153:15 154:14 155:47 156:134 157:23
158:25 159:117 160:34 161:17 162:22 163:73
164:10 165:5 167:12 168:51 169:7 170:18
172:1 173:6 175:11 177:5 179:13 180:16
181:1 182:11 184:6 185:38 186:3 187:25
188:14 190:17 191:13 192:1363 193:260 194:109
195:76 196:27 197:361 198:403 199:244 200:303
201:22 202:609 203:324 204:364 205:123 206:200
207:217 208:61 209:119 210:119 211:3 212:44
213:4 216:92 217:22 218:20 219:7 220:3
222:3 223:5
End of report
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